Bubble Nebula and M52 in Hydrogen Alpha light
First light with QSI 583 camera

This image of the bubble nebula, surrounding area and M52 was taken with the new QSI 583 camera along with a 13nm Astronomik Ha filter during the bright moon period at the end of Sept. (Courtesy of Wikipedia) NGC 7635, also called the Bubble Nebula and Sharpless 162, is a H II region[2] emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7[2] magnitude young central star, the 15 ± 5 M☉[4] SAO 20575 (BD+60 2522).[7] The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.[7] It was discovered in 1787 by Friedrich Wilhelm Herschel.[6] The star SAO 20575 or BD+602522 is thought to have a mass of 10-40 Solar masses.

• Optics : Stellarvue SV 105 Triplet Refractor with a SFF7-21 Field Flattener
• Mount: Mountain Instruments MI-250
• Camera: QSI 583
• Filters: Astronomik 13nm Ha filter
• Exposure: Ha 300min, 20min subs
• Camera/Mount Control: Maxim DL 4.56, CCD Commander
• Location: Stark Bayou Observatory, Ocean Springs, MS
• Date: Sep 09