WO2011136251A1 - 天体自動追尾撮影方法及びカメラ - Google Patents
天体自動追尾撮影方法及びカメラ Download PDFInfo
- Publication number
- WO2011136251A1 WO2011136251A1 PCT/JP2011/060219 JP2011060219W WO2011136251A1 WO 2011136251 A1 WO2011136251 A1 WO 2011136251A1 JP 2011060219 W JP2011060219 W JP 2011060219W WO 2011136251 A1 WO2011136251 A1 WO 2011136251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- imaging
- celestial
- image
- optical system
- photographing
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/16—Special procedures for taking photographs; Apparatus therefor for photographing the track of moving objects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/61—Control of cameras or camera modules based on recognised objects
Definitions
- the present invention relates to an astronomical automatic tracking shooting method and a camera that enable still shooting of a celestial body.
- An equatorial mount equipped with an automatic tracking device is generally used to take a picture of a celestial body in a stationary state (light spot shape) with long exposure.
- Patent Documents 1 and 2 a method has been proposed in which a fixed digital camera is used for shooting multiple times without using an equator, and the image is added multiple times while correcting the position of the celestial body using the captured image data after shooting.
- Patent Documents 1 and 2 With digital cameras that synthesize a plurality of images (Patent Documents 1 and 2), it is practically impossible to perform image synthesis with a single digital camera, such as image alignment accuracy and slow image addition processing.
- the present invention provides an astronomical automatic tracking imaging method and a camera that can shoot each celestial object in an apparently stationary state only by shooting the camera in a fixed state with respect to the ground without using an equatorial mount.
- the purpose is to obtain.
- a celestial image formed on the imaging surface by the imaging optical system of the imaging device is being captured in order to capture a celestial body that moves relative to the imaging device by diurnal motion
- An astronomical auto-tracking imaging method in which at least one of the predetermined imaging area and the celestial image is moved relative to an imaging device so as to be fixed with respect to a predetermined imaging area of the imaging device.
- the step of inputting the latitude information of the point, the shooting azimuth angle information, the shooting elevation angle information, the posture information of the shooting device, and the focal length information of the shooting optical system, and using all the input information, the astronomical image of the image sensor A step of calculating a relative movement amount with respect to the photographing apparatus for fixing to a predetermined imaging region, and taking a picture by moving at least one of the predetermined imaging region and the astronomical image based on the calculated relative movement amount. It is characterized by having the steps of, a.
- the imaging element is translated in a direction perpendicular to the optical axis of the imaging optical system and parallel to the optical axis. Shoot while rotating around a specific axis, and shoot astronomical objects.
- the predetermined imaging area is a trimming area obtained by electronically trimming a part of the entire imaging area of the imaging element, and is based on the calculated relative movement amount. Then, the trimming area is photographed while being translated in a direction orthogonal to the optical axis of the photographing optical system and rotated around an axis parallel to the optical axis, and a celestial body is photographed as a point.
- the predetermined imaging area is a trimming area obtained by electronically trimming a part of the entire imaging area of the imaging device, and the calculated relative movement amount Based on this, a part of the photographing optical system is decentered to move the astronomical image with respect to the photographing apparatus, and the trimming region is photographed while being rotated around an axis parallel to the optical axis of the photographing optical system.
- the “optical axis of the photographing optical system” here means the optical axis of the photographing optical system in the initial state before the eccentricity adjustment.
- the predetermined imaging area is a trimming area obtained by electronically trimming a part of the entire imaging area of the imaging device, and the calculated relative movement amount Based on the above, the image pickup device is translated in a direction perpendicular to the optical axis of the photographing optical system, and the trimming region is photographed while being rotated around an axis parallel to the optical axis of the photographing optical system, Take a picture of a celestial body as a point.
- the relative movement amount can be calculated from all the input information and a spherical triangle connecting the zenith, the celestial pole, and the celestial body at the center of the photographing screen on the celestial sphere.
- the input latitude is ⁇
- the azimuth angle is A
- the elevation angle is h
- the imaging apparatus is rotated from the horizontal around the optical axis as the attitude information of the imaging apparatus.
- the step of calculating the angle ⁇ formed by the horizontal and the celestial equator by the following equation (14), the long side direction of the rectangular image sensor at a predetermined time t, and relative displacement ⁇ x of celestial object image with respect to the short side direction can include the steps of calculating by (IV).
- the celestial automatic tracking photographing camera of the present invention has a calculation means for calculating the relative movement amount in order to execute any one of the celestial automatic tracking photographing methods described above.
- the astronomical automatic tracking imaging camera of the present invention is configured to translate the imaging element in a direction orthogonal to the optical axis of the imaging optical system based on the relative movement amount calculated by the computing means. It has moving means for rotating around an axis parallel to the optical axis.
- the astronomical auto-tracking camera of the present invention electronically trims a part of the entire imaging area of the imaging element to form a trimming area, and based on the relative movement amount calculated by the computing means , And a moving means for moving the trimming region in a direction perpendicular to the optical axis of the photographing optical system and rotating around an axis parallel to the optical axis.
- the astronomical automatic tracking imaging camera of the present invention electronically trims a part of the entire imaging region of the imaging device to form a trimming region, and is based on the relative movement amount calculated by the computing unit. And moving the celestial image with respect to the photographing device by decentering a part of the photographing optical system and rotating the trimming region about an axis parallel to the optical axis of the photographing optical system.
- the “optical axis of the photographing optical system” here means the optical axis of the photographing optical system in the initial state before the eccentricity adjustment.
- the astronomical automatic tracking imaging camera of the present invention electronically trims a part of the entire imaging region of the imaging device to form a trimming region, and is based on the relative movement amount calculated by the computing unit.
- the image pickup device is moved in parallel in a direction orthogonal to the optical axis of the photographing optical system, and the trimming region is moved to rotate about an axis parallel to the optical axis of the photographing optical system.
- the arithmetic means can calculate the relative movement amount from the input information and a spherical triangle connecting the zenith, the celestial pole, and the celestial body at the center of the photographing screen on the celestial sphere.
