Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  IC 4263  ·  M 51  ·  NGC 5169  ·  NGC 5194  ·  NGC 5195  ·  NGC 5198  ·  Whirlpool Galaxy
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M51 - The Whirlpool Galaxy, 



    
        

            Drew Evans
M51 - The Whirlpool Galaxy
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M51 - The Whirlpool Galaxy

Getting plate-solving status, please wait...
M51 - The Whirlpool Galaxy, 



    
        

            Drew Evans
M51 - The Whirlpool Galaxy
Powered byPixInsight

M51 - The Whirlpool Galaxy

Technical card

Imaging telescopes or lenses: Explore Scientific ED 152CF

Imaging cameras: ZWO ASI 2600MM Pro

Mounts: Celestron CGX-L

Guiding cameras: ZWO ASI174 Mini

Focal reducers: Explore Scientific 3" 0.7x Focal Reducer Corrector

Software: PixInsight  ·  AstroPixel Processor  ·  Lightroom CC

Filters: Astronomik RGB Deep Sky 2"  ·  Astronomik Ha 2" 12nm  ·  Astronomik L3 2"

Accessory: ZWO EFW 2" 7 Position  ·  ZWO OAG M68


Dates:April 20, 2021

Frames: 175x600" (29h 10')

Integration: 29h 10'

Avg. Moon age: 7.60 days

Avg. Moon phase: 52.28%


Basic astrometry details

Astrometry.net job: 4440128

RA center: 13h 30' 1"

DEC center: +47° 14' 6"

Pixel scale: 0.905 arcsec/pixel

Orientation: 91.199 degrees

Field radius: 0.919 degrees


Resolution: 6166x3925

Locations: Home, Flagstaff, Arizona, United States

Data source: Backyard

Description

M51 - THE WHIRLPOOL GALAXY
Copyright: Drew Evans
Note: full resolution versions here - https://www.dropbox.com/sh/fupdexrvt3cidxb/AAD6z2XS3zdAHB6L4d0Oebjta?dl=0

The Whirlpool Galaxy is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy.
It's companion galaxy, NGC 5195, (seen to the left) is being ripped apart by the huge gravitational disturbance of M51.

The distance of M51 is estimated to be about 37 million light years. The diameter is approximately 100,000 light years and the total mass is estimated to be the equivalent of 160 billion suns.

M51 can easily observed with binoculars in darker skies.

OTA: Explore Scientific ED152 Air-Spaced Triplet with 3" Field Flattener .7x Focal Reducer, 851mm focal length⁣ f/5.6
Mount: Celestron CGX-L
Camera: ZWO ASI2600MM Pro
Gain: 100
Cooling Temperature: -10 Celsius
Auto-guiding: ZWO ASI174MM Mini and ZWO M68 OAG
Control: ZWO ASIAIR Pro
Filters: 2" Astronomik L3, RGB (CCD), Ha (12nm)

Acquisition:
L 51 x 180s = 2.55 hours
R 31 x 300s = 2.58 hours
G 30 x 300s = 2.5 hours
B 30 x 300s = 2.5 hours
Ha 37 x 600s = 6.2 hours
16.33 hours total over 3 evenings in April 2021

Flagstaff, AZ - Bortle 4 skies
Calibrated in Astro Pixel Processor⁣ with darks and flats
Processed in Pixinsight and Lightroom

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M51 - The Whirlpool Galaxy, 



    
        

            Drew Evans