Post Ai679c8PCvPzRcz808 by rdm@aus.social
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 (DIR) Post #Ai679c8PCvPzRcz808 by rdm@aus.social
       2024-05-05T03:17:37Z
       
       0 likes, 0 repeats
       
       If you have ever used a star map or application, you would have seen many many objects listed as "NGC(some number)" . But what does that mean? NGC is short for New General Catalogue - or, more properly, "The New General Catalogue of Nebulae and Clusters of Stars". It is a catalogue compiled by John Dreyer in 1888 (yes, "new" is relative), and contains about 7800 objects.You may have also encountered objects listed with an "IC" prefix. These are *also* part of the New General Catalogue - or more precisely the follow-up supplements called "Index Catalogues" - adding another 5400   objects.The NGC (and ICs) are sufficienty important that they have been updated, most recently in 2019, and it now contains nearly 14000 objects.Last night, I imaged one of the IC objects - the Rho Ophiuchi cloud complex, centering on IC4604.This is an amazing and beautiful nebula complex, but it took some post processing to really bring it to life.154x15s@gain 80 #DwarfII . Post processed in #Snapseed and #GooglePhotos . #astronomy #astrophotography #Astrodon