Status update and closed-loop performance of the Magellan adaptive optics VisAO camera

Derek Kopon, Laird M Close, Jared Males, Victor Gasho, Katie Morzinski, Katherine Follette

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

We present laboratory results of the closed-loop performance of the Magellan Adaptive Optics (AO) Adaptive Secondary Mirror (ASM), pyramid wavefront sensor (PWFS), and VisAO visible adaptive optics camera. The Magellan AO system is a 585-actuator low-emissivity high-throughput system scheduled for first light on the 6.5 meter Magellan Clay telescope in November 2012. Using a dichroic beamsplitter near the telescope focal plane, the AO system will be able to simultaneously perform visible (500-1000 nm) AO science with our VisAO camera and either 10 μm or 3-5 μm science using either the BLINC/MIRAC4 or CLIO cameras, respectively. The ASM, PWS, and VisAO camera have undergone final system tests in the solar test tower at the Arcetri Institute in Florence, Italy, reaching Strehls of 37% in i'-band with 400 modes and simulated turbulence of 14 cm ro at v-band. We present images and test results of the assembled VisAO system, which includes our prototype advanced Atmospheric Dispersion Corrector (ADC), prototype calcite Wollaston prisms for SDI imaging, and a suite of beamsplitters, filters, and other optics. Our advanced ADC performs in the lab as designed and is a 58% improvement over conventional ADC designs. We also present images and results of our unique Calibration Return Optic (CRO) test system and the ASM, which has successfully run in closedloop at 1kHz. The CRO test is a retro reflecting optical test that allows us to test the ASM off-sky in close-loop using an artificial star formed by a fiber source.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8447
DOIs
StatePublished - 2012
EventAdaptive Optics Systems III - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Other

OtherAdaptive Optics Systems III
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

Fingerprint

Adaptive optics
Adaptive Optics
adaptive optics
Closed-loop
Update
Camera
Cameras
cameras
Corrector
Mirror
Mirrors
Optics
Test System
mirrors
Telescopes
Telescope
Calibration
optics
Prototype
Emissivity

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kopon, D., Close, L. M., Males, J., Gasho, V., Morzinski, K., & Follette, K. (2012). Status update and closed-loop performance of the Magellan adaptive optics VisAO camera. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8447). [84473D] https://doi.org/10.1117/12.926446

Status update and closed-loop performance of the Magellan adaptive optics VisAO camera. / Kopon, Derek; Close, Laird M; Males, Jared; Gasho, Victor; Morzinski, Katie; Follette, Katherine.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447 2012. 84473D.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kopon, D, Close, LM, Males, J, Gasho, V, Morzinski, K & Follette, K 2012, Status update and closed-loop performance of the Magellan adaptive optics VisAO camera. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8447, 84473D, Adaptive Optics Systems III, Amsterdam, Netherlands, 7/1/12. https://doi.org/10.1117/12.926446
Kopon D, Close LM, Males J, Gasho V, Morzinski K, Follette K. Status update and closed-loop performance of the Magellan adaptive optics VisAO camera. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447. 2012. 84473D https://doi.org/10.1117/12.926446
Kopon, Derek ; Close, Laird M ; Males, Jared ; Gasho, Victor ; Morzinski, Katie ; Follette, Katherine. / Status update and closed-loop performance of the Magellan adaptive optics VisAO camera. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447 2012.
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