BUSCA: Simultaneous imaging in 4 optical bands.

Reif, K.; Bagschik, K.; Klink, G.; Kohley, R.; Poschmann, H.; de Boer, K.S.; Mueller, Ph; Mebold, U.; Schmoll, J.; Heber, U.

Abstract

The "Bonn University Simultaneous CAmera" (BUSCA) is a CCD camera system for the CA 2.2.m telescope which allows simultaneous direct imaging of the same area in four colors. It is based on three dichroic beam splitters and four large area detectors (6x6 cm^2). The field of view at the 2.2 m telescope is 12'x12'. BUSCA offers new perspectives for multicolor photometry: i) Color indices in the optical can be determined with high reliability even in non-photometric atmospheric conditions. ii) Precious observing time is used very efficiently. iii) With the large field of view extended objects are covered in a single exposure. iv) Each exposure results in a complete dataset. The dichroics --- plane-parallel glass plates operating at an angle of 45 degrees --- split the optical wavelength range such that standard intermediate-band filter systems (e.g. Stroemgren) can be used. During the commissioning phase the instrument is equipped with four 2k x 2k LORAL CCDs. Three devices will be replaced by (thick) monolithic 4k x 4k, 15\mu CCDs from Lockheed Martin Fairchild Systems. The UV channel will be upgraded to a single thinned 4k x 4k or two thinned 2k x 4k devices depending on availability and funding.

Citation

Reif, K., Bagschik, K., Klink, G., Kohley, R., Poschmann, H., de Boer, K., …Heber, U. (1998). BUSCA: Simultaneous imaging in 4 optical bands. In R. E. Schielicke (Ed.), Astronomische Gesellschaft Meeting Abstracts, Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft at Heidelberg, September 14--19, 1998

• Conference Name: Annual Scientific Meeting of the Astronomische Gesellschaft
• Conference Location: Heidelberg
• Publication Date: 1998-09
• Volume: 14
• Series Title: Abstract series / Astronomische Gesellschaft
• Series ISSN: 0934-4438
• Book Title: Astronomische Gesellschaft Meeting Abstracts, Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft at Heidelberg, September 14--19, 1998
• Public URL: https://durham-repository.worktribe.com/output/1165819
• Publisher URL: http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998AGM....14.P116R&db_key=AST
• Related Public URLs: http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998AGM....14..I06R&db_key=AST
• Additional Information: poster #P116 & talk #I06