M52 & Bubble Nebula

Image information:

Date: 09/02/2006
Equipment: SBIG ST2000XM with CFW8a and Astronomik type 2c LRGB filter set through WO ZS105ED telescope on Losmandy GM8 mount. WO ZS105ED working at f5.6 with WO 0.8X reducer/flattener.
Image type: LRGB
Exposure time: 14X4min Luminance binned 1X1, RG&B 6X3min each binned 2X2.

Object information:

Object designations:

  • M52, NGC7654
  • NGC7635, Caldwell 11, Bubble Nebula
Object type:
  • M52 open cluster
  • NGC7635 diffuse emission nebula
Object size:
  • M52 13'
  • NGC7635 15' X 8'
Constellation: Cassiopeia

M52 is a nice open cluster of 193 stars (estimate) in diameter of 19 ly. Distance of the cluster is some 5000 ly. M52 is a beautiful sight for small telescopes and even binoculars.

Bubble Nebula, NGC7635, is a diffuse nebula which appears as a large, faint and diffuse oval. The nebula surrounds an extremely hot and massive star of rare "Wolf-Rayet" type. Ultraviolet radiation from the star causes the gas to glow through a process known as fluorescence, and winds of material blown out from the star give the nebula its characteristic shape. NGC7635 is 7000 ly distant from Earth and has a diameter of 6 ly.

Related images:

List of related images:

Bubble Nebula, OSC, ZWO ASI178MC Cool through AT65EDQ telescope

M52 & Bubble Nebula , OSC, Moravian C1+ 12000A through APM/LZOS 105/650 APO telescope