CN1940467A - Photoelectric telescope capable of being used for high-resolution imaging and photometric measurement simultaneously - Google Patents
Photoelectric telescope capable of being used for high-resolution imaging and photometric measurement simultaneously Download PDFInfo
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- CN1940467A CN1940467A CN 200610112432 CN200610112432A CN1940467A CN 1940467 A CN1940467 A CN 1940467A CN 200610112432 CN200610112432 CN 200610112432 CN 200610112432 A CN200610112432 A CN 200610112432A CN 1940467 A CN1940467 A CN 1940467A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 41
- 238000005375 photometry Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000003044 adaptive effect Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 3
- 241000219739 Lens Species 0.000 description 23
- 210000000695 crystalline len Anatomy 0.000 description 23
- 239000006185 dispersion Substances 0.000 description 4
- 238000011896 sensitive detection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004304 visual acuity Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
A photoelectric telescope capable of being used for high-resolution imaging and photometric measurement simultaneously comprises a telescope system, a self-adaptive optical system, an imaging system and a photometric measurement system, wherein the imaging system and the photometric measurement system are positioned behind a deformable mirror of the self-adaptive optical system, and a core detection device of the photometric measurement system is an EMCCD detector. The invention can improve the measurement precision of the photometric measurement system and the imaging resolution of the imaging system, and simultaneously, the core detection device EMCCD of the photometric measurement system has low noise (the readout noise is less than 1 e)－) The quantum efficiency is high, and the precision of target luminosity information measurement can be further improved.
Description
Technical field
The present invention relates to a kind of photo-electric telescope, particularly can be used for high resolution imaging and photometric measurement simultaneously.
Background technology
Self-adaptive optical telescope has obtained application in the target high resolution imaging.The 943rd page of Yunnan Observatory 1.2m self-adaptive optical telescope can be used for the target high resolution imaging among the SPIE that published in 2004, yet this self-adaptive optical telescope only is used for high resolution imaging, can not be used for photometric measurement.
Summary of the invention
The technical matters that the present invention solves is: overcome the deficiencies in the prior art, a kind of photo-electric telescope that can be used for high resolution imaging and photometric measurement simultaneously is provided.
Technical solution of the present invention is: the photo-electric telescope that can be used for high resolution imaging and photometric measurement simultaneously, by telescopic system, ADAPTIVE OPTICS SYSTEMS, imaging system and photometric measure system are formed, imaging system and photometric measure system comprise imaging system and photometric measure system, light from target is through primary mirror, behind the telescopic system that secondary mirror and catoptron are formed, enter ADAPTIVE OPTICS SYSTEMS, promptly arrive spectroscope through high speed inclined mirror and catoptron, part light enters smart tracking detector again after the spectroscope transmission enters the tracking object lens, handle by smart tracking processor again, spectroscopical another part light is respectively successively through importing the beam system 1 that contracts behind three catoptrons, contract beam system 1 by off-axis paraboloidal mirror, off-axis paraboloidal mirror and field lens are formed, the effect of beam system 1 of contracting is the beam size that telescope comes to be compressed to the distorting lens bore mate, and make telescope primary mirror and distorting lens satisfy the image conjugate relation, light by the beam system 1 that contracts arrives spectroscope through high speed inclined mirror and distorting lens, behind the catoptron and the beam system 2 that contracts, enter Hartmann sensor from the light of spectroscope reflection, the light of transmission arrives spectroscope, enter photometric measure system from the light of spectroscope reflection, the light of transmission simultaneously enters imaging detection system and carries out imaging detection.
Principle of the present invention: after imaging system of the present invention and photometric measure system were positioned at the distorting lens of ADAPTIVE OPTICS SYSTEMS, photometric measure system core sensitive detection parts were EMCCD.Because ADAPTIVE OPTICS SYSTEMS has been proofreaied and correct wavefront disturbance high-order error and part integral inclination error, imaging system and photometric measure system are positioned at the imaging resolving power that can improve the measuring accuracy and the imaging system of photometric measure system behind the distorting lens of ADAPTIVE OPTICS SYSTEMS, and photometric measure system core sensitive detection parts EMCCD noise is little simultaneously (reads noise＜1e
-) the quantum efficiency height, can further improve the precision of target luminosity information measurement.
The present invention compared with prior art has following advantage: 1. this photo-electric telescope can be used for high resolution imaging and photometric measurement simultaneously; 2. because ADAPTIVE OPTICS SYSTEMS has been proofreaied and correct wavefront disturbance high-order error and part integral inclination error, improved the measuring accuracy of the resolving power and the photometric measure system of imaging system.3. the core sensitive detection parts EMCCD quantum efficiency height in the photometric measure system, noise is little (reads noise＜1e
-), detectivity is strong, can further improve the photometric measurement precision.
