A new calibration of the Stobie et al. CCD stellar sequence F117-11

Details A new calibration of the Stobie et al. CCD stellar sequence F117-11 A new calibration of the Stobie et al. CCD stellar sequence F117-11

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...83..109m&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 83, no. 1, April 1990, p. 109-118. Research supported by ZWO

Astronomy and Astrophysics

Astrophysics

3

Astronomical Photometry, Spiral Galaxies, Stellar Spectrophotometry, Broadband, Calibrating, Charge Coupled Devices, Reference Stars, Stellar Magnitude

Scientific paper

A new calibration in BVRI is given for the Stobie et al. (1985) CCD stellar sequence F117-11. These observations were calibrated using Graham's (1981) photoelectric sequence near the spiral galaxy NGC 300. This paper shows that the V magnitude of the standard stars in F117-11 are on average 0.102 + or - 0.010 magnitudes brighter than that given in Stobie et al., which had used magnitude zero point corrections up to 0.1 magnitudes. The usefulness of this new calibration of F117-11 is demonstrated by showing that a good set of color equations for the BVRI filters of the European Southern Observatory Faint Object Spectrograph and Camera on the ESO 3.6-m telescope can be obtained with just 26 minutes of observation time.

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