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On the evening of 9th December 2018 I was able to take 8x 300 second exposures of part of Cygnus to add to my mosaic of the area. Conditions were on a knife edge with intermittent cloud and the target being quite low in the West and likely at any time to disappear behind the tall boundary hedge. This image shows the area to the right of The Crescent Nebula to be full of wispy filaments of gas and of dramatic character. The exposures were taken with a modified Canon 700D DSLR, 12nm Astronomik clip-in filter and 135mm Samyang lens. The mount used was my CG-5. The light frames were taken at ISO 400 and f/2 and stacked with temperature matched dark frames, master flat and bias frames. Stacking was done using Deep Sky Stacker and the resulting master image further processed in StarTools. I was quite taken by how much detail was obtained in just 40 minutes compared to the usual 2 hours spent on images with the same equipment.


© SteveNickolls 2018
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