A widefield view of Cassiopeia and Cepheus containing a variety of objects including the Bubble Nebula – lower center aka NGC7635, Shapless-162 or Caldwell 11, which is an HII emission region that contains a bubble structure created by stellar wind from a massive hot star. It is estimated to be anywhere from 7100 to 11,000 lightyears from earth. Another prominent object is the Lobster Claw Nebula or Sharpless-157 on the right side of the frame at about 11,050 lightyears distant. On the left side of the frame is the huge diffuse nebula Sharpless 161 which is studded with the bright nebula NGC7538 sometimes called the Northern Lagoon Nebula or Brain Nebula, (both are about 9100 lightyears distant). Aside from these glowing gas regions there are two prominent star clusters: NGC7510 aka the Dormouse or Arrowhead Cluster and The Cassiopeia Salt and Pepper Cluster (M52, NGC7654). 

The field contains objects from Lynds' Catalogue of Bright Nebulae
- LBN 547
- LBN 543
- LBN 544 
- LBN 548
- LBN 549
- LBN 540
- LBN 533
- LBN 536 
- LBN 537 

Details:
- Acquisition Date: 09/02/2022 to 09/03/2022
- Location: Western Massachusetts USA
- Imaging Camera: QHY600PH-M -10°C - Mode 1(High Gain) Offset:15 Gain:56
- Telescope: Takahashi FSQ106 EDXIII @ f/5 (530mm focal length -106mm aperture)
- Mount: Astro-Physics AP1100 w/GTO4
- Guide scope: Celestron Off Axis Guider
- Guide Camera: ASI174m mini
- Software: Adobe Photoshop CS5, Sequence Generator Pro, PixInsight 1.8 Ripley, Aries Astro Pixel Processor 

Filters used:
- Chroma Hydrogen Alpha (Ha) 3nm 50mm
- Chroma Oxygen III (OIII) 3nm 50mm
- Astrodon Sulfur II (SII) 3nm 50mm

Exposure Times:
-Chroma Hydrogen Alpha: 15 x 600 sec (150 min)
-Chroma Oxygen III:            15 x 600 sec (150 min)
-Astrodon Sulfur II:              15 x 600 sec (150 min)
Total Exposure: 450min. (7.5 hrs.)

Sky Quality:
-Magnitude: 19.71
-Bortle Class 5
-1.41 mcd/m^2 Brightness
-1234.6 ucd/m^2 Artificial Brightness