Stray light issues for background-limited infrared telescope operation

1991 ◽  
Author(s):  
Marija Scholl ◽  
James W. Scholl
1988 ◽  
Vol 108 ◽  
pp. 181-182
Author(s):  
M. Tamura ◽  
T. Hasegawa ◽  
N. Ukita ◽  
I. Gatley ◽  
I. S. McLean ◽  
...  

Infared polarimetric and photometric mapping observations at K(2.2 μm) and H(1.65 μm) have revealed an extended dust envelope around the late-type star IRC+10216. The observations were made on the 3.8-m United Kingdom Infrared Telescope on Mauna Kea, Hawaii, in 1985 December and 1987 January and February. The polarization observations were made by emplying the Kyoto polarimeter (Sato et al. 1987). Great care was taken to check the contamination by stray light in the telescope and instruments as the source on peak was extremely bright (K~0 mag). From the observations of normal stars, we found that the polarized intensity (degree of polarization times the intensity) was a good measure of the envelope, free from contamination by stray light, although the intensity and the degree of polarization suffered from the contamination separately.


2010 ◽  
Author(s):  
Jing Xiao ◽  
Xiuwen Yao ◽  
Bin Zhang ◽  
Shuguang Zeng ◽  
Pan He

2002 ◽  
Vol 4 ◽  
pp. 407-407
Author(s):  
H. Shibai ◽  
S. Arimura ◽  
T. Teshima ◽  
Y. Doi ◽  
T. Nakagawa ◽  
...  
Keyword(s):  

2000 ◽  
Vol 6 (4) ◽  
pp. 62-63
Author(s):  
L.M. Shulman ◽  
Y.A. Melenevsky
Keyword(s):  

1990 ◽  
Vol 123 ◽  
pp. 215-222
Author(s):  
Toshio Matsumoto

AbstractIRTS is a small cryogenically cooled telescope onboard the small space platform SFU (Space Flyer Unit). SFU will be launched with the new Japanese HII rocket on January 1994 and retrieved by the space shuttle.The IRTS telescope has an aperture of only 15 cm diameter, but is optimized to observe diffuse extended infrared sources. Four focal plane instruments are being developed under collaboration between Japan and the U.S.A. IRTS covers a wide wavelength range from near-infrared to submillimeter region, and has a capability for the spectroscopic measurement. Due to newly developed detectors, the sky will be surveyed with very high sensitivities. IRTS will provide valuable data on cosmology, galactic structure, cosmic dust, etc.


1999 ◽  
Vol 70 (10) ◽  
pp. 3886-3888 ◽  
Author(s):  
M. Adelt ◽  
R. Körber ◽  
W. Drachsel ◽  
H.-J. Freund

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