- the calculation means is configured such that the input latitude is ⁇ , the azimuth angle is A, the elevation angle is h, the rotation angle from the horizontal around the optical axis of the photographing optical system is taken as the posture information of the photographing device, and photographing is performed.
- the focal length of the optical system is f
- the angle ⁇ formed by the horizontal and the celestial equator is calculated by the following equation (14)
- the astronomical image of the rectangular image sensor at the predetermined time t with respect to the long side direction and the short side direction is calculated.
- the relative movement amounts ⁇ x and ⁇ y can be calculated by the following formulas (III) and (IV).
- the camera is pointed at any celestial body and is captured in a fixed state with respect to the ground. You can shoot.
- FIG. 1 It is a block diagram which shows embodiment of the main structural member of the digital camera which has the automatic celestial body tracking imaging
- FIG. 1 shows embodiment of the main structural member of the digital camera which has the automatic celestial body tracking imaging
- the imaging sensor 13 is mounted on the movable stage. Is retained.
- the imaging sensor 13 (movable stage) is controlled to translate in a desired direction orthogonal to the optical axis LO at a desired movement speed, and further, is positioned somewhere in a plane parallel to the optical axis LO (perpendicular to the optical axis).
- the rotation is controlled at a desired rotation speed with the center of the instantaneous moment).
- Such an image sensor driving unit 15 is known as an image stabilization unit of an image blur correction device for a camera described in Patent Document 3, for example.
- the camera body 11 is equipped with a CPU 21 that controls the functions of the entire camera.
- the CPU 21 controls the drive of the image sensor 13, processes the image signal captured by the image sensor 13, displays it on the LCD monitor 23, and writes it in the memory card 25.
- the CPU 21 receives signals detected by the X-direction gyro sensor GSX, the Y-direction gyro sensor GSY, and the rotation detection gyro sensor GSR in order to detect shake applied to the camera when the image sensor driving unit 15 is used as an image stabilization unit. Entered.
- the camera body 11 includes a power switch 27, a release switch 28, and a setting switch 30 as switches.
- the CPU 21 executes control according to the on / off states of these switches 27, 28 and 30. For example, in response to the operation of the power switch 27, the power supply from a battery (not shown) is turned on / off, and in response to the operation of the release switch 28, focus adjustment processing, photometry processing, and imaging processing (astrophotography) are executed.
- the setting switch 30 is a switch for selecting and setting a shooting mode such as an astronomical tracking shooting mode or a normal shooting mode.
- a GPS unit 31 as latitude information input means, an azimuth angle sensor 33 as azimuth angle information input means, and a gravity sensor 35 as photographing elevation angle information input means are incorporated.
- the CPU 21 receives latitude information ⁇ from the GPS unit 31, shooting azimuth angle information A from the azimuth angle sensor 33, and shooting elevation angle information h from the gravity sensor 35.
- the gravity sensor 35 has a level function, and gives the posture information of the camera body 11 shown in FIG. 11 to the CPU 21 (the gravity sensor 35 functions as a camera posture information input unit).
- the camera posture information is rotation angle information ⁇ about the photographing optical axis LO from the reference position of the camera body 11 (image sensor 13).
- the reference position of the camera body 11 (image sensor 13) is, for example, a position where the long side direction of the rectangular image sensor is the horizontal direction X, and the angle ⁇ formed with the long side direction X ′ after rotation is the rotation angle. Information.
- the GPS unit 31, the azimuth angle sensor 33, and the gravity sensor 35 described above may be incorporated in the camera body 11, or any or all of them may be externally attached to the camera body.
- these sensors can be mounted on an accessory shoe or a bracket attached to the bottom plate, and input to the CPU 21 via a contact of the accessory shoe or a connector such as a USB.
- the date and time can use the built-in clock of the digital camera 10, and the latitude information ⁇ may be manually input to the CPU 21 by the user using the setting switch 30.
- the CPU 21 captures latitude information ⁇ input from the GPS unit 31, shooting azimuth angle information A input from the azimuth angle sensor 33, shooting elevation angle information h input from the gravity sensor 35, and rotation angle information (camera posture) when shooting astronomical tracking. Information) Based on ⁇ and the focal length information f input from the above-described focal length detection device 105, the imaging sensor driving unit 15 is driven and controlled, and the imaging sensor 13 is translated and rotated.
- the radius of the celestial sphere that should actually be infinite is set to a finite r as shown in FIG.
- ⁇ be the angle (the angle formed between the polar direction of the sky and the optical axis of the imaging optical system).
- the orbit drawn by the celestial body is a circular orbit as shown in Fig. 4, the composition of the circular orbit viewed from directly below (a1), the composition viewed from diagonally (a2), (a3), and the composition viewed from the side.
- the images shown in (a1) to (a4) of FIG. 5 are obtained, and the result is that the trajectories are different.
- the celestial body appears to move in a circular orbit, but when actually shooting with a camera, the shooting elevation angle h of the camera affects the imaging state.
- the digital camera 10 is directed toward the celestial body, and the trajectory when the celestial body (Earth) is rotated by ⁇ ° indicates the X direction (the direction of the celestial sphere) and the Y direction ( A description will be made by dividing the celestial sphere in the meridian direction.
- the amount of movement y in the Y direction varies depending on the direction in which the circular orbit is viewed.
- the movement amounts ⁇ x and ⁇ y on the imaging surface 14 are obtained with respect to the direction in which the X direction and Y direction of the celestial sphere are projected on the imaging surface 14.
- ⁇ x and ⁇ y That is, the amount of movement of the image sensor 13 in the plane orthogonal to the optical axis varies depending on the focal length f of the photographic lens 101 attached to the digital camera 10.
- the image sensor 13 determines how much the image sensor 13 should be rotated around the center of the image sensor at the time of shooting.
- the orbit of the celestial body appears as a circle or an elliptical orbit.
- the point F is captured at the center of the imaging sensor (center C of the imaging surface 14) and is tracked for the movement F ⁇ F ′.
- the image sensor center C may be moved by ⁇ x, ⁇ y.
- the point J moves from J to J '.
- the image sensor 13 may be rotated around the image sensor center C.
