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Messier 48 - an open star cluster in Hydra. According to the Interweb the cluster is 1,500 light years away and is 300 million years old. This is 16 x 600 seconds each (so 10 hours and 40 minutes total) of LRGB shot through the Takahashi FSQ 106 and QSI 683 rig at Deep Sky West. Once the RGB image was assembled, I extracted Luminance and added this to the 'regular' Luminance for a 'Super Luminance'.
The Southern Pinwheel Galaxy ( Messier 83, NGC 5236 ) in the constellation Hydra. Additional sub-images added ( 9 x 3 min @ ISO 200, no filter ) and colour balance tweaked to remove slight yellow/green tinge. The lower ISO and removal of the LP pollution filter has made it easier to bring out the subtle colours in the stars. ( click on image to see fuill size ) Messier 83 is a relatively large and bright spiral galaxy visible from southern and mid latitudes. Clearly visible is the central bar with its bright central bulge as well as multiple dark dust lanes and areas of nebulosity in the sweeping arms. At a distance of 15 Million light years, the Southern Pinwheel Galaxy, whilst close in astronomical terms, is too far away and hence way too small for my backyard telescope to resolve individual stars; so all of the stars that can be seen are in fact in the near foreground of the image and reside, like us, in the Milkyway Galaxy. Much harder to see are the many far more distant galaxies that look like tiny fuzzy stars in the image. The easiest of which are PGC 724536 and PGC 48132 that appear close together in the centre of the image just to the right of Messier 83. Both are edge on and look like tiny flying saucers. Details: Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2 software. Nikon D5300 (unmodified) 14bit NEF, Long Exp. NR on. 25 June 2016 - Hutech IDAS D1 filter, 17 x 4 min @ ISO 400 28 June 2016 - no filter, 9 x 3 min @ ISO 200 Pixinsight and photoshop. Links: https://500px.com/mikeoday http://photo.net/photos/MikeODay Edited June 27 by mike005