Image Processing Reference
Costa, J.B., S. Hippler, M. Feldt, S. Esposito, R. Ragazzoni, P. Bizenberger, E.
Puga, T.F.E. Henning, “PYRAMIR: a near-infrared pyramid wavefront sensor
for the Calar Alto adaptive optics system,” Proceedings of SPIE ,
Kasper, M., D.P. Looze, S. Hippler, T. Herbst, A. Glindemann, T. Ott, A.
Wirth, “ALFA: Adaptive Optics for the Calar Alto Observatory Optics, Con-
trol Systems, and Performance,” Experimental Astronomy , 10 , 49-73 (2000).
Canada France Hawaii Telescope
The Canada France Hawaii Telescope (CFHT) is located on Mauna Kea on the is-
land of Hawaii at an altitude of 4200 meters. The CFHT has a 3.6-m aperture that
supports a wide range of optical and infrared instruments, including PUEO and
adaptive optics bonette that employs a curvature sensor to provide correction. An
image-stabilized spectrometer, based on an active mirror system, is also available.
The CFHT is operated by the National Research Council of Canada, Centre Na-
tional de la Recherche Scientifique of France, and the University of Hawaii, U.S.A.
Lai, O., F. Ménard, J. Cuillandre, “PUEO NUI: feasible and fast upgrade of the
CFHT adaptive optics system for high-dynamic range imaging,” Proceedings
of SPIE , 4839 , 659-672 (2003).
Lai, O., J. Veran, F.J. Rigaut, D. Rouan, P. Gigan, F. Lacombe, P.J. Lena, R.
Arsenault, D.A. Salmon, J. Thomas, D. Crampton, J.M. Fletcher, J.R. Stilburn,
C. Boyer, P. Jagourel, “CFHT adaptive optics: first results at the telescope,”
Proceedings of SPIE , 2871 , 859-870 (1997).
Cerro Tololo Inter-American Observatory
The Cerro Tololo Inter-American Observatory (CTIO), 80 km east of La Serena,
Chile, at an altitude of at 2200 meters, is operated by the National Optical Astronomy
Observatory. It hosts a 4-m Victor M. Blanco telescope, the 4.1-m SOAR telescope,
and four telescopes in the 0.9 to 1.5-m aperture range. The Blanco telescope is
equipped with an autoguider and a tip-tilt secondary mirror. The tip-tilt secondary
provides an f /14.5 focus, commonly used with the facility's infrared imager/spectro-
graph. The SOAR telescope has a thin, lightweight primary mirror with electrome-
chanical actuators to control the figure, a hexapod secondary mirror for real-time
optical alignment, and a tertiary mirror that provides tip-tilt correction to improve
image quality in the near infrared.