This is an image of the California Nebula (NGC 1499, LBN 756, Sh2-220) central area. It also encompasses part of the large area of nebulosity (LBN 752 - faintest LBN class) which is about twice as large as NGC 1499. The California Nebula's emission is energized by Menkhib (Xi Persei). It is not in the image but located out of frame in the lower right of the image. This image is a modified HOO with RGB stars. Its about 11 hours of total exposure.
in the vicinity are dark nebulae LDN 1462, 1463, 1464 and the small molecular cloud PGCC G159-12.31. Interestingly, the galaxy, IC 2005, shines through the emission glow of NGC 1499. It is part of a three member galaxy group, HDC 259 - all three members are visible in the image. I would not have these in the image if it wasn't for the RGB data - they are overwhelmed and hardly seen in the narrow band data.
Image and details can be accessed at the link below (or by clicking on the California Nebula thumbnail below). The annotated image has a link below but it can also be accessed from the main image webpage as well. The full FOV image can be accessed from the image webpage and has an image scale of 1.82 arcsec/pixel.
California Nebula Annotated
Scope: FSQ-106N at f/5
Camera: ASI1600M (Astronomik Gen 2 Ha, OIII, RGB Filters)
Location: DAA Observatory, Shelter Valley, CA