Dates:Aug. 11, 2019 , Aug. 15, 2019 , Aug. 17, 2019
Frames:
Astrodon 3nm OIII: 75x900" bin 1x1
Astrodon I-series: 61x12" bin 2x2
Ha 5nm: 130x900" bin 1x1
Integration: 51.5 hours
Avg. Moon age: 14.13 days
Avg. Moon phase: 93.95%
Astrometry.net job: 2932464
RA center: 20h 15' 40"
DEC center: +38° 2' 34"
Pixel scale: 0.512 arcsec/pixel
Orientation: 18.428 degrees
Field radius: 0.161 degrees
Resolution: 1859x1284
Data source: Backyard
The Soap Bubble in Cygnus turned out to be a tough customer. Even with the focal reducer bringing my C14 down to about f/7.7, the bubble is barely visible on stretched 15 minute sub-exposures in Ha and OIII. The plus side is that the final image revealed the variability in thickness, color, and fringing of the bubble's outline.
I hope you like it!
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