Click on the image for a higher-resolution version.
Object Type: Spiral
Size: 11' x 4'
NGC 7331 is an impressive
sight in moderate to large telescopes. Above it in this image are three fainter galaxies
(left to right), NGC 7337, 7340, and NGC 7335, which form a triangle. To the right of NGC
7335 is the very small and faint galaxy NCG 7336. On the lower left of the image is a
group of five galaxies known as Stephan's Quintet.
102-ED/Losmandy G-11/Gemini/Astrodon RGB filters
Exposure: LRGB: L 8 x 5 minutes, binned 1x1: R 8 x 5 minutes:
G 8 x 5 minutes: B 8 x 5 minutes: RGB binned 2x2
Date: October 28, 2005
Location: Landers, California, USA
Technical Notes: Exposures were acquired using CCDAutoPilot2 and
then sigma combined. The RGB images were combined in Registar 1.0. Unsharp Mask was
selectively applied to the brightest portions of the luminance image at 100% with a radius
of 1 pixel and a threshold of 0 and then repeated. A Gaussian Blur of 1 pixel was applied
to the dim portions of the luminance image and to the RGB image.