- the rotation angle is the inclination angle of the tangent line L of the ellipse at the point F ′ (the angle formed by the tangent line of the ellipse at the point F and the tangent line of the ellipse at the point F ′) ⁇ .
- the long side direction of the image sensor 13 is defined as the X axis
- the short side direction orthogonal to the X axis is defined as the Y axis.
- each symbol is defined as follows.
- P Heavenly pole Z: Zenith N: True north
- S Target celestial body (shooting target point) (For convenience of explanation, this target celestial body (constant star) is the center of the shooting screen 14 and is located on the extended line of the optical axis LO of the shooting lens 101. However, shooting is performed.
- ⁇ Latitude of the shooting location
- A Shooting azimuth (azimuth of the celestial body S aimed by the photographic lens 101 or azimuth of the intersection of the optical axis LO of the photographic lens 101 and the celestial sphere)
- h Elevation angle (the altitude of the celestial body S aimed by the photographic lens 10 or the altitude of the intersection of the optical axis LO of the photographic lens 101 and the celestial sphere)
- ⁇ Declination of the target celestial body S
- ⁇ Angle formed by the shortest curve connecting the celestial pole P and the target celestial body S on the celestial sphere and the curve connecting the zenith Z and the target celestial body (stellar) S .
- ⁇ in the equations (8) to (11) is replaced with ⁇ POS, the X-direction movement amount x and the Y-direction movement amount y of the celestial body at an arbitrary latitude ⁇ can be obtained.
- the camera posture is a rotation angle around the photographing lens optical axis LO of the digital camera 10, and the camera posture when the longitudinal direction of the imaging surface 14 is horizontal is horizontal.
- ⁇ arctan [cos ( ⁇ ) ⁇ sin (A) / (sin ( ⁇ ) ⁇ cos (h)-cos ( ⁇ ) ⁇ sin (h) ⁇ cos (A))] (14) It becomes.
- the moving amounts x and y of the celestial body are converted into the horizontal moving amount ⁇ x and the vertical moving amount ⁇ y in the coordinates on the imaging surface (the vertical and horizontal coordinates of the camera (imaging device)).
- the following formulas (I) and (II) are used.
- ⁇ x x ⁇ cos ( ⁇ ) + y ⁇ sin ( ⁇ ) (I)
- ⁇ y x ⁇ sin ( ⁇ ) + y ⁇ cos ( ⁇ ) (II)
- the rotation angle ⁇ , the lateral movement amount ⁇ x, and the vertical movement amount ⁇ y of the imaging sensor 13 described above are calculated as follows.
- the composition of the digital camera 10 is determined and fixed so that the target celestial body is projected onto the imaging surface 14.
- the latitude information ⁇ of the shooting point is input from the GPS unit 31 to the CPU 21
- the shooting azimuth angle information A of the digital camera 10 is input from the azimuth sensor 33
- the shooting elevation angle information is input from the gravity sensor 35.
- h and rotation angle information (camera posture information) ⁇ are input.
- the CPU 21 obtains the positions of the zenith point Z, the celestial pole point P, and the celestial body point S at the center of the photographing screen from these input information, as shown in FIGS.
- the CPU 21 rotates the imaging sensor 13 from the focal length information f and the rotation angle information (camera posture information) ⁇ of the photographing lens 101 input from the focal length detection device 105.
- the angle ⁇ , the horizontal movement amount ⁇ x, and the vertical movement amount ⁇ y are calculated.
- the CPU 21 performs parallel movement control and rotational movement control of the image sensor 13 in accordance with the movement locus based on the calculated rotation angle ⁇ , lateral movement amount ⁇ x, and vertical movement amount ⁇ y (at this time, the orientation of the digital camera 10 is By performing exposure (which is fixed), tracking shooting of astronomical objects becomes possible.
- the above-described mechanism is mechanically described above.
- the camera body 11 can be realized by moving only the image sensor 13 in a predetermined direction along a predetermined locus while the camera body 11 remains fixed on the ground.
- the movable range of the image sensor 13 by the image sensor drive unit 15 has a mechanical limit.
- This mechanical limit limits the exposure time.
- the mechanical limits if the X direction is Lx, the Y direction is Ly, and the rotation mechanical limit is L ⁇ , the time Tlimit to reach each limit is ⁇ in the formulas (12), (III), and (IV).
- the time Tlimit for ⁇ x, ⁇ y, and ⁇ obtained at that time is defined as Tlimit ( ⁇ x), Tlimit ( ⁇ y), and Tlimit ( ⁇ ), respectively.
- the minimum value among the above three times Tlimit ( ⁇ x), Tlimit ( ⁇ y), and Tlimit ( ⁇ ) is defined as the longest exposure time Tlimit limited by the mechanical limit.
- the imaging sensor 13 captures the target celestial body (star) S (FIGS. 9 and 10).
- the celestial body tracking shooting of this embodiment is performed (S105: YES, 107: YES, S109).
- an exposure time T for an arbitrary long second is set for the camera by the photographer.
- the digital camera 10 is equipped with an AF device and an AF-capable shooting lens 101, the focus is fixed at infinity (or at infinity for the photographer) when the astronomical tracking shooting mode is set. It is preferable to perform an operation that prompts the user to set the focus state. It is preferable to execute the infinity focusing process at least before the celestial body tracking imaging process.
- the imaging sensor driving unit 15 is initialized, and the imaging sensor 13 is held in a state where the center C of the imaging surface 14 coincides with the optical axis LO (S201). ).
- the CPU 21 inputs latitude information ⁇ from the GPS unit 31, inputs shooting azimuth angle information A from the azimuth sensor 33, and shooting elevation angle information h and rotation angle information (camera posture information) from the gravity sensor 35.
- ⁇ is input
- focal length information f is input from the focal length detection device 105 (S203).
- the CPU 21 inputs the latitude information ⁇ , the shooting azimuth angle information A, the shooting elevation angle information h, the rotation angle information (camera posture information) ⁇ , and the focal length information f, and the movable range of the image sensor 13 by the image sensor driving unit 15.
- the longest exposure time (exposure limit time) Tlimit is calculated from the mechanical limit (S205).
