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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
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Animated overlay of objects in Markarian’s Chain., 


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

Technical card

Integration: 0.0 hours

Basic astrometry details job: 746903

RA center: 12h 26' 51"

DEC center: +12° 46' 48"

Pixel scale: 1.290 arcsec/pixel

Orientation: -148.553 degrees

Field radius: 0.754 degrees

Resolution: 3358x2536

Locations: Sierra Remote Observatories, Shaver Lake, CA, United States


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.



License: None (All rights reserved)

Sky plot

Sky plot


Animated overlay of objects in Markarian’s Chain.,