DESCRIPTION: My second attempt at photo of Veil Nebula in constellation of Cygnus by 500 mm Nikkor lens, only 55 min acquisition.
OBJECT: NGC 6992, Veil Nebula, Constellation Cygnus (Swan), apparent magnitude 7, apparent diameter approx. 3 degrees, FOV 4 x 2,7 arcdeg. More info <a href="
https://en.wikipedia.org/wiki/Veil_Nebula" rel="noreferrer nofollow">
en.wikipedia.org/wiki/Veil_Nebula</a>
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor 500/5,6 PF, no filter, pixel scale 1,79 arcsec/px, tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding, dew heater.
ACQUISITION: August 20, 2020, Struz, CZ, Exposure 300s, f 5,6, ISO 400, interval 15s, Lights 11x, Darks 24x, Bias 24x, Flat 30x. Total exposure time 55 min, night, no moon, breeze, 17C, light pollution - Bortle 5.
STACKING AND POST PROCESSING: AstroPixelProcessor (stacking, background neutralization, light pollution removal, calibrate background and stars colors) , Adobe Photoshop CC 2020 (stretching, black and white point settings, stars reduction and dim, I forgot for blue hallo reduction, enhance DSO - vibrance, no noise reduction, motion blur sharpening ,contrast setting). No cropped, image size 3840 x 2560 px.
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