- the CPU 21 determines whether or not the arbitrary exposure time T set by the photographer is within the longest exposure time Tlimit (S207).
- the CPU 21 sets the exposure time T as the exposure time during astronomical tracking shooting (S207: YES).
- the CPU 21 sets the longest exposure time Tlimit as the exposure time during astronomical tracking shooting (S209).
- the CPU 21 opens the shutter (not shown) for the set exposure time and starts imaging by the imaging sensor 13 (S211). Note that the aperture is usually shot in the open state, but can be arbitrarily set by the photographer.
- the CPU 21 receives the latitude information ⁇ of the shooting point input from the GPS unit 31, the shooting azimuth angle information A of the digital camera 10 input from the azimuth angle sensor 33, the shooting elevation angle information h and the rotation angle information (camera posture) input from the gravity sensor 35.
- Information) From ⁇ the positions of the zenith point Z, the celestial pole point P, and the celestial body point S at the center of the imaging screen are obtained (FIGS. 9 and 10).
- the CPU 21 calculates the rotation angle ⁇ of the image sensor 13 from the obtained three points Z, P, S and the focal length information f and rotation angle information (camera posture information) ⁇ of the photographing lens 101 input from the focal length detection device 105.
- the horizontal movement amount ⁇ x and the vertical movement amount ⁇ y are calculated (S213).
- the CPU 21 performs parallel movement control and rotation of the image sensor 13 in accordance with the movement trajectory based on the calculated rotation angle ⁇ , horizontal movement amount ⁇ x, and vertical movement amount ⁇ y. Exposure is performed while controlling the movement (S215, S217: NO). As a result, each celestial object can be photographed in an apparently stationary state only by photographing with the digital camera 10 fixed.
- the CPU 21 sets the rotation angle ⁇ , the horizontal movement amount ⁇ x, and the vertical movement amount ⁇ y of the image sensor 13 a plurality of times according to the elapsed time from the start of exposure within the set exposure time. Calculate and update.
- movement period (frequency) of the CPU 21, and the amount of free memory movement data within the total exposure time is already calculated and stored at the start of exposure, and each time of movement according to the elapsed time from the start of exposure. It is also possible to read the movement data from the memory and control the movement of the image sensor 13. This eliminates the need to calculate and update the rotation angle ⁇ , the lateral movement amount ⁇ x, and the vertical movement amount ⁇ y of the image sensor 13 during the exposure time.
- the CPU 21 closes the shutter (not shown) and ends the exposure (S219).
- the CPU 21 reads captured image data from the image sensor 13 (S221), and performs image processing such as white balance adjustment and change to a predetermined format (S223).
- the CPU 21 displays the photographed image data after the image processing on the LCD monitor 23 and stores it in the memory card 25 as an image file of a predetermined format (S225).
- the relative movement amount (rotation angle ⁇ , horizontal movement amount ⁇ x, vertical movement amount ⁇ y) of the celestial image with respect to 10 is calculated, and the calculated relative movement amounts (rotation angle ⁇ , horizontal movement amount ⁇ x, vertical movement amount ⁇ y) are calculated.
- the process (S213) for calculating the direction movement amount ⁇ y may be executed before the start of exposure (before S211) to calculate drive data for the longest exposure time Tlimit in advance.
- the drive data may be stored in the camera built-in memory, and the image sensor 13 may be moved and controlled via the image sensor drive unit 15 by sequentially reading the data from the camera built-in memory during exposure.
- the image sensor 13 is physically translated and rotated by the drive control of the image sensor driving unit 15 by the CPU 21.
- the predetermined imaging area of the imaging sensor 13 is a trimming area obtained by electronically trimming a part of the entire imaging area of the imaging sensor 13 (the entire area of the imaging surface 14), and the calculated relative movement amount (rotation angle ⁇ , Based on the horizontal movement amount ⁇ x and the vertical movement amount ⁇ y), the trimming area is translated in a direction perpendicular to the optical axis LO of the photographing optical system 101 and rotated around an axis parallel to the optical axis LO. It is also possible to take a picture with the celestial body as a point. In this aspect, in FIG.
- the CPU 21 sends a trimming instruction signal to the image sensor 13 at a predetermined drive cycle, so that the trimming area of the image sensor 13 is orthogonal to the optical axis LO of the imaging optical system 101. It is possible to take a picture while translating in the direction and rotating around an axis parallel to the optical axis LO.
- the digital camera 10 described above includes the image sensor driving unit 15 that rotates the image sensor 13 in a direction orthogonal to the optical axis and around an axis parallel to the optical axis. However, the image sensor driving unit 15 is omitted and imaging is performed.
- a combination of an image blur correction device in which an image blur correction lens (anti-vibration lens) 102 that moves a subject position on the image sensor 13 in the lens 101 and an image sensor rotation mechanism that rotates the image sensor is combined or trimmed.
- the digital camera of the present invention can be configured even in combination with a mode in which the region is rotated.
- FIG. 14 shows the embodiment.
- the lens CPU 103 causes the image blur correction lens 102 to be orthogonal to the optical axis via the image stabilization drive unit 104.
- the CPU 21 sends a rotation instruction signal to the image sensor 13 at a predetermined drive cycle, thereby rotating the image sensor about an axis parallel to the optical axis LO.
- the CPU 21 sends a trimming instruction signal to the image sensor 13 at a predetermined drive cycle, thereby rotating the trimming area of the image sensor 13 about an axis parallel to the optical axis LO of the photographing optical system 101.
- a digital camera is shown as a camera.
- the present invention is not limited to a lens interchangeable single-lens reflex digital camera or a lens shutter compact digital camera, and the imaging unit (imaging device) is in a plane orthogonal to the optical axis.
- the present invention can be applied to an imaging apparatus that can be moved and rotated in an arbitrary direction orthogonal to the optical axis.
