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Contains:  IC 3303, IC 3355, IC 3393, M 84, M 86, NGC 4374, NGC 4387, NGC 4388, NGC 4402, NGC 4406, NGC 4413, NGC 4425, NGC 4431, NGC 4435, NGC 4436, NGC 4438, NGC 4440, The Eyes
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The Eyes of Markarian’s Chain , 



    
        

            samlising
The Eyes of Markarian’s Chain
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The Eyes of Markarian’s Chain

Technical card


Dates:May 20, 2015

Frames:
Baader Planetarium B 36mm: 20x900" bin 1x1
Baader Planetarium G 36mm: 20x900" bin 1x1
Baader Planetarium L 36mm: 32x900" bin 1x1
Baader Planetarium R 36mm: 20x900" bin 1x1

Integration: 23.0 hours

Avg. Moon age: 2.46 days

Avg. Moon phase: 6.67%


Basic astrometry details

Astrometry.net job: 747399

RA center: 12h 26' 51"

DEC center: +12° 46' 48"

Orientation: -148.552 degrees

Field radius: 0.754 degrees


Resolution: 3358x2536

Locations: Sierra Remote Observatories, Shaver Lake, CA, United States

Description

It’s been a long time since I posted anything. Some equipment problems kept me from getting enough time to process anything for the last couple of months. I’m still playing catchup with images taken in May. This image was especially interesting to me because of the amount of galaxies that can be detected in this region. Besides the obvious galaxies visible in Markarian’s Chain, I was surprised by all the distant galaxies in the background. With a plate solve and catalog match I was able to identify approximately 3791 galaxies visible in this image with a limiting factor of magnitude 21. This astounded me and as a goal I wanted to make sure that I would keep as many of these galaxies visible during the processing of the image. It was a bit more difficult than I thought. Keeping the very faint signal of those distant galaxies and still capture detail in NGC4435 and NGC4438 (The Eyes) required very subtle and a numerous amount of masks. In the end, I’m quite happy with the results.

If your interested please take a look at the other post I made of this image with an annotated overlay showing all the galaxies found in my catalog search.

http://www.astrobin.com/204805/

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samlising
samlising
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The Eyes of Markarian’s Chain , 



    
        

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