NGC 7635 Bubble Nebula deep close-up

Image Title: NGC 7635 Bubble Nebula deep close-up

Date image was taken: September 09, 2023

Location: Amiens, France

Image Description and Details: NGC 7635, or Caldwell 11, is an HII region emission nebula in the constellation Cassiopeia. The "bubble" is created by the stellar wind from the massive hot young central star SAO 20575 . 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.

This image is an heavy crop with Drizzle processing, as the fov is far bigger at my 1000mm focal length. FWHM was very good on a lot of subs, with the best at 1.39" and the highest selectionned at 2", and i am happy with the fine details i was able to get as well as the faint surroundings nebulosities on the 3 layers, thanks to the near 50h exposures, giving nice color shades.

49h30 exposures from my Bortle 6 backyard in Amiens, France.

Sii filter : 152x300s

H filter : 195x300s

Oiii filter : 247x300s

Processed with Pixinsight & Photoshop

Equipment Details: Telescope TOA130

Mounbt EQ6-r

Camera ZWO 2600mm & SHO 3.5nm filters

Copyright: Mathieu GUINOT

Website or Facebook Profile: https://www.astrobin.com/users/Mathieu80/