Markarian’s Chain

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Markarian’s Chain is a striking, gently curving string of galaxies located in the heart of the Virgo Cluster, the nearest large galaxy cluster to the Milky Way. Seen from Earth, these galaxies appear linked together in a smooth arc, creating one of the most recognizable and photogenic groupings in the night sky.

The chain is dominated by large elliptical and lenticular galaxies, including Messier 84 and Messier 86, along with several fainter companions. Although they appear neatly aligned from our perspective, the galaxies are not physically connected in a straight line; instead, they lie at varying distances within the dense core of the Virgo Cluster. Their apparent alignment is a beautiful example of cosmic perspective.

Markarian’s Chain lies about 50–60 million light-years away and is shaped by the intense gravitational interactions common in galaxy clusters. Many of its members show evidence of past encounters, such as distorted shapes, extended halos, and stripped gas. These interactions play a key role in the evolution of cluster galaxies, often suppressing star formation and transforming spiral galaxies into smoother, more featureless ellipticals.

For amateur astronomers, Markarian’s Chain is a favorite springtime target in the Northern Hemisphere. Under dark skies, it can be traced visually through moderate-sized telescopes, while astrophotographers prize it for the way dozens of galaxies can be captured together in a single wide-field image—offering a vivid glimpse into the crowded, dynamic environment of a galaxy cluster.


Technical Details

Telescope: Sky-Watcher Esprit 100ED Refractor

Auto Focus: ZWO Electronic Auto Focuser

Astronomy Camera: ZWO ASI071MC Pro

Filter: Optolong UV-IR  cut filter; 2,400 exposures @ 60 seconds each (40 hours)

Total Integration Time: 40 hours


Auto Guiding Software: PHD2

Auto Guiding: William Optics Uniguide 50 Guide Scope

Auto Guiding Camera: ZWO ASI20MM Mini Guide Camera

Telescope Mount: Celestron CGX Equatorial Mount

Telescope Computer: BeeLink GK-55 Mini PC / Windows 10 Pro

Wireless Communication: GL-iNEt Beryl Travel Router


Telescope Control & Image Capture Software: Nighttime Imaging ‘N’ Astronomy (N.I.N.A.)

Image Integration Software: Astro Pixel Process, by Aries Productions

Image Post Processing Software:  PixInsight, by Pleiades Astrophoto


Images captured in Eastern Mojave Desert April 2023. Dark sky classification = Rural sky (Bortle 6)

 

 

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