Sloan Digital Sky Survey Telescope Technical Note 19910801 . ... It has long been apparent that an all-sky picture of clouds over an observatory site and available in near real-time would be a great benefit to personnel using a telescope. ... We have anecdotal evidence from J.T. Williams of MMTO and David Westfall, formerly of CFHT and now of New Mexico Institute of Mining, that video-rate 10 micron cameras are very effective at imaging clouds. ... The focal length of the mirror is 25 mm. ...

... This oral history with Joe Loftus is being conducted for the Johnson Space Center Oral History Project at the offices of the Signal Corporation in Houston, Texas. ... We're so glad you could be with us today, Mr. Loftus. ... By that time the war was over. ... So one of the things that happens is people who are working for the losing corporations may go to work for the government agency that's going to supervise the program or they may go to work for the contractor who won the award. ... Loftus: Sure...

... Beam from Telescope M2, at edge of FOV Window З Baffle Cryostat Telescope M1 M1 Cell region Lens Barrel G10 truss Cold Bench Sensor Mount flange Cable wrap region Warm electronics FPA Filter wheel `Services bundle' Figure 1: General view of the VISTA infrared camera layout The specification on the net imaging performance of the system is for point spread function of width compatible with the detectors pixel size (0.34ДД) over this wide FOV and over wavelength range 1.0 to 2.35um. ...