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Deep Narrow Band Interference Filter Photographs of Selected Extended Planetary Nebulae

Published online by Cambridge University Press:  19 July 2016

M. Rosado  and
M. Moreno
M. Rosado
Affiliation:
Instituto de Astronomía Universidad Nacional Autónoma de México México
M. Moreno
Affiliation:
Instituto de Astronomía Universidad Nacional Autónoma de México México

Abstract

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Narrow-band interference filter photographs in the light of Hα, [S II] (λ = 6717 and 6731 A). [N II] (λ = 6584 A) and [O III] (λ = 4363 A) of four extended PNs are shown. These photographs were obtained with a focal reducer and a single-stage image tube attached to the 2.1 m Cassegrain focus telescope of the Observatorio Astronómico Nacional at San Pedro Mártir, B.C.N. The exposure times were of one hour. For each photograph we have obtained a calibration by means of a step density wedge.

Type
II. Nebular Properties
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 171
Copyright
Copyright © Kluwer 1989 

References

Abell, G.O. 1966, Ap. J., 144, 259.Google Scholar
Dengel, J., Hartl, H., and Weinberger, R. 1980, A.A., 85, 356.Google Scholar
Weinberger, R. and Sabbadin, F. 1981, A.A., 100, 66.Google Scholar