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Showing results for tags 'messier 57'.
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Messier 57 is is just coming into a position for a decent look around 11 30 pm. IT is a colourful object and I thought it would give me a good target with which to practice my colour developing in PS/Lightroom. I have read so much about how to produce a LRGB image from the four stacked/calibrated luminance, red, blue and green images, a lot seems contradicatory and some, when followed, gave me colour yes, but not as we know it. I am sure a fair chunk must be put down to me. Anyway, I now have a work flow which gives me colour, sometimes resembling what other people have obtained. Progess of sorts. This images is based on 114s subs at gain 139, offset 21. L 39, R 20, G 20, B 19 Calibrated and stacked in DSS (flats, dark flats and darks) Messier 57 Ring Nebula in Lyra NASA: M57, or the Ring Nebula, is a planetary nebula, the glowing remains of a sun-like star. The tiny white dot in the centre of the nebula is the star’s hot core, called a white dwarf. M57 is about 2,000 light-years away in the constellation Lyra, and is best observed during August. Discovered by the French astronomer Antoine Darquier de Pellepoix in 1779, the Ring Nebula has an apparent magnitude of 8.8 and can be spotted with moderately sized telescopes. Equipment: Celestron 9.25 XLT at F10, Skywatcher EQ6 Pro GEM, ZWO 1600MM Pro, ZWO EFW with ZWO LRGB filters, QHY5IIC guide camera on Skywatcher 9 x 50 finderscope, Celestron Focus Motor Software: Ascom 6, Eqmod, Cartes du Ciel, AstroPhotography Tool, PHD2
A prime focus RGB image of the ring nebula M57. I had hoped for a better result but I seemed to have focus issues all night. If I really stretched the luminescence sub-frames I started to pickup details of the nearby faint spiral galaxy IC1296. For more detail the astrobin link is: http://www.astrobin.com/267930
The Ring Nebula (Messier 57) is a planetary nebula in the constellation Lyra approximately 2300 Ly from earh. Planetary nebula are formed when ionized gas is expelled by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf. Taken in narrowband using the California, France, Hawaii Telescope palette (Hα = Red, OIII = Green, SII= Blue) Unfortunately my OIII data was slightly out of focus the the results is not a good as it could be. If you want to know more the asttobin link is: http://www.astrobin.com/255438/