- the celestial automatic tracking photographing method and the camera according to the present invention are suitable for photographing a celestial body that moves relative to the photographing apparatus by diurnal motion.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
Abstract
Description
γ = arctan[cos(ε) × sin(A)/(sin(ε) × cos(h) - cos(ε) × sin(h) × cos(A))] ・・・(14)
Δx = x × cos(γ + ξ) + y × sin(γ + ξ) ・・・(III)
Δy = x × sin(γ + ξ) + y × cos(γ + ξ) ・・・(IV)
但し、
Δx = f × sinθ × sinφ ・・・(10)
Δy = f × sinθ × cosθ(1 - cosφ) ・・・(11)
θ:天の極方向と撮影光学系光軸との成す角、
φ:所定時間tにおける地球の自転角、
である。
γ = arctan[cos(ε) × sin(A)/(sin(ε) × cos(h) - cos(ε) × sin(h) × cos(A))] ・・・(14)
Δx = x × cos(γ + ξ) + y × sin(γ + ξ) ・・・(III)
Δy = x × sin(γ + ξ) + y × cos(γ + ξ) ・・・(IV)
但し、
Δx = f × sinθ × sinφ ・・・(10)
Δy = f × sinθ × cosθ(1 - cosφ) ・・・(11)
θ:天の極方向と撮影光学系光軸との成す角、
φ:所定時間tにおける地球の自転角、
である。
「北極点(緯度90゜)から撮影する場合」
地球上の北極点(緯度90゜)から撮影する場合とは、地軸(自転軸)の延長上に位置する北極星(天の極)が天頂と一致している状態(図2)での撮影である。
R = r × sinθ ・・・(1)
で与えられる。
φ = 0.004167 × t [deg] ・・・(2)
が成立する。
Xr = R = r × sinθ ・・・(3)
Yr = R × cosθ= r × sinθ × cosθ ・・・(4)
として求めることができる。
x = R × sinφ ・・・(5)
となる。Y方向の移動量yは円軌道を見ている方向により異なる。
Ymax = R - R × cosφ ・・・(6)
となる。よって移動量yは、
y = Ymax × cosθ = (R - R × cosφ) × cosθ ・・・(7)
となる。(5)、(7)式中のRに(1)式を代入すると、移動量x、移動量yは、
x = r × sinθ × sinφ ・・・(8)
y = r × sinθ × cosθ(1 - cosφ) ・・・(9)
となる。
Δx = f × sinθ × sinφ ・・・(10)
Δy = f × sinθ × cosθ(1 - cosφ) ・・・(11)
により、移動量ΔxとΔyを演算する。
つまり、撮像センサ13の光軸直交面内での移動量は、デジタルカメラ10に装着された撮影レンズ101の焦点距離fによって変化する。
x0 × x/a2 + y0 × y/b2 = 1
となる。図8において、点a、点bは、式(3)と(4)で示した楕円の長軸側の半径Xr、短軸側の半径Yrに相当する。
Y = -(b2 × x0)/(a2 × y0) × x - 1/(a2 × y0)
となる。この楕円の接線LとX軸の成す角度が、画像中心を回転中心とする画像の回転角αである。
-(b2 × x0)/(a2 × y0)
となるため、求める回転角αは、
α = arctan( -(b2 × x0)/(a2 × y0)) ・・・(12)
となる。
以上は、撮影地点の緯度が90°(つまり北極星(天の極)が真上にある場合)の説明である。次に、撮影地点の緯度が90°以外の場合について、さらに図9及び図10を参照して説明する。
P:天の極
Z:天頂
N:真北
S:対象天体(撮影目標点)(説明の便宜上、この対象天体(恒星)は撮影画面14の中心であり、撮影レンズ101の光軸LOの延長線上に位置するものとする。但し、撮影するにあたり光軸をどれかの天体に一致させる必要が無いことは言うまでも無い)
ε:撮影地点の緯度
A:撮影方位角(撮影レンズ101が狙う天体Sの方位、又は撮影レンズ101の光軸LOと天球との交点の方位角)
h:撮影仰角(撮影レンズ10が狙う天体Sの高度、又は撮影レンズ101の光軸LOと天球との交点の高度)
H:対象天体Sの時角(通常、時角の単位は時間が使われるが、ここでは角度(1時間=15度)に換算して扱うこととする。)
δ:対象天体Sの赤緯
γ:天球面上において、天の極Pと対象天体Sとを最短で結ぶ曲線と、天頂Zと対象天体(恒星)Sとを最短で結ぶ曲線とがなす角。
cos(∠POS) = cos(90 - ε) × cos(90 - h) + sin(90 - ε) × sin(90 - h)×cos(A)
= sin(ε) × sin(h) + cos(ε) × cos(h) × cos(A)
となるので、
∠POS = arccos[sin(ε) × sin(h) + cos(ε) × cos(h) × cos(A)] ・・・(13)
となる。
ここで、式(8)乃至(11)のθを∠POSで置き換えると、任意の緯度εにおける天体のX方向移動量x、Y方向移動量yを求めることができる。
球面三角の正接定理より、
tan(γ) = sin(90 - ε) × sin(A)/(cos(90 - ε) × sin(90 - h) - sin(90 - ε) × cos(90 - h) × cos(A))
= cos(ε) × sin(A)/(sin(ε) × cos(h) - cos(ε) × sin(h) × cos(A))
となり、
γ = arctan[cos(ε) × sin(A)/(sin(ε) × cos(h) - cos(ε) × sin(h) × cos(A))] ・・・(14)
となる。
Δx = x × cos(γ) + y × sin(γ) ・・・(I)
Δy = x × sin(γ) + y × cos(γ) ・・・(II)
Δx = x × cos(γ + ξ) + y × sin(γ + ξ) ・・・(III)
Δy= x × sin(γ + ξ) + y × cos(γ + ξ) ・・・(IV)
11 カメラボディ
13 撮像センサ(撮像素子)
14 撮像面
15 撮像センサ駆動ユニット(移動手段)
17 絞り駆動制御機構
21 CPU(演算手段)
23 LCDモニタ
25 メモリーカード
28 レリーズスイッチ
29 天体撮影スイッチ
30 設定スイッチ
31 GPSユニット(緯度情報入力手段)
33 方位角センサ(撮影方位角情報入力手段)
35 重力(水準)センサ(撮影仰角情報入力手段、カメラ姿勢情報入力手段)
101 撮影レンズ(撮影光学系)
102 像ブレ補正レンズ(防振レンズ)
103 レンズCPU
104 防振駆動ユニット
GSX X方向ジャイロセンサ
GSY Y方向ジャイロセンサ
GSR 回転検出ジャイロセンサ
Claims (14)
- 日周運動によって、撮影装置に対して相対運動する天体を撮影するために、前記撮影装置の撮影光学系によって撮像面に形成された天体像が、撮影中、撮像素子の所定の撮像領域に対して固定されるように、前記所定の撮像領域と天体像の少なくとも一方を撮影装置に対して相対移動させて撮影する天体自動追尾撮影方法であって、
