MarkS Posted July 31, 2014 Report Share Posted July 31, 2014 I captured these faint galaxies on my first clear night for months. I was testing a new spacer for the f/6.8 configuration on the ASA10N, and there was not much on offer for this set-up. So I targetted IC 4721 without knowing much about it In the event, it was very windy, and the wind increased through the session - so much that the L subs were spoiled somewhat. (The motor currents varied sharply from 0.6A to 1.8A in the gusts) This image is thus a work in progress - it is only 2hr RGB binned X2 - which still gives a reasonable plate scale of 1.3"/px. It awaits a good set of Ls. The integrated magnitudes of these galaxies are 12 -13th. Th brightest stars in the image are around 11 mag. The faint galaxies turned out to be interesting. The largest - IC4721 - is a barred spiral about 90Mly distant, as is the second largest - IC4720. The small jet-like addition to IC 4721 is in fact an elongated elliptical galaxy a further 180Mly distant. ASA10N at f/6.8; DDM60; STT8300M; Astrodon LRGB filters; 8 X 5min subs each colour; FOV of cropped image ~ 24' X 21'. Seeing poor; SQL 20.8; processed in Pixinsight; finished in PS. Link to comment Share on other sites More sharing options...
afesan Posted August 8, 2014 Report Share Posted August 8, 2014 Seems to be a promising work in progress. ¡. I will wait for the ending result ..As you can guess: these galaxies will be consider as little treasures to my eyes.. Not seen ever.... Thanks for showing¡ Antonio Link to comment Share on other sites More sharing options...
MarkS Posted August 24, 2014 Author Report Share Posted August 24, 2014 Thanks Antonio. The final on this must wait a while - my focuser hardware has failed....... Mark Link to comment Share on other sites More sharing options...
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