Craigar on CN Posted July 30, 2023 Share Posted July 30, 2023 Just bought and installed affinity-photo-2.1.1 and used it to do some layer masking and develop persona for curves VERY Nice! This was captured with an 8 inch SCT telescope in Calabassas, CA over a 2 hour period last month using a Sony IMX294 camera sensor, stacked with DSS. Info about M17 from https://en.wikipedia.org/wiki/Omega_Nebula Quote The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, Lobster Nebula, and the Horseshoe Nebula[1][2] (catalogued as Messier 17 or M17 or NGC 6618) is an H II region in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is by some of the richest starfields of the Milky Way, figuring in the northern two-thirds of Sagittarius. Characteristics The Omega Nebula is between 5,000 and 6,000 light-years from Earth and it spans some 15 light-years in diameter. The cloud of interstellar matter of which this nebula is a part is roughly 40 light-years in diameter and has a mass of 30,000 solar masses.[3] The total mass of the Omega Nebula is an estimated 800 solar masses.[4] It is considered one of the brightest and most massive star-forming regions of our galaxy.[3] Its local geometry is similar to the Orion Nebula except that it is viewed edge-on rather than face-on.[5] The open cluster NGC 6618 lies embedded in the nebulosity and causes the gases of the nebula to shine due to radiation from these hot, young stars; however, the actual number of stars in the nebula is much higher – up to 800, 100 of spectral type earlier than B9, and 9 of spectral type O,[citation needed] plus over a thousand stars in formation on its outer regions.[3] It is also one of the youngest clusters known, with an age of just 1 million years.[6] The luminous blue variable HD 168607, in the south-east part of the nebula, is generally assumed to be associated with it; its close neighbor, the blue hypergiant HD 168625, may be too. The Swan portion of M17, the Omega Nebula in the Sagittarius nebulosity is said to resemble a barber's pole.[7] SureWeb and mrs68tm 2 Quote Link to comment Share on other sites More sharing options...
Craigar on CN Posted July 30, 2023 Author Share Posted July 30, 2023 Installed James Ritson AP macros https://jamesritson.gumroad.com/ very powerful and adjustable Here's the previous M17 composition with JR's "EnhaceNebula" at 60% opacity and "Hue Masked Structure" at 64% strength - working with 16 bit color depth mrs68tm 1 Quote Link to comment Share on other sites More sharing options...
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