Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  IC 3943  ·  IC 3946  ·  IC 3947  ·  IC 3949  ·  IC 3955  ·  IC 3959  ·  IC 3963  ·  IC 3973  ·  IC 3976  ·  IC 4040  ·  IC 4042  ·  IC 4045  ·  IC 4051  ·  NGC 4850  ·  NGC 4854  ·  NGC 4860  ·  NGC 4864  ·  NGC 4865  ·  NGC 4869  ·  NGC 4871  ·  NGC 4872  ·  NGC 4873  ·  NGC 4874  ·  NGC 4883  ·  NGC 4886  ·  NGC 4889  ·  NGC 4895  ·  NGC 4898  ·  NGC 4906  ·  NGC 4907  ·  And 5 more.
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Going deep into the Coma cluster of galaxies, 



    
        

            Volker Gutsmann
Going deep into the Coma cluster of galaxies
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Going deep into the Coma cluster of galaxies

Getting plate-solving status, please wait...
Going deep into the Coma cluster of galaxies, 



    
        

            Volker Gutsmann
Going deep into the Coma cluster of galaxies
Powered byPixInsight

Going deep into the Coma cluster of galaxies

Technical card

Imaging telescopes or lenses: Skywatcher Explorer 190 DS-PRO MN

Imaging cameras: ZWO Optical ASI1600MM Pro

Mounts: Skywatcher EQ 6 Syn Scan

Software: Pleiades Astrophoto PixInisight 1.8.8-5 Ripley (x64)  ·  N.I.N.A.  ·  Lightroom 5

Filters: Baader LRGB 36 mm


Dates:April 26, 2020

Frames:
Baader RGB 36mm: 120x120" (4h) (gain: 139.00) bin 1x1
L: 300x180" (15h) (gain: 139.00) bin 1x1

Integration: 19h

Avg. Moon age: 3.12 days

Avg. Moon phase: 10.59%

Bortle Dark-Sky Scale: 6.00


Basic astrometry details

Astrometry.net job: 3469047

RA center: 12h59m56s

DEC center: +27°5707

Pixel scale: 0.785 arcsec/pixel

Orientation: 194.435 degrees

Field radius: 0.460 degrees


Resolution: 3387x2513

Locations: Backyard, Langenfeld, NRW, Germany

Data source: Traveller

Description

In 1995, the Hubble Space telescope was pointed “at nothing” for over 100h. Although this was seen as a waste of time initially, it created one of the most famous images – the Hubble Deep Field. Here a link to an article about the story.

I do not have access to Hubble, and will not spend 100 hours imaging - the closest I can go to create my own personal “Deep Field” is to go as deep as possible into a tiny expanse in the constellation Coma Berenices. There you can find an area that is literally littered with galaxies: The Coma Cluster of Galaxies, a group of more than 1,000 galaxies located at an average distance of about 320 million light years.

Galaxies in this super cluster contain mostly elliptical, more or less featureless galaxies. Fascinating for me is not the beauty of the galaxies but the sheer number of them in an image taken with a modest 8” amateur telescope on a bortle 6-7 sky … Please take time to zoom into full resolution. The annotated version B puts labels to roughly 300 galaxies, some are visible and not annotated. The weaker ones should be around 18-19 mag.

15 hours of luminance and 4 hours of RGB went into this image.

300 x 180s L

120 x 120s RGB

CS,

Volker

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    Going deep into the Coma cluster of galaxies, 



    
        

            Volker Gutsmann
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            Volker Gutsmann
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Going deep into the Coma cluster of galaxies, 



    
        

            Volker Gutsmann