Focal Pointe Observatory
Astrophotography by Bob Franke

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Veil Nebula


Click the image for a 4.4 arcsec/pixel display (2960 x 2064)

NGC 6992 Eastern Veil... Click the image for a 4.4 arcsec/pixel display (1500 x 1000)

NGC 6960 The Witch's Broom... Click the image for a 4.4 arcsec/pixel display (1200 x 800)

Pickering's Triangle... Click the image for a 4.4 arcsec/pixel display (1200 x 800)


Takahashi FSQ-106ED @ f/5.0 (530 mm F.L.)  Captured at 3.5 arcsec/pixel. 


Paramount ME


SBIG STL-11000 w/ internal filter wheel, AstroDon 6 nm Filters

Acquisition Data

8/18/2008 to 9/7/2008 Chino Valley... with CCDAutoPilot3


Hα    240 min. (8 x 30 min. bin 1x1)
OIII  180 min. (6 x 30 min. bin 1x1)

Hα,OIII & OIII are mapped to RGB respectivly

RGB stars are overlaid


CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin and Noel Carboni's actions.

CCDStack to calibrate, register, normalize, data reject & combine.

PhotoShop for non-linear stretching and the color combine.


North is to the top in the first image.

Although this image was taken with narrow band filters it is a fairly good presentation of what the nebula looks like if red, green and blue filters were used. This is possible because the band width of the OIII filter is about half way between green and blue. This technique works especially well with this nebula because the RGB colors are mostly red and cyan. I used this method because, with true RGB, the stars completely overwhelm the nebula.

These wisps of gas are all that remain visible of a Milky Way star. Many thousands of years ago that star exploded in a supernova leaving the Veil Nebula.  At the time, the expanding cloud was likely as bright as a crescent Moon toward the constellation of Cygnus, visible for weeks to people living at the dawn of recorded history. The remaining supernova remnant lies about 1400 light-years away and covers over five times the size of the full Moon. The bright wisp on the right is known as the Witch's Broom Nebula and can be seen with a small telescope. The Veil Nebula is also known as the Cygnus Loop.
Source:  NASA APOD