High-resolution infrared imaging utilizing a tip-tilt secondary mirror

Laird M Close, David M. Wittman, Donald W Mccarthy

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

4 Scopus citations

Abstract

A tip-tilt secondary system has been developed on a 2.3 m telescope. The system, called FASTTRAC, stabilizes image motion to less than 0.1' rms at closed loop corrective frequencies of ≤ 100 Hz. Resolutions of 0.19' and Strehl ratios of 0.14 have been obtained in long exposure images at 1.6 μm in seeing conditions of D/ro approximately 4. FASTTRAC is unique in its ability to use infrared guide stars (K ≤ 8). Recently FASTTRAC was upgraded to accommodate a low read noise CCD, allowing faint visible guide stars to be utilized. We anticipate that guide stars of R = 17 will be adequate at correction frequencies of 30 Hz.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsMark A. Ealey, Fritz Merkle
Pages447-457
Number of pages11
Volume2201
Publication statusPublished - 1994
EventAdaptive Optics in Astronomy - Kailua, HI, USA
Duration: Mar 17 1994Mar 18 1994

Other

OtherAdaptive Optics in Astronomy
CityKailua, HI, USA
Period3/17/943/18/94

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Close, L. M., Wittman, D. M., & Mccarthy, D. W. (1994). High-resolution infrared imaging utilizing a tip-tilt secondary mirror. In M. A. Ealey, & F. Merkle (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2201, pp. 447-457)