Celestial hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  IC 3258  ·  M 84  ·  M 86  ·  NGC 4374  ·  NGC 4387  ·  NGC 4388  ·  NGC 4402  ·  NGC 4406  ·  NGC 4407  ·  NGC 4425  ·  NGC 4435  ·  NGC 4438  ·  NGC 4458  ·  NGC 4461  ·  NGC 4473
Markarian's Chain with H-alpha emission of collided galaxies, Patrick Dufour
Markarian's Chain with H-alpha emission of collided galaxies
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Markarian's Chain with H-alpha emission of collided galaxies

Markarian's Chain with H-alpha emission of collided galaxies, Patrick Dufour
Markarian's Chain with H-alpha emission of collided galaxies
Powered byPixInsight

Markarian's Chain with H-alpha emission of collided galaxies

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During a search to learn more about this Virgo galaxy cluster, I came across a research that highlighted the collision of the giant galaxy M86 and its neighbor NGC 4438 (http: //www.astro. yale.edu/kenney/pages/projects.html). On the majority of images taken in color by amateurs, we cannot see this interaction other than by acquiring images in the H-Alpha band. That said, the signal is so weak that even 30-minute exposures barely make a noticeable difference. But clearly, large professional telescopes are able to get this information and I challenged myself to take as many exposures as necessary to bring out the phenomenon. Here is after almost 30 hours of exposures only in H-Alpha spread over a long period given a short presence in the sky of Chile since the month of May.

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Markarian's Chain with H-alpha emission of collided galaxies, Patrick Dufour

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Astroimaging from Chile
Astro-Québec