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Captured by
RICHARD COFER

Lunar Occultation of Jupiter (Egress)

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Pickering’s Triangular Wisp

Started by Dennis Persyk, 08/17/2005 09:31PM
Posted 08/17/2005 09:31PM Opening Post
Pickering’s Triangular Wisp in the Veil is one of my favorite subjects. Although it looks good in color I prefer the ethereal beauty of simple H-alpha filtration. The whole region is called the Bridal Veil Nebula, and bridal veils are traditionally white – and thus so are my images of this target.

http://home.att.net/~dpersyk/new.htm

The image was taken with a Takahashi E-160 (f/3.3) astrograph aboard an AP-1200GTO. The camera was an SXV-H9, and the exposure was 2 x 20 minutes via a 6 nm FWHM H-a filter. There was a full moon, but light pollution has no affect whatsoever on a narrow-band H-a filter.

Pickering's Wedge, as it is also called, was discovered in 1904 by Williamina Fleming of Harvard College. Fleming was examining photographic plates of the region around 52 Cygni when she noticed a triangular wispy patch of nebulosity. As was the custom of the day, credit for the discovery went to her supervisor, astronomer E. C. Pickering.

Thank you for visiting my site.

Clear skies,

Dennis Persyk
Igloo Observatory Home Page http://dpersyk.home.att.net
Hampshire, IL