Stacks Image 200

M31 in a different light

About this object

This image of the famous Great Andromeda galaxy was done using a 3nm Hydrogen Alpha filter. The image shows emission nebula encircling the galaxy and also hydrogen emission around the core of the galaxy which is typically very hard to see. This image was produced by taking 10hrs worth of data through the very narrow 3nm filter and also 6hrs worth of data through a red continuum filter. The red continuum data was subtracted from the Ha data removing the continuum emission and the stars. This leaves mainly Hydrogen Alpha light.

Image Details

  • Optics : Stellarvue SV80ST2 Triplet Refractor
  • Mount: Mountain Instruments MI-250
  • Camera: QSI 583
  • Filters: Astro Don 3nm Ha filter, 5nm Red Continuum filter
  • Exposure: Ha: 10hrs in 30min sub-exposures, Red Continuum: 6hrs in 30min sub-exposures
  • Camera/Mount Control: Maxim DL 4.56, CCD Commander
  • Location: Stark Bayou Observatory, Ocean Springs, MS
  • Date: Dec 2010
Stacks Image 201
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