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Contains:  M 87, NGC 4486, NGC 4478, NGC 4476, NGC 4473, NGC 4461, NGC 4458, NGC 4440, NGC 4438, NGC 4436, The Eyes, NGC 4435, NGC 4431, NGC 4425, NGC 4413, M 86, NGC 4406, NGC 4402, NGC 4388, NGC 4387, IC 3311, M 84, NGC 4374
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Markarian's Chain and M87 (Reloaded :) )

Technical card

Resolution: 3248x2451

Dates:Jan. 27, 2018Jan. 28, 2018Feb. 11, 2018Feb. 17, 2018

Frames:
Astronomik Deep-Sky B Filter: 1x600" bin 1x1
Astronomik Deep-Sky G Filter: 7x600" bin 1x1
Astronomik Deep-Sky R Filter: 12x600" bin 1x1
Astronomik L2 Lum: 19x600" bin 1x1

Integration: 6.5 hours

Avg. Moon age: 12.12 days

Avg. Moon phase: 45.88%

Astrometry.net job: 1936135

RA center: 186.947 degrees

DEC center: 12.874 degrees

Pixel scale: 1.857 arcsec/pixel

Orientation: 1.182 degrees

Field radius: 1.049 degrees

Locations: Image The Universe Remote Telescopes, Fregenal de la Sierra, Extremadura, Spain

Description

Reloaded after last nights data loss

Always found this area very challenging to process - so, being impatient I thought I would have a go with a partial data set, not the best logic!! However, the trump came up trumps and delivered the photons required :)
On previous attempts, I have found the background is quite difficult to 'make nice'. So here I used the Lum element of the RGB frames and applied back to a processed lum frame background. Results are quite pleasing - A four pane mosaic will follow of the extended area out to M89 and the two panes below as soon as I can find the time.

Comments

Author

patrickgilliland
Paddy Gilliland
License: None (All rights reserved)
104918
Like

Revisions

B

A few minor tweaks

Sky plot

Sky plot

Histogram

Markarian's Chain and M87 (Reloaded :) ), 





    
        

            Paddy Gilliland