The State of the Focus and Image Quality of the SIRTF CTA

Computer Science – Performance

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

We describe the process by which the NASA Space Infrared Telescope Facility (SIRTF) cryogenic telescope assembly was brought into focus after arrival of the spacecraft in orbit. The ground rules of the mission did not allow us to make a conventional focus sweep. A number of analytical diagnostic tools were developed to facilitate evaluation of the state of the CTA focus through a program of passive imaging during the observatory cool-down time period. With these tools, the in orbit focus position was first determined. These tools were then used to evaluate the effects of an initial small exploratory move which verified the health and calibration of the secondary focus mechanism. A second large move of the secondary mirror was then commanded to bring the telescope into focus. We present images that show the point spread function (PSF) of the CTA as a function of wavelength and demonstrate that the level one requirement of diffraction limited performance at a wavelength of 6.5 microns was met.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The State of the Focus and Image Quality of the SIRTF CTA 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 The State of the Focus and Image Quality of the SIRTF CTA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The State of the Focus and Image Quality of the SIRTF CTA will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1418465

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.