撮影地点の緯度情報、撮影方位角情報、撮影仰角情報、撮影装置の姿勢情報、及び撮影光学系の焦点距離情報を入力する段階と、
前記入力した全情報を用いて、天体像を撮像素子の前記所定の撮像領域に対して固定するための前記撮影装置に対する相対移動量を算出する段階と、
算出した相対移動量に基づき、前記所定の撮像領域と天体像の少なくとも一方を移動させて撮影する段階と、
を有することを特徴とする天体自動追尾撮影方法。 - 請求の範囲第1項記載の天体自動追尾撮影方法において、前記算出した相対移動量に基づいて、前記撮像素子を撮影光学系の光軸に対して直交する方向に平行移動及び該光軸と平行な軸回りに回転移動させながら撮影して、天体を点として撮影する天体自動追尾撮影方法。
- 請求の範囲第1項記載の天体自動追尾撮影方法において、前記所定の撮像領域は、撮像素子の全撮像領域の一部を電子的にトリミングしたトリミング領域であり、前記算出した相対移動量に基づいて、前記トリミング領域を、撮影光学系の光軸に対して直交する方向に平行移動及び該光軸と平行な軸回りに回転移動させながら撮影して、天体を点として撮影する天体自動追尾撮影方法。
- 請求の範囲第1項記載の天体自動追尾撮影方法において、前記所定の撮像領域は、撮像素子の全撮像領域の一部を電子的にトリミングしたトリミング領域であり、前記算出した相対移動量に基づいて、前記撮影光学系の一部を偏心させることで天体像を撮影装置に対して移動させると共に、前記トリミング領域を、撮影光学系の光軸と平行な軸回りに回転移動させながら撮影して、天体を点として撮影する天体自動追尾撮影方法。
- 請求の範囲第1項記載の天体自動追尾撮影方法において、前記所定の撮像領域は、撮像素子の全撮像領域の一部を電子的にトリミングしたトリミング領域であり、前記算出した相対移動量に基づいて、前記撮像素子を撮影光学系の光軸に対して直交する方向に平行移動させると共に、前記トリミング領域を、撮影光学系の光軸と平行な軸回りに回転移動させながら撮影して、天体を点として撮影する天体自動追尾撮影方法。
- 請求の範囲第1項ないし第5項のいずれか1項記載の天体自動追尾撮影方法において、前記相対移動量は、前記入力した全情報と、天球上において天頂と天の極と撮影画面中心位置の天体を結ぶ球面三角形から算出される天体自動追尾撮影方法。
- 請求の範囲第6項記載の天体自動追尾撮影方法において、前記入力した緯度をε、方位角をA、仰角をh、撮影装置の姿勢情報として撮影光学系の光軸回りの水平からの回転角をξ、撮影光学系の焦点距離をfとしたとき、水平と天球の赤道がなす角γを下記式(14)により算出する段階と、
所定時間tにおける矩形の撮像素子の長辺方向及び短辺方向に対する天体像の相対移動量Δx、Δyを下記式(III)、(IV)により算出する段階と、を含む天体自動追尾撮影方法。
γ = arctan[cos(ε) × sin(A)/(sin(ε) × cos(h) - cos(ε) × sin(h) × cos(A))] ・・・(14)
Δx = x × cos(γ + ξ) + y × sin(γ + ξ) ・・・(III)
Δy = x × sin(γ + ξ) + y × cos(γ + ξ) ・・・(IV)
但し、
Δx = f × sinθ × sinφ ・・・(10)
Δy = f × sinθ × cosθ(1 - cosφ) ・・・(11)
θ:天の極方向と撮影光学系光軸との成す角、
φ:所定時間tにおける地球の自転角。 - 請求の範囲第1項記載の天体自動追尾撮影方法を実行するために、前記相対移動量を算出する演算手段を有する天体自動追尾撮影カメラ。
- 請求の範囲第8項記載の天体自動追尾撮影カメラにおいて、前記演算手段により算出された前記相対移動量に基づいて、前記撮像素子を撮影光学系の光軸に対して直交する方向に平行移動及び該光軸と平行な軸回りに回転移動する移動手段を有する天体自動追尾撮影カメラ。
- 請求の範囲第8項記載の天体自動追尾撮影カメラにおいて、前記撮像素子の全撮像領域の一部を電子的にトリミングしてトリミング領域とし、前記演算手段により算出された前記相対移動量に基づいて、前記トリミング領域を、撮影光学系の光軸に対して直交する方向に平行移動及び該光軸と平行な軸回りに回転移動する移動手段を有する天体自動追尾撮影カメラ。
- 請求の範囲第8項記載の天体自動追尾撮影カメラにおいて、前記撮像素子の全撮像領域の一部を電子的にトリミングしてトリミング領域とし、前記演算手段により算出された前記相対移動量に基づいて、前記撮影光学系の一部を偏心させることで天体像を撮影装置に対して移動させると共に、前記トリミング領域を、撮影光学系の光軸と平行な軸回りに回転移動する移動手段を有する天体自動追尾撮影カメラ。
- 請求の範囲第8項記載の天体自動追尾撮影カメラにおいて、前記撮像素子の全撮像領域の一部を電子的にトリミングしてトリミング領域とし、前記演算手段により算出された前記相対移動量に基づいて、前記撮像素子を撮影光学系の光軸に対して直交する方向に平行移動させると共に、前記トリミング領域を、撮影光学系の光軸と平行な軸回りに回転移動する移動手段を有する天体自動追尾撮影カメラ。
- 請求の範囲第8項ないし第12項のいずれか1項記載の天体自動追尾撮影カメラにおいて、前記演算手段は、前記入力した全情報と、天球上において天頂と天の極と撮影画面中心位置の天体を結ぶ球面三角形から前記相対移動量を算出する天体自動追尾撮影カメラ。
- 請求の範囲第13項記載の天体自動追尾撮影カメラにおいて、前記演算手段は、前記入力した緯度をε、方位角をA、仰角をh、撮影装置の姿勢情報として撮影光学系の光軸回りの水平からの回転角をξ、撮影光学系の焦点距離をfとしたとき、水平と天球の赤道がなす角γを下記式(14)により算出し、
所定時間tにおける矩形の撮像素子の長辺方向及び短辺方向に対する天体像の相対移動量Δx、Δyを下記式(III)、(IV)により算出する天体自動追尾撮影カメラ。
γ = arctan[cos(ε) × sin(A)/(sin(ε) × cos(h) - cos(ε) × sin(h) × cos(A))] ・・・(14)
Δx = x × cos(γ + ξ) + y × sin(γ + ξ) ・・・(III)
Δy = x × sin(γ + ξ) + y × cos(γ + ξ) ・・・(IV)
但し、
Δx = f × sinθ × sinφ ・・・(10)
Δy = f × sinθ × cosθ(1 - cosφ) ・・・(11)
θ:天の極方向と撮影光学系光軸との成す角、
φ:所定時間tにおける地球の自転角。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11775032.3A EP2566149A4 (en) | 2010-04-28 | 2011-04-27 | AUTOMATIC METHOD FOR TRACKING / CAPTURING CELESUM BODY IMAGES AND AUTOMATIC CAMERA FOR TRACKING / CAPTURING CELESTIAL BODY IMAGES |
US13/641,545 US9509920B2 (en) | 2010-04-28 | 2011-04-27 | Method of automatically tracking and photographing celestial objects, and camera employing this method |
CN201180021013.1A CN102859988B (zh) | 2010-04-28 | 2011-04-27 | 自动天体跟踪/图像捕获方法及自动天体跟踪/图像捕获摄像机 |
