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M52 is a bright, rich open cluster located about 5000 light-years from our solar system and is visible in small telescopes. NGC 7635 is also known as the Bubble Nebula for its bubble-like structure.

Equipment: ST-10XME/Vixen 102-ED/G-11/Gemini/Astrodon RGB filters
F-ratio: f/6.5
Exposure: LRGB: L 8 x 4 minutes, binned 1x1: R 8 x 4 minutes: G 8 x 4 minutes: B 8 x 4 minutes: RGB binned 2x2
Date: September 4, 2005
Location: Landers, California, USA
Technical Notes: Individual exposures were obtained using CCDAutoPilot2 and then sigma combined. The RGB image was created in Registar 1.0. The brighter portions of the luminance image were sharpened with Unsharp Mask at 100% with a radius of 1 pixel and a threshold of 0, while Gaussian Blur of 1.0 pixel was applied to the dimmer portions. The same Gaussian Blur was applied to the RGB image.