Precision limits of the twin-beam multiband URSULA
- Author
- Fedel, B.
- Published
- Sep 1, 1988.
- Physical Description
- 1 electronic document
- Additional Creators
- Santagati, G., Paterno, L., Ventura, R., and Debiase, G. A.
Online Version
- hdl.handle.net , Connect to this object online.
- Restrictions on Access
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary
- URSULA is a multiband astronomical photoelectric photometer which minimizes errors introduced by the presence of the atmosphere. It operates with two identical channels, one for the star to be measured and the other for a reference star. After a technical description of the present version of the apparatus, some measurements of stellar sources of different brightness, and in different atmospheric conditions are presented. These measurements, based on observations made with the 91 cm Cassegrain telescope of the Catania Astrophysical Observatory, are used to check the photometer accuracy and compare its performance with that of standard photometers.
- Other Subject(s)
- Collection
- NASA Technical Reports Server (NTRS) Collection.
- Note
- Document ID: 19890003941.
Accession ID: 89N13312.
NASA, Ames Research Center, Second Workshop on Improvements to Photometry; p 17-33. - Terms of Use and Reproduction
- No Copyright.
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