Contains:M 90, NGC 4569, NGC 4531, M 88, NGC 4501, M 87, NGC 4486, NGC 4477, NGC 4473, NGC 4461, NGC 4459, NGC 4438, The Eyes, NGC 4435, NGC 4425, M 86, NGC 4406, NGC 4402, NGC 4388, M 84, NGC 4374
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Markarian's Chain in LRGB, 




    

        Douglas J Struble
Markarian's Chain in LRGB

Markarian's Chain in LRGB

Technical card

Resolution: 4267x3412

Dates: March 17, 2018March 24, 2018March 25, 2018March 27, 2018

Frames:
Astrnomik CLS-CCD: 821x60" -20C bin 1x1
Astrodon Blue Tru-Balance E-Series Gen 2: 114x60" -20C bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 134x60" -20C bin 1x1
Astrodon Red Tru-Balance E-Series Gen 2: 135x60" -20C bin 1x1

Integration: 20.1 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 13.87 days

Avg. Moon phase: 47.10%

Bortle Dark-Sky Scale: 6.50

Astrometry.net job: 1987499

RA center: 187.711 degrees

DEC center: 13.074 degrees

Pixel scale: 2.316 arcsec/pixel

Orientation: 223.135 degrees

Field radius: 1.758 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Unknown

Description

While my main AP Mach1 mount is in for warranty repair, I am forced to use my portable Celestron AVX mount. Bad time of the year, as I am in small galaxy season here where I am. I tried to make the best of it using my SV70T with reducer in doing the Markarian's Chain in a pretty good wide field revealing a couple other small galaxies. Feel free to zoom in and check 'em out.

Markarian's Chain is a stretch of galaxies that forms part of the Virgo Cluster. When viewed from Earth, the galaxies lie along a smoothly curved line. Charles Messier first discovered two of the galaxies, M84 and M86, in 1781. The other galaxies seen in the chain were first mentioned in John Louis Emil Dreyer's New General Catalogue, published in 1888. It was ultimately named after the Armenian astrophysicist, Benjamin Markarian, who discovered their common motion in the early 1960s. Member galaxies include M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 and NGC 4435.

Comments

Author

dugstruble
Douglas J Struble
License: None (All rights reserved)
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Revisions

  • Markarian's Chain in LRGB, 




    

        Douglas J Struble
    Original
  • Markarian's Chain in LRGB, 




    

        Douglas J Struble
    B
  • Markarian's Chain in LRGB, 




    

        Douglas J Struble
    C
  • Markarian's Chain in LRGB, 




    

        Douglas J Struble
    D
  • Final
    Markarian's Chain in LRGB, 




    

        Douglas J Struble
    E

E

Had to get rid of some magenta stars. The red was taken on a different night with different seeing than blur and green.

Sky plot

Sky plot

Histogram

Markarian's Chain in LRGB, 




    

        Douglas J Struble