Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103.1020r&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, Sept. 1991, p. 1020-1032. Research supported by NS
Astronomy and Astrophysics
Astronomy
26
Mirrors, Point Spread Functions, Seeing (Astronomy), Telescopes, Astronomical Models, Atmospheric Turbulence, Charge Coupled Devices, Least Squares Method
Scientific paper
A large and homogeneous set of images-quality data, obtained with HRCam at the prime focus of the Canada-France-Hawaii Telescope (CFHT), was correlated with thermal sensor data to identify and quantify 'local seeing' effects. The main findings are as follows: (1) mirror seeing is an important source of image spread and amounts to FWHM = 0.40 arcsec per deg C exp 6/5 when the primary mirror is warmer than the air inside the dome; (2) dome seeing is marginally significant, at the rate of about 0.1 arcsec per deg C exp 6/5 of temperature difference between the air inside and outside the dome; (3) optical aberrations from the CFHT primary mirror and from HRCam currently impose a limit of FWHM = 0.38 arcsec to the imagae quality; (4) the median natural atmospheric seeing at the CFHT site on Mauna Kea is FWHM = 0.43 arcsec +/- 0.05 arcsec, the 10th and 90th percentiles being about 0.25 arcsec and 0.7,arcsec, respectively.
Cowley David
Racine Rene
Salmon Derrick
Sovka Jerry
No associations
LandOfFree
Mirror, dome, and natural seeing at CFHT 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 Mirror, dome, and natural seeing at CFHT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mirror, dome, and natural seeing at CFHT will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1342096