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CCD Imaging of Planetary Nebula Halos

Published online by Cambridge University Press:  07 August 2017

K.B. Kwitter ,
Y.-H. Chu  and
R.A. Downes
K.B. Kwitter
Affiliation:
Astronomy Dept., Williams College, Williamstown, MA 01267 USA
Y.-H. Chu
Affiliation:
Astronomy Dept., University of Illinois, Urbana, IL 61821 USA
R.A. Downes
Affiliation:
Space Telescope Science Institute, Baltimore, MD 21218 USA

Extract

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We have obtained deep CCD images of 14 PN to search for and examine faint halos. These images were obtained with Hβ, [OIII], Hα, and [NII] narrowband interference filters on the Burrell Schmidt at Kitt Peak. Table 1 summarizes the observations. We have found interesting features around NGC 1360, NGC 3587 (The Owl), and NGC 6853 (The Dumbbell), and we have obtained new images of the very faint outer halo of NGC 7293 (The Helix). Two CCDs were used: TI6, an 800×800 chip, with 1.45″ /pix and a 19.3 arcmin square field., and ST2K, a 2048×2048 chip, of which only 1200×1200 pixels were read out, yielding 2.07″ /pix and a 40 arcmin square field.

Type
III. Highlights on the Nebulae
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 209
Copyright
Copyright © Kluwer 1993 

References

Kwitter, K.B., Downes, R.A., and Chu, Y.-H. 1991, “Schmidt CCD Images of the Dumbbell Nebula (NGC 6853),” Google Scholar
Bulletin of the A.A.S., 23, 914.Google Scholar
Kwitter, K.B., Chu, Y.-H., and Downes, R.A. 1992, “A Study of Planetary Nebula Halos,” in preparation.CrossRefGoogle Scholar
Malin, D.F. 1982, “A Look at Some Unstable Stars,” Sky and Telescope, 63, 22.Google Scholar