Imaging telescopes or lenses: Takahashi FSQ 106EDXIV
Software: DC-3 Dreams ACP Expert · Aries Productions Astro Pixel Precessor · PixInsight version 1.8
Filters: FLI/Chroma Research Grade 65mm Square H-alpha 5nm · FLI/Chroma Research Grade 65mm Square S-II 3nm · FLI/Chroma Research Grade 65mm Square O-III 3nm
Dates:Oct. 21, 2019 , Oct. 30, 2019
Frames:
FLI/Chroma Research Grade 65mm Square H-alpha 5nm: 19x1500" -20C bin 1x1
FLI/Chroma Research Grade 65mm Square O-III 3nm: 26x1800" -20C bin 1x1
FLI/Chroma Research Grade 65mm Square S-II 3nm: 19x1500" -20C bin 1x1
Integration: 28.8 hours
Darks: ~120
Flats: ~20
Bias: ~120
Avg. Moon age: 12.35 days
Avg. Moon phase: 28.77%
Bortle Dark-Sky Scale: 6.00
Mean SQM: 19.00
Astrometry.net job: 3039203
RA center: 21h 1' 49"
DEC center: +44° 11' 52"
Pixel scale: 2.328 arcsec/pixel
Orientation: 0.998 degrees
Field radius: 3.320 degrees
Resolution: 1824x1366
Locations: Tapas Observatory, San Jose, CA, United States
Data source: Backyard
North American Nebula and Pelican Nebula captured under Bortle 6 skies. The left half of the image and especially the lower left shows a color hue indicative of OIII nebulosity (which also shows up in the individual frames of the stack and the stack). I had some problems with OIII acquisition (mis-matched flats). So not sure if it's actually nebulosity or data issues. Regardless I am leaving it in there since the rest of the image (OIII frames and stack) seems to show no such artifiacts, indicating that acquisition itself might be fine.
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