Simple Cassegrain scanning system for infrared astronomy

Details Simple Cassegrain scanning system for infrared astronomy Simple Cassegrain scanning system for infrared astronomy

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apopt..19.1590a&link_type=abstract

Applied Optics, vol. 19, May 15, 1980, p. 1590-1592.

Physics

Optics

5

Cassegrain Optics, Infrared Astronomy, Infrared Scanners, Design Analysis, Imaging Techniques

Scientific paper

To meet the need for a reliable, fast imaging system capable of being taken rapidly on and off the telescope, a simple, inexpensive, and compact Cassegrain reimaging system for scanning IR images was constructed. Using commercially available components without requiring close mechanical tolerances, the design solves the problem of beam stability pointed out by Koornneef and van Overbeeke (1976). For the moving-iron galvanometer scanner, it is noted that at the imaging frequency of 0.5 Hz, hysteresis in image plane motion was found to be less than 0.2 arc sec for a 64-arc sec scan, and the deviation from linearity with a triangular wave input was found to be less than 0.3 arc sec. This system and a scanning secondary were used to image Venus at 11.5 microns, and compared with the scanning secondary, the reimaging system did not appear to contribute any additional noise, considerably improved mechanical reliability, and eliminated cross-scan motion

Affiliated with

Also associated with

No associations

Rating

Simple Cassegrain scanning system for infrared astronomy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Simple Cassegrain scanning system for infrared astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simple Cassegrain scanning system for infrared astronomy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1359155