@inproceedings{fe368aff58374dc5bd2f8344932ee544,
title = "High-resolution infrared imaging utilizing a tip-tilt secondary mirror",
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.",
author = "Close, {Laird M.} and Wittman, {David M.} and McCarthy, {Donald W.}",
year = "1994",
language = "English (US)",
isbn = "0819414964",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
pages = "447--457",
editor = "Ealey, {Mark A.} and Fritz Merkle",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",
note = "Adaptive Optics in Astronomy ; Conference date: 17-03-1994 Through 18-03-1994",
}