JP2012512872A JP5590121B2 (ja) | 2010-04-28 | 2011-04-27 | 天体自動追尾撮影方法及びカメラ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-103930 | 2010-04-28 | ||
JP2010103930 | 2010-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011136251A1 true WO2011136251A1 (ja) | 2011-11-03 |
Family
ID=44861549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/060219 WO2011136251A1 (ja) | 2010-04-28 | 2011-04-27 | 天体自動追尾撮影方法及びカメラ |
Country Status (5)
Country | Link |
---|---|
US (1) | US9509920B2 (ja) |
EP (1) | EP2566149A4 (ja) |
JP (2) | JP5590121B2 (ja) |
CN (1) | CN102859988B (ja) |
WO (1) | WO2011136251A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013005244A (ja) * | 2011-06-17 | 2013-01-07 | Pentax Ricoh Imaging Co Ltd | 天体自動追尾撮影方法及び天体自動追尾撮影装置 |
JP2015215427A (ja) * | 2014-05-08 | 2015-12-03 | オリンパス株式会社 | 撮像装置及び撮像方法 |
JP7518634B2 (ja) | 2020-03-06 | 2024-07-18 | Omデジタルソリューションズ株式会社 | 撮影システム及び撮影システムの撮影方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5790188B2 (ja) * | 2011-06-16 | 2015-10-07 | リコーイメージング株式会社 | 天体自動追尾撮影方法及び天体自動追尾撮影装置 |
US20160277713A1 (en) * | 2013-11-18 | 2016-09-22 | Kamil TAMIOLA | Controlled long-exposure imaging of a celestial object |
CN104869298A (zh) * | 2014-02-21 | 2015-08-26 | 联想(北京)有限公司 | 一种数据处理方法及电子设备 |
US10267890B2 (en) * | 2014-06-26 | 2019-04-23 | Nantong Schmidt Opto-Electrical Technology Co. Ltd. | Apparatus and methods for time-lapse astrophotography |
CN105141825B (zh) * | 2015-06-23 | 2018-08-21 | 努比亚技术有限公司 | 一种天体拍摄方法及装置 |
CN105718887A (zh) * | 2016-01-21 | 2016-06-29 | 惠州Tcl移动通信有限公司 | 基于移动终端摄像头实现动态捕捉人脸摄像的方法及*** |
CN110710193B (zh) * | 2017-06-12 | 2021-02-09 | 富士胶片株式会社 | 抖动检测装置和方法、摄像装置、透镜装置及摄像装置主体 |
CN111220177B (zh) * | 2018-11-24 | 2022-07-22 | 中国科学院长春光学精密机械与物理研究所 | 一种星点像亚像元定位精度的验证方法 |
JP7269354B2 (ja) * | 2019-09-05 | 2023-05-08 | Omデジタルソリューションズ株式会社 | 撮像装置、システム、像ぶれ補正方法、プログラム、及び記録媒体 |
US11047689B1 (en) * | 2020-03-14 | 2021-06-29 | Peter D. Poulsen | Orientation and navigation apparatus |
CN117941367A (zh) * | 2021-09-03 | 2024-04-26 | Oppo广东移动通信有限公司 | 成像设备、图像处理方法以及程序 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06130446A (ja) * | 1992-10-15 | 1994-05-13 | Olympus Optical Co Ltd | トリミングカメラ |
JP2003259184A (ja) | 2002-03-06 | 2003-09-12 | Olympus Optical Co Ltd | 撮像装置 |
JP2006279135A (ja) | 2005-03-28 | 2006-10-12 | Nec Corp | 星空撮影装置及び星空撮影方法並びにプログラム |
JP2007025616A (ja) | 2005-06-15 | 2007-02-01 | Pentax Corp | ステージ装置及びこのステージ装置を利用したカメラの像振れ補正装置 |
JP2008289052A (ja) * | 2007-05-21 | 2008-11-27 | Toshiba Corp | 撮影装置および撮影方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000224470A (ja) | 1999-02-02 | 2000-08-11 | Minolta Co Ltd | カメラシステム |
JP2002277736A (ja) | 2001-03-21 | 2002-09-25 | Olympus Optical Co Ltd | 撮像装置 |
JP2004201056A (ja) * | 2002-12-19 | 2004-07-15 | Satoyuki Ito | 電子追尾式天体写真撮影法 |
WO2004107012A1 (ja) | 2003-05-30 | 2004-12-09 | Vixen Co., Ltd. | 天体の自動導入装置 |
JP2006287375A (ja) | 2005-03-31 | 2006-10-19 | Casio Comput Co Ltd | 撮影装置、及びプログラム |
US7558405B2 (en) * | 2005-06-30 | 2009-07-07 | Nokia Corporation | Motion filtering for video stabilization |
JP2007089087A (ja) | 2005-09-26 | 2007-04-05 | Casio Comput Co Ltd | 天体撮像装置 |
JP5034343B2 (ja) | 2006-07-06 | 2012-09-26 | カシオ計算機株式会社 | 撮像装置及びプログラム |
JP5458802B2 (ja) | 2008-10-23 | 2014-04-02 | リコーイメージング株式会社 | デジタルカメラ |
US8310547B2 (en) * | 2008-12-05 | 2012-11-13 | Electronics And Telecommunications Research Institue | Device for recognizing motion and method of recognizing motion using the same |
