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H II Regions in NGC 628, NGC 4254 and NGC 5194

Published online by Cambridge University Press:  14 August 2015

K. Chuvaev  and
I. Pronik
K. Chuvaev
Affiliation:
Crimean Astrophysical Observatory, Nauchny, Crimea, U.S.S.R.
I. Pronik
Affiliation:
Crimean Astrophysical Observatory, Nauchny, Crimea, U.S.S.R.

Extract

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Multicolour observations of galaxies are being carried out at the prime focus of the 2.6 m Schajn telescope using an image converter and 6–9 colour filters. The effective wavelengths are approximately 3600, 3730, 4400, 4680, 5090, 5280, 6090, 6600 and 7400 Å. The filters for 3730, 5090 and 6600 Å are centred on emission lines. For absolute calibration extrafocal star images are used.

Type
Part I/Spiral Structure in Galaxies
Information
Symposium - International Astronomical Union , Volume 38: The Spiral Structure of our Galaxy , 1970 , pp. 83 - 86
Copyright
Copyright © Reidel 1970