Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521...
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Transcript of Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521...
![Page 1: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/1.jpg)
Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT
Xiaoyin Zhu
Dec 12, 2012
OPTI 521 Paper Synopsis
By T.E. Pickering, etc.
![Page 2: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/2.jpg)
Contents
Background-MMT
Wavefront sensing system
Current work
![Page 3: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/3.jpg)
Background
http://www.mmto.org/
MMT
Multiple Mirror Telescope
6.5-meter diameter
Operated by
MMT Observatory (MMTO)
Location: Mt. Hopkins
60 kilometers (37 miles)
south of Tucson, AZ
![Page 4: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/4.jpg)
Background
The Original MMT (1979-1998) New MMT Telescope (2000- Date)
![Page 5: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/5.jpg)
Background
Classical Cassegrain optical design
![Page 6: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/6.jpg)
F/5
MMT F/9
F/15
Background
![Page 7: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/7.jpg)
F/9 wavefront sensor
![Page 8: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/8.jpg)
F/9 wavefront sensor
![Page 9: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/9.jpg)
F/9 wavefront sensor
Representative reference (left) and data (right) images taken with the f/9 Shack-Hartmann wavefront sensor
![Page 10: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/10.jpg)
F/5 wavefront sensor
![Page 11: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/11.jpg)
F/5 wavefront sensor
F/5 Focus
Lenslet ArrayFL= 40 mm
CollimatorFL= 40 mm
CCD Negative field lens
A negative field lens is added to image the system pupil on the lenslet array
![Page 12: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/12.jpg)
F/5 wavefront sensor
Representative reference (left) and data (right) images taken with the f/5 wavefront sensor
![Page 13: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/13.jpg)
WAVEFRONT ANALYSIS AND SOFTWARE
![Page 14: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/14.jpg)
Results and performance
Before correction
After correction
![Page 15: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/15.jpg)
Upgrade the F/9 Wavefront sensor
Current system has some
cutoff at the edges
Ideal image fits the lenslet array
![Page 16: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/16.jpg)
Upgrade the F/9 Wavefront sensor
![Page 17: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/17.jpg)
Upgrade the F/9 Wavefront sensor
![Page 18: Active Optics and Wavefront Sensing at the Upgraded 6.5-meter MMT Xiaoyin Zhu Dec 12, 2012 OPTI 521 Paper Synopsis By T.E. Pickering, etc.](https://reader035.fdocuments.in/reader035/viewer/2022070414/5697c01e1a28abf838cd1295/html5/thumbnails/18.jpg)
Thank you!