Description of drawings
Fig. 1 is photo-electric telescope synoptic diagram among the present invention;
Fig. 2 is imaging system and photometric measure system synoptic diagram among the present invention.
Among the figure: 1 primary mirror, 2 secondary mirrors, 3 catoptrons, 4 inclined mirrors 1,5 catoptrons, 6 spectroscopes, 7 catoptrons, 8 catoptrons, 9 catoptrons, 10 off-axis paraboloidal mirrors, 11 off-axis paraboloidal mirrors, 12 field lenses, 13 inclined mirrors, 2,14 distorting lenss, 15 spectroscopes, 16 beam system 1,17 catoptrons that contract, 18 contract beam system 2,19 imaging systems and photometric measure systems, 20 Hartmann sensors, 21 follow the tracks of object lens, 22 smart tracking detectors, 23 spectroscopes, 24 EMCCD, 25 photosensitive target surfaces, 26 luminosity processors, 27 imaging detectors, 28 image acquisition register systems, 29 imaging systems, 30 smart tracker processors, 31 ADAPTIVE OPTICS SYSTEMS, 32 telescopic systems, 33 photometric measure systems, 34 atmospheric dispersion correctors (ADC), 35 optical filter dishes (F), 36 field stops, 37 image-forming objective lens groups, 38 image-forming objective lens groups.
Embodiment
As shown in Figure 1, as shown in Figure 1, the present invention is by telescopic system 32, ADAPTIVE OPTICS SYSTEMS 31, imaging system and photometric measure system 19 are formed, imaging system and photometric measure system 19 comprise imaging system 29 and photometric measure system 33, light from target is through primary mirror 1, behind the telescopic system 32 that secondary mirror 2 and catoptron 3 are formed, enter ADAPTIVE OPTICS SYSTEMS 31, promptly arrive spectroscope 6 through high speed inclined mirror 4 and catoptron 5, part light enters smart tracking detector 22 again after spectroscope 6 transmissions enter tracking object lens 21, handle by smart tracking processor 30 again, another part light of spectroscope 6 passes through catoptron 7 respectively successively, 8,9 import the beam system 1 (16) that contracts, contract beam system 1 (16) by off-axis paraboloidal mirror 10, off-axis paraboloidal mirror 11 and field lens 12 are formed, the effect of beam system 1 (16) of contracting is that the beam size with telescope 32 is compressed to the distorting lens bore and mates, and make telescope primary mirror 1 and distorting lens 14 satisfy the image conjugate relation, light by the beam system that contracts arrives spectroscope 15 through high speed inclined mirror 13 and distorting lens 14, enter Hartmann sensor 20 from the light of spectroscope 15 reflections through the catoptron 17 and the beam system 18 that contracts, the light of transmission arrives spectroscope 23, enter photometric measure system 33 from the light of spectroscope 23 reflections, the light of transmission simultaneously enters imaging detection system 29.
ADAPTIVE OPTICS SYSTEMS 31 is made up of three corrective loops, the smart tracking control loop that the loop is made up of large travel high-speed inclined mirror 4, tracking object lens 21 and smart tracking detector 22 and smart tracker processor 30, the residual error that is used to proofread and correct the thick tracking loop of telescope; Another loop is high-precision tracking control loop, the residual error that it mainly adopts high speed inclined mirror 13 to proofread and correct smart tracking control loop, its control signal is provided by the integral inclination signal of Shack-Hartmann wavefront sensor, beam split be can reduce like this, the control bandwidth and the accuracy requirement of target slant correction satisfied; The 3rd distorting lens of serving as reasons high frame frequency low light level Shack-Hartmann wave front sensor 20 and mate in the loop 14, and real-time wave front processor composition high-order error correction loop are used to proofread and correct atmospheric turbulence and telescope is shaken higher order aberratons and the static aberration that produces.
Be illustrated in figure 2 as imaging system 29 and photometric measure system 33, wherein imaging system 29 comprises imaging detector 27, image acquisition register system 28, image-forming objective lens group 37, atmospheric dispersion corrector (ADC) 34, optical filter dish (F) 35 and field stop 36 etc.Image-forming objective lens 37 has different coke ratios, is used to regulate different imaging viewing fields.Atmospheric dispersion corrector (ADC) 34 is used to compensate the influence of atmospheric dispersion.Neutral colour filter and spectral filter are housed, the influence that is used to regulate luminosity and suppresses bias light on the optical filter dish 35.
