One of my favorite edge on spiral galaxies imaged from Bortle 8 urban skies. This image of NGC4565 was taken under bright skies looking into the brightest part of the light dome of Halifax. Masked stretching and processing the galaxy separate from the stars is still able to pull out a fair amount of detail from a short 57 minute  exposure. I'm going to have to acquire a couple of hours from a dark sky site to really pull out all the detail available in this object.


"NGC 4565 (also known as the Needle Galaxy or Caldwell 38) is an edge-on spiral galaxy about 30 to 50 million light-years away in the constellation Coma Berenices. It lies close to the North Galactic Pole and has a visual magnitude of approximately. It is known as the Needle Galaxy for its narrow profile. First recorded in 1785 by William Herschel, it is a prominent example of an edge-on spiral galaxy." Wikipedia.

Click on the image to see a 100 percent crop of the central area, click again to return to the initial image.

Object NGC4565 RA 12:36:21 Dec +25:59:13
Date 22 March, 2020
Exposure 57 minutes (19 X 3 minutes)
ISO 800
Camera Canon 60Da DSLR
Optics Prime focus of a SkyWatcher f/7 Esprit 120 with a focal length of 840 mm
Location Bedford, Nova Scotia
Processing The processing, including calibration and stacking was done with Images Plus. The basic work flow is detailed here in a paper documenting the workflow used in processing another edge on spiral NGC891.