DESCRIPTION: Two sessions data (153 min) of this beautiful astronomical object…
OBJECT: IC 1805, The Heart Nebula, Constellation Cassiopeia (Cas), RA 2h 33m, DEC 61°26’, apparent magnitude 6,5, apparent dimension 60’ x 60’, FOV 4,1° x 2,7°.
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor 500/5,6 PF, Astronomic UV/IR/L2 Clip in filter, Rollei Astroklar light pollution filter, Dew heater strip, Sensor pixel scale 1,79 arcsec/px, tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding.
ACQUISITION: Session 1 - September 10, 2021, Struz, CZ, Subexposure 180s, f 5,6, ISO 2000, Interval 15 s, RAW-L, Lights 26x, Darks 30x, Bias 20x, Flats 20x, DarkFlats 10x. Total exposure time 78 min. Night, breeze, 14° C, No Moon, Backyard - Light pollution - Bortle 5. Session 2 - October 1, 2021, Strum, CZ, Subexposure 180s, f 5,6, ISO 2000, Interval 15 s, RAW-L, Lights 25x, Darks 30x, Bias 20x, Flats 20x, DarkFlats 10x. Total exposure time 75 min. Night, stronger wind, 10° C, No Moon, Backyard - Light pollution - Bortle 5.
STACKING AND POST PROCESSING: AstroPixelProcessor (stacking, background neutralisation, light pollution removal, calibrate background and stars colours) , Adobe Photoshop CC 2022 (stretching, black and white point settings, star reduction and dim, enhance DSO, noise reduction, contrast setting and sharpening). No cropped, image size 3840 x 2560 px.
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