On the evening of June 17, 2020, I took up a little extreme shooting of nebulae from the city. Extreme, since in conditions of strong urban exposure, the capture of diffuse nebulae without filters is very difficult. Fortunately, I am the owner of the wonderful Optolong L-eNhance filter, which only passes lines of hydrogen H-alpha, oxygen OIII and hydrogen H-beta. I had very little time for shooting, as the nebula quickly moved between the neighboring house and the tree. I am satisfied with the result, given the short shooting time – only 15 minutes. Also for shooting, I used a four-lens apochromat Meade 70 mm quadruplet apo.
-Meade 70 мм quadruplet apo astrograph
-Meade LX85 mount
-Optolong L-eNhance 1.25″ filter
-ASI ZWO 183MC camera.
28 frames per 30s, gain 365. Calibration with PIPP, stacking with Fitswork.
Location: Russia, Anapa, backyard.