Hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  IC 3311  ·  M 84  ·  M 86  ·  M 87  ·  NGC 4374  ·  NGC 4388  ·  NGC 4402  ·  NGC 4406  ·  NGC 4407  ·  NGC 4425  ·  NGC 4435  ·  NGC 4436  ·  NGC 4438  ·  NGC 4440  ·  NGC 4461  ·  NGC 4473  ·  NGC 4476  ·  NGC 4478  ·  NGC 4486  ·  NGC 4506  ·  Virgo Galaxy
Getting plate-solving status, please wait...
Markarian's Chain - LRGB, 



    
        

            Jian Yuan Peng
Markarian's Chain - LRGB
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Markarian's Chain - LRGB

Getting plate-solving status, please wait...
Markarian's Chain - LRGB, 



    
        

            Jian Yuan Peng
Markarian's Chain - LRGB
Powered byPixInsight

Markarian's Chain - LRGB

Technical card

Imaging telescopes or lenses: TEC 160FL

Imaging cameras: ZWO ASI6200MM Pro

Mounts: AP1100GTO

Guiding telescopes or lenses: TEC 160FL

Guiding cameras: ZWO ASI290MM Guide Camera

Focal reducers: Tec frc 0.9x Tec frc

Filters: Astrodon Tru-Balance Gen 2 - E-Series LRGB

Accessory: ZWO Off-Axis Guider


Dates:April 12, 2021April 14, 2021April 16, 2021April 19, 2021

Frames:
Astrodon Gen2 Blue: 107x97" (2h 52' 59") (gain: 0.00) -10C bin 1x1
Astrodon Gen2 Green: 97x300" (8h 5') (gain: 0.00) -10C bin 1x1
Astrodon Gen2 Red: 103x300" (8h 35') (gain: 0.00) -10C bin 1x1
Astrodon Gen2E Lum: 141x180" (7h 3') (gain: 0.00) -10C bin 1x1

Integration: 26h 35' 59"

Darks: 32

Flats: 32

Flat darks: 32

Bias: 128

Avg. Moon age: 3.27 days

Avg. Moon phase: 15.99%

Bortle Dark-Sky Scale: 7.00


Basic astrometry details

Astrometry.net job: 4473253

RA center: 12h 28' 4"

DEC center: +12° 50' 16"

Pixel scale: 0.783 arcsec/pixel

Orientation: 0.500 degrees

Field radius: 1.220 degrees


Resolution: 9366x6188

Locations: CourtYard, Palo Alto, CA, United States

Data source: Backyard

Description

Finally, I got one of the most favorite objects for galaxy season this year. This is also the first time for me to process the image containing a lot of small galaxies. It is a good exercise for me to process this type of image,

C & C are welcome. Thanks,

Jian Yuan Peng

-- Faces --

In the early 1960s, Armenian astronomer Benjamin Markarian discovered a stretch of galaxies along a smoothly curved line forming part of the Virgo Cluster when viewed from Earth. The center of the Virgo Cluster is located about 70 million light-years away toward the constellation of Virgo. At least seven galaxies in the chain appear to move coherently. The Virgo Cluster contains over 2,000 galaxies and There are about 100 plus galaxies in this image.

Charles Messier first discovered two of the galaxies, M84 and M86 in 1781 and William Herschel discovered the other galaxies seen in the chain. It was ultimately named after the Armenian astrophysicist, Benjamin Markarian, who discovered their common motion in the early 1960s.

Technical details:

Telescope: TEC 160FL + TEC FRC 0.9x

Mount: Astro-Physics 1100GTO

Imaging cameras: ZWO ASI6200MM

Software: PHD2, PixInsight, Lightroom 6.4, Sequence Generator Pro, Photoshop CS6

PhotometricColorCalibration data:

Resolution ............... 0.783 arcsec/px

Rotation ................. -0.566 deg

Observation start time ... 2021-04-12 05:41:19 UTC

Observation end time ..... 2021-04-20 10:02:59 UTC

Focal distance ........... 990.70 mm

Pixel size ............... 3.76 um

Field of view ............ 2d 2' 12.0" x 1d 20' 44.2"

Image center ............. RA: 12 28 04.332 Dec: +12 50 16.08

Location: Palo Alto, California, USA

Astrodon LRGB Gen2 E-Series Tru-Balance Filter Sets (50mm Unmounted)

Blue 107x300" 8.9 Hours Bin1x1

Green 97x300" 8.1 Hours Bin1x1

Red 103x300" 8.6 Hours Bin1x1

LUM 141x180" 7.1 Hours Bin1x1

Comments

Sky plot

Sky plot

Histogram

Markarian's Chain - LRGB, 



    
        

            Jian Yuan Peng