DESCRIPTION: I tested to capture Squid nebula - very fine blue object in the center - but unfortunately not successful. More data needed, maybe blue light pollution filter destroyed this object, maybe OIII filter is needed. “Artistic” processing via StarXTerminator.
OBJECT: Sh2-129 Flying Bat Nebula and Squid Nebula, Constellation Cepheus, apparent magnitude N/A, apparent dimension 150’.
CALIBRATION: RA 21h 10m, DEC 59°58’, FOV 4,18°x 2,82°, Field radius 2,5°, Pixel scale 3,92 arcsec/px, Orientation: Up is 90,9° E of N, Image size 3840 x 2560 px,
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor Z 500/5,6, Astronomic UV/IR/L2 Clip in filter, Rollei Astroklar light pollution filter, Dew heater strip, tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding.
ACQUISITION: August 3, 2022, Struz, CZ, Subexposure 180s, f 5,6, ISO 1600, Interval 15 s, RAW-L, Lights 51x, Darks 20x, Bias 20x, Flats 20x, DarkFlats 10x. Total exposure time 153 min. Night, no wind, 18° C, 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 + StarXTerminator.
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