JP2011114357A (ja) * | 2009-11-24 | 2011-06-09 | Panasonic Corp | 撮像装置 |
JP5779968B2 (ja) | 2010-05-19 | 2015-09-16 | リコーイメージング株式会社 | 天体自動追尾撮影方法及びカメラ |
JP5742465B2 (ja) | 2010-05-25 | 2015-07-01 | リコーイメージング株式会社 | 天体自動追尾撮影方法及び天体自動追尾撮影装置 |
JP5751014B2 (ja) | 2010-05-28 | 2015-07-22 | リコーイメージング株式会社 | 天体自動追尾撮影方法及び天体自動追尾撮影装置 |
-
2011
- 2011-04-27 US US13/641,545 patent/US9509920B2/en active Active
- 2011-04-27 JP JP2012512872A patent/JP5590121B2/ja active Active
- 2011-04-27 EP EP11775032.3A patent/EP2566149A4/en not_active Withdrawn
- 2011-04-27 WO PCT/JP2011/060219 patent/WO2011136251A1/ja active Application Filing
- 2011-04-27 CN CN201180021013.1A patent/CN102859988B/zh active Active
-
2014
- 2014-07-30 JP JP2014154579A patent/JP5773041B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06130446A (ja) * | 1992-10-15 | 1994-05-13 | Olympus Optical Co Ltd | トリミングカメラ |
JP2003259184A (ja) | 2002-03-06 | 2003-09-12 | Olympus Optical Co Ltd | 撮像装置 |
JP2006279135A (ja) | 2005-03-28 | 2006-10-12 | Nec Corp | 星空撮影装置及び星空撮影方法並びにプログラム |
JP2007025616A (ja) | 2005-06-15 | 2007-02-01 | Pentax Corp | ステージ装置及びこのステージ装置を利用したカメラの像振れ補正装置 |
JP2008289052A (ja) * | 2007-05-21 | 2008-11-27 | Toshiba Corp | 撮影装置および撮影方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2566149A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013005244A (ja) * | 2011-06-17 | 2013-01-07 | Pentax Ricoh Imaging Co Ltd | 天体自動追尾撮影方法及び天体自動追尾撮影装置 |
JP2015215427A (ja) * | 2014-05-08 | 2015-12-03 | オリンパス株式会社 | 撮像装置及び撮像方法 |
JP7518634B2 (ja) | 2020-03-06 | 2024-07-18 | Omデジタルソリューションズ株式会社 | 撮影システム及び撮影システムの撮影方法 |
Also Published As
Publication number | Publication date |
---|---|
CN102859988A (zh) | 2013-01-02 |
US20130033607A1 (en) | 2013-02-07 |
EP2566149A1 (en) | 2013-03-06 |
EP2566149A4 (en) | 2014-03-12 |
JP5590121B2 (ja) | 2014-09-17 |
JP2014209795A (ja) | 2014-11-06 |
CN102859988B (zh) | 2016-07-13 |
JPWO2011136251A1 (ja) | 2013-07-22 |
US9509920B2 (en) | 2016-11-29 |
JP5773041B2 (ja) | 2015-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5773041B2 (ja) | 撮影装置及び撮影方法 | |
JP5812120B2 (ja) | 撮影装置 | |
JP5742465B2 (ja) | 天体自動追尾撮影方法及び天体自動追尾撮影装置 | |
JP6237698B2 (ja) | 天体自動追尾撮影方法及び天体自動追尾撮影装置 | |
JP5790188B2 (ja) | 天体自動追尾撮影方法及び天体自動追尾撮影装置 | |
US8761460B2 (en) | Method of automatically tracking and photographing celestial objects, and celestial-object auto-tracking photographing apparatus | |
US8844148B2 (en) | Direction determining method and apparatus using a triaxial electronic compass | |
JP2012005112A (ja) | 天体自動追尾撮影方法及びカメラ | |
JP2013005244A6 (ja) | 天体自動追尾撮影方法及び天体自動追尾撮影装置 | |
JP6257439B2 (ja) | 撮像装置及び撮像方法 | |
JP7516623B2 (ja) | 天体追尾装置および天体追尾方法 | |
JP2012089960A (ja) | 手ぶれ防止機構を備えたカメラ | |
JP2018197825A (ja) | 制御装置及び方法、及び撮像装置 | |
JP6402640B2 (ja) | 撮影システム | |
JP2013005009A (ja) | 天体自動追尾撮影方法及び天体自動追尾撮影装置 | |
JP2021145325A (ja) | 撮影装置、撮影方法、撮影システム及び電子機器 | |
JP2018128624A (ja) | 撮影装置、撮影補助機器及び撮影システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180021013.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11775032 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012512872 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13641545 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2011775032 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011775032 Country of ref document: EP |