Cold sources observations in the millimetric region from the TIRGO telescope

Details Cold sources observations in the millimetric region from the TIRGO telescope Cold sources observations in the millimetric region from the TIRGO telescope

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ncimc..13..313a&link_type=abstract

Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 13 C, Jan.-Feb. 1990, p. 313-320.

Astronomy and Astrophysics

Astronomy

Infrared Sources (Astronomy), Infrared Telescopes, Millimeter Waves, Photometers, Continuous Radiation, Infrared Photometry, Interstellar Matter

Scientific paper

The techniques and instrumentation used to observe cold galactic and extragalactic sources at the Italian IR observatory TIRGO are briefly characterized. The photometer employs uncooled optics to match the detector and telescope f-numbers, an optical alignment device, a focal-plane modulator, a reference source for atmospheric-transmission measurements, and a Chanin-type He-3-cooled bolometer detector with optical NEP 8.0 fW/sq rt Hz, corresponding to noise-equivalent flux 13 Jy/sq rt Hz under good atmospheric conditions (precipitable water 1 mm). Typical results from transmittance measurements and observations performed in 1988 are presented in tables; it is found that atmospheric transmission alone does not determine the quality of the observing conditions, which are affected by patchiness and time variation in the water-vapor content. It is suggested that the use of a three-beam modulation technique could improve the results significantly.

Affiliated with

Also associated with

No associations

Rating

Cold sources observations in the millimetric region from the TIRGO telescope 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 Cold sources observations in the millimetric region from the TIRGO telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cold sources observations in the millimetric region from the TIRGO telescope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1843145