Photometric measure system 33 comprises EMCCD detector 24 and luminosity processor 26 and objective lens 38, enter EMCCD detector 24 luminosity that obtains of surveying from the light of spectroscope 23 reflections through objective lens 38, the signal of its output is delivered to luminosity processor 26 and is calculated, and 1. luminosity processor 26 is calculated the luminosity of hot spot by formula:
In the formula, m=1～M, n=1～N is M wherein, and N is respectively the pixel coverage of EMCCD detector 24 photosensitive target surfaces 25, I
NmBe (n, m) signal received of individual pixel-by-pixel basis on the EMCCD24 photosensitive target surface 25.
Claims (2)
1, a kind of photo-electric telescope that can be used for high resolution imaging and photometric measurement simultaneously, it is characterized in that: comprise telescopic system (32), ADAPTIVE OPTICS SYSTEMS (31), imaging system and photometric measure system (19), photometric measure system (19) is wherein arranged, light from target is through primary mirror (1), behind the telescopic system (32) that secondary mirror (2) and catoptron (3) are formed, enter ADAPTIVE OPTICS SYSTEMS (31), promptly arrive spectroscope (6) through high speed inclined mirror (4) and catoptron (5), part light enters smart tracking detector (22) again after spectroscope (6) transmission enters tracking object lens (21), handle by smart tracking processor (30) again, another part light of spectroscope (6) is respectively successively through three catoptrons (7,8,9) import the beam system 1 (16) that contracts, contract beam system 1 (16) by off-axis paraboloidal mirror (10), off-axis paraboloidal mirror (11) and field lens (12) are formed, the effect of beam system 1 (16) of contracting is that the beam size that telescope (32) comes is compressed to bore coupling with distorting lens (14), and make telescope primary mirror (1) and distorting lens (14) satisfy the image conjugate relation, light by the beam system 1 (16) that contracts arrives spectroscope (15) through high speed inclined mirror (13) and distorting lens (14), enter Hartmann sensor (20) from the light of spectroscope (15) reflection through the catoptron (17) and the beam system 2 (18) that contracts, the light of transmission arrives spectroscope (23), enter photometric measure system (33) from the light of spectroscope (23) reflection and carry out photometric measurement, the light of transmission simultaneously enters imaging detection system (29) and carries out imaging detection.
2, the photo-electric telescope that can be used for high resolution imaging and photometric measurement simultaneously according to claim 1, it is characterized in that: described photometric measure system (33) comprises EMCCD detector (24) and luminosity processor (26) and objective lens (38), enter EMCCD detector (24) luminosity that obtains of surveying from the light of spectroscope (23) reflection through objective lens (38), the signal of its output is delivered to luminosity processor (26) and is carried out luminosity calculating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610112432A CN100587389C (en) | 2006-08-17 | 2006-08-17 | Photoelectric telescope capable of being used for high-resolution imaging and photometric measurement simultaneously |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610112432A CN100587389C (en) | 2006-08-17 | 2006-08-17 | Photoelectric telescope capable of being used for high-resolution imaging and photometric measurement simultaneously |
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| Publication Number | Publication Date |
|---|---|
| CN1940467A true CN1940467A (en) | 2007-04-04 |
| CN100587389C CN100587389C (en) | 2010-02-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466576A (en) * | 2015-12-31 | 2016-04-06 | 中国科学院光电技术研究所 | Device and method for synchronously measuring height and angle non-isohalo wavefront errors of atmospheric turbulence |
| CN107388900A (en) * | 2017-05-04 | 2017-11-24 | 成都安的光电科技有限公司 | Unmanned plane breaks through system |
-
2006
- 2006-08-17 CN CN200610112432A patent/CN100587389C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466576A (en) * | 2015-12-31 | 2016-04-06 | 中国科学院光电技术研究所 | Device and method for synchronously measuring height and angle non-isohalo wavefront errors of atmospheric turbulence |
| CN105466576B (en) * | 2015-12-31 | 2018-09-28 | 中国科学院光电技术研究所 | Device and method for synchronously measuring height and angle non-isohalo wavefront errors of atmospheric turbulence |
| CN107388900A (en) * | 2017-05-04 | 2017-11-24 | 成都安的光电科技有限公司 | Unmanned plane breaks through system |
| CN107388900B (en) * | 2017-05-04 | 2023-06-16 | 成都安的光电科技有限公司 | Unmanned aerial vehicle reaction system |
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| Publication number | Publication date |
|---|---|
| CN100587389C (en) | 2010-02-03 |
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