Bubble Nebula NGC 7635 & Open Star Cluster M52 - Astrophography NGC 7635 Bubble Nebula

The Bubble Nebula NGC 7635 & Open Star Cluster M52

The Bubble Nebula NGC 7635, Open Star Cluster M52 and NGC 7538 . Taken with 80mm telescope — The Bubble Nebula NGC 7635, Open Star Cluster M52 and NGC 7538

Telescope / Lens	TMB 80mm Refractor fl/384mm
Mount Type	Astro-Physics 1200
Camera	SBIG ST10xme cfw9
Filters	Ha, LRGB Astrodon
Film	CCD
Exposure	190 minutes Ha,LRGB
Processing	CCDStack, Photoshop CS2 & Picture Wind Pro
Date	Images taken 09/05/2008
Location	June Mountain 122° 43.528′ W, 43° 48.407′ N 22 miles S of Dexter, Oregon
Conditions	3232′ clear calm skies magnitude 6

The Bubble Nebula NGC 7635 is also known as Caldwell 11. This is an emission nebula in the constellation of Cassiopeia. The Bubble nebula was created from a massive young central star, because it is very hot, it has created a stellar wind. As a result, this stellar wind has formed a “Bubble. Surrounding the nebula is a massive molecular cloud with dark clumps that consequently form new stars as the material condenses. The Bubble nebula NGC 7635, has a diameter of 7-9 light years and lies approximately 8,000 light years from earth.

M52 is located just above and to the left. Open Star Cluster M52 (NGC 7654) is located in the Northern portion of the constellation Cassiopeia. It is 19 light years in diameter, at a distance of 5,000 light years from earth

NGC 7538 is another nebula to the right of the Bubble nebula. NGC 7538 is 9,100 light years away and reside in the Constellation Cepheus. The largest protostar discovered so far is forming here. This protostar is 300 times the size of our solar system. This nebula is also a very active star forming region.

A narrow band Ha filter was used to help capture the nebulosity made up of primarily Hydrogen. LRGB filters were also used in a SBIG ST10XME CCD through a TMB 80mm f/6 refractor & TeleVue 0.08 field flattner/reducer.

NGC 7635 Taken with TEC 140 f/7

7/31/2011 12:10-5:00 AM PST Latitude: 44° 2’ 07.73” North Longitude: 120° 50’ 43.21” West; 3855 ft. Juniper Acres, 30 miles East of Bend, OR **Seeing:** E **Transparency:** 6 **SQM**: 21.65 **Telescopes / Optics:** TEC 140mm f/7 **Mount:** AP1200 **Camera:** SBIG ST10xme CCD & CFW10 **FOV:** 48’ x 32’ **FWHM:** 2.7 **Filter:** Astrodon LRGB series E Gen. 2 (Ha 9nm used for Luminance) **Information:** NGC 7625 (Bubble Nebula) Captured with CCDSoft; RGB=5 x 5 minute; L (Ha 9nm)= 8x 15 minute -20°c. Total L(Ha)RGB= 195 minutes (3+ hours) Processed with CCDStack2, Photoshop CS6

NGC 7635 Taken with TEC 140 f/7 Crop

NGC 7635 Bubble Nebula — 7/31/2011 12:10-5:00 AM PST

This is an emission nebula in the constellation Cassiopeia. This nebula is rich in H2 and birthing place of stars. The massive molecular cloud is created by a stellar wind storm from a young central star that is massive and hot. The bubble itself is itself excited by a hot central star. It was discovered by William Herschel in 1787.