Celestial hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  IC 3303  ·  IC 3355  ·  IC 3393  ·  M 84  ·  M 86  ·  NGC 4374  ·  NGC 4387  ·  NGC 4388  ·  NGC 4402  ·  NGC 4406  ·  NGC 4413  ·  NGC 4425  ·  NGC 4431  ·  NGC 4435  ·  NGC 4436  ·  NGC 4438  ·  NGC 4440  ·  The Eyes
Animated overlay of objects in Markarian’s Chain., samlising
Animated overlay of objects in Markarian’s Chain.
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Animated overlay of objects in Markarian’s Chain.

Animated overlay of objects in Markarian’s Chain., samlising
Animated overlay of objects in Markarian’s Chain.
Powered byPixInsight

Animated overlay of objects in Markarian’s Chain.

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Description

I discovered a script in Pixinsight that I found to be extremely interesting. It is the Annotate Image script that allows you to annotate a plate solved image with objects from several different catalogs. With this particular image I wanted to understand how many galaxies were in the frame. To my surprise, most of the objects in this image are galaxies - approximately 3791. I used the PGC, NGC and SDSS catalogs in my search with a limiting magnitude of 21!

In this gif animation I’ve overlaid the results from the annotate image script. Another great feature about this script is that ic can also output a CSV file with a listing of all the objects it finds along with x/y coordinates, ra/dec coordinates and in the case of SDSS searches it will also list the magnitude of the objects. I didn’t include the object name of the SDSS objects as it would have rendered this image illegible.

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Sky plot

Sky plot

Histogram

Animated overlay of objects in Markarian’s Chain., samlising