Showing papers by "Roger H. Hildebrand published in 1978"
TL;DR: A 15 by 15 arcmin region surrounding Sgr A has been mapped at a mean wavelength of 540 microns as discussed by the authors, and the principal feature is a ridge about 10 arcmin long running parallel to the galactic equator.
Abstract: A 15 by 15 arcmin region surrounding Sgr A has been mapped at a mean wavelength of 540 microns. The principal feature is a ridge about 10 arcmin long running parallel to the galactic equator and approximately centered on Sgr A but with no peak at that point. The ridge coincides with the 25- and 55-km/s clouds seen in molecular line observations. The mass of the clouds is estimated, and their positions with respect to the galactic center are discussed.
14 citations
TL;DR: A design is presented for achieving compact ir heat trap field optics by incorporation of a lens into the light collector.
Abstract: A design is presented for achieving compact ir heat trap field optics by incorporation of a lens into the light collector.
11 citations