Imaging telescope or lens: William Optics GTF 81 Five Element APO
Imaging camera: QHYCCD QHY9Ms
Mount: Orion Atlas EQ-G
Guiding camera: ZWO ASI120MM
Integration: 4.0 hours
Avg. Moon age: 10.62 days
Avg. Moon phase: 2.80%
Bortle Dark-Sky Scale: 4.83
Astrometry.net job: 1141055
RA center: 186.883 degrees
DEC center: 13.164 degrees
Pixel scale: 2.040 arcsec/pixel
Orientation: -177.599 degrees
Field radius: 1.140 degrees
Locations: Home, Lake St Louis, Missouri (MO), United States; Danville Conservation Area, New Florence, Missouri, United States
Markarian's chain of galaxies in Virgo was discovered in the 1960's by Armenian astronomer Benjamin Markarian. There are at least seven members of the chain that move together and are part of the Virgo Cluster. In the spring, our night sky faces away from the plane of our Milky Way, allowing observers to easily view outside our stellar neighborhood and into the vastness of deep space.
In the center of the image, NGC 4435 & NGC 4438 are commonly known as The Eyes. The two galaxies, about 52 million light-years away, appear to have had a interacted millions of years ago, perhaps leading to the creation of the smaller NGC 4435.
Messier objects M84 & M86 dominate the lower right part of the chain. The only two galaxies in the chain to be included in Charles Messier's famous list, they are both elliptical galaxies between 52 and 60 million light-years away. The pair are surrounded by NGC 4388, NGC 4425, NGC 4438, NGC 4435, and NGC 4402. Smaller galaxies, IC 3303, NGC 4387, NGC 4413, and IC 3355 are all clearly visible.
In the upper right, past the Eyes, lie NGC 4461, NGC 4458, NGC 4473, NGC 4477, and NGC 4479.
The field is also filled with dozens of smaller galaxies, most no more than a faint smudge.
Imaged on 6/4/16 from New Florence, MO and 6/5/16 & 6/7/16 from Lake St Louis, MO
Integration: 4 hours (LRGB)
Luminance: 12x600s @ 1x1 (120')
R/G/B: 8/8/8 x 300s @ 2x2 (40'/40'/40')
Scope: William Optics GTF 81 5 element refractor (535mm focal length)
Upgraded with Moonlite CF focuser with motor
Imager: QHY9Ms with Olivon OAG and QHYCFW2-s filter wheel
Filters: Baader LRGB
Mount: Orion Atlas EQ-G
Processing and Software
Guiding with PHD2
Acquisition with Sequence Generator Pro
Integration and processing with PixInsight 1.8
Markarian's Chain in Virgo: https://flic.kr/p/JED6fn
Annotated image: https://flic.kr/p/JMtPE4
#VirgoCluster #M86 #M84 #NGC4438 #Virgo #Galaxy #Space #Astronomy #Astrophotography
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