Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  M 53  ·  NGC 5024  ·  NGC 5053
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M53 and NGC5053, 


            Drew Evans
M53 and NGC5053
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M53 and NGC5053

Getting plate-solving status, please wait...
M53 and NGC5053, 


            Drew Evans
M53 and NGC5053
Powered byPixInsight

M53 and NGC5053

Technical card

Imaging telescopes or lenses: William Optics Gran Turismo 81 APO

Imaging cameras: ZWO ASI 2600 MC Pro

Mounts: Celestron CGX-L

Guiding cameras: ZWO ASI290MM Mini (mono)

Software: PixInsight  ·  AstroPixel Processor  ·  Lightroom CC

Filters: Baader Moon and Skyglow 2"

Accessory: ZWO OAG M48  ·  ZWO EAF Electronic Auto Focuser

Dates:April 17, 2021

Frames: 46x300" (3h 50')

Integration: 3h 50'

Avg. Moon age: 4.82 days

Avg. Moon phase: 24.09%

Basic astrometry details

Astrometry.net job: 4440141

RA center: 13h 14' 39"

DEC center: +17° 56' 20"

Pixel scale: 1.621 arcsec/pixel

Orientation: 108.979 degrees

Field radius: 0.759 degrees

Resolution: 2544x2213

Locations: Home, Flagstaff, Arizona, United States

Data source: Backyard


M53 & NGC 5053 in the constellation Coma Berenices

I rarely image star clusters, but with first light on my new GT81, I thought this double globular cluster area would make a good subject to test flat field optics on. This area of sky is riddled with a few clusters and it matched up nicely with the square sensor of the ZWO ASI533MC Pro.

M53 (top right) lies about 58,000 light-years from our Solar System. Like most other globular clusters, it orbits the Milky Way a great distance from the galactic plane, in this case about 60,000 light-years from our galaxy's core. Given that great distance, it is much less spectacular than the grand master star cluster, M13.

NGC 5053, the second of the two globular clusters in this shot, is about 1 degree (2 Moon Widths) southeast of M53. It is a super-faint and loose globular cluster about 53,500 light-years away from us, which puts it somewhat close to M53. Many astronomers doubted its nature as a globular for a long time.

A lot of faint galaxies are visible in the full size image which I have yet to find classification on.

3.83 hour (46 x 300 seconds) exposure with darks and flats

OTA: William Optics Gran Turismo 81 APO Triplet Refractor 480mm F/5.9

Camera: ZWO ASI533MC Pro

Gain: 100

Filter: 2" Baader Neodymium (Moon & Skyglow)

Cooling Temperature: -10 Celsius

Mount: Celestron CGXL with QHY Polemaster alignment

Guidescope: ZWO OAG with Helical Focuser

Auto-guiding: ZWO ASI290MM Mini

Control: ZWO ASIAIR Pro

Calibrated in Astro Pixel Processor⁣

Processed in Pixinsight and Lightroom

Flagstaff, AZ - Bortle 4 skies


Sky plot

Sky plot


M53 and NGC5053, 


            Drew Evans