CCD OBSERVATIONS OF SUPERNOVA REMNANTS

The high quantum efficiency of CCD detectors makes it possible to study faint features in supernova remnants that are only barely detectable on the longest photographic exposures. The advantage ofthe CCD over the photographic plate is particularly striking in the near infrared where photographic emu...

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Bibliographic Details
Published in:Publications of the Astronomical Society of the Pacific 1986-04, Vol.98 (602), p.448-452
Main Authors: VAN DEN BERGH, SIDNEY, PRITCHET, CHRISTOPHER J.
Format: Article
Language:English
Subjects:
Astronomy
Crabs
Earth, ocean, space
Exact sciences and technology
Interstellar medium (ism) and nebulae in milky way
Knots
Nebulae
Observational astronomy
Observational research
Pulsars
Stellar systems. Galactic and extragalactic objects and systems. The universe
String
Supernova remnants
Telescopes
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Summary:The high quantum efficiency of CCD detectors makes it possible to study faint features in supernova remnants that are only barely detectable on the longest photographic exposures. The advantage ofthe CCD over the photographic plate is particularly striking in the near infrared where photographic emulsions are inefficient and where interstellar absorption is much reduced. The fine seeing in Hawaii allows study of much finer detail than was previously possible at other sites. Observations ofthe Crab nebula in sub-arc-second seeing show that the Ha filaments in this object consist of chains of stellar or quasi-stellar knots with diameters ≤ 1.0 arc sec (0.01 pc).
ISSN:0004-6280
1538-3873
DOI:10.1086/131774