NGC 7635 – Bubble Nebula (SHO)

NGC 7635, the Bubble Nebula, is an emission nebula in Cassiopeia located about 7,100 light years from Earth discovered in 1787 by William Herschel. The bubble is created by the stellar wind from the massive central star SAO 20575. It is located near a large molecular cloud that glows due to the high amount of ionizing radiation given off by the star.

  • Date – 29-30 September, 13/17/18 October 2018
  • Location – Backyard
  • Telescope – Meade 8″ LX50 @ f/6.3 (1260mm focal length)
  • Camera – ASI1600MM-C @ -10C
  • Guiding – Orion Starshoot Autoguider / Orion 50mm guide scope
  • Mount – Orion Atlas Pro AZ/EQ-G
  • Pixel Scale – 0.62″/pixel
  • Exposures (Gain 200, Offset 50)
    • Ha: 28x300s
    • OIII: 166x120s
    • SII: 55x300s
    • Total integration: 12.45 hours
  • Processing – PixInsight
 


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