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Getting plate-solving status, please wait...
Soap Bubble Nebula (PN G75.5+1.7) in HSO, 


            Rathi Banerjee
Soap Bubble Nebula (PN G75.5+1.7) in HSO
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Soap Bubble Nebula (PN G75.5+1.7) in HSO

Technical card

Dates:Oct. 21, 2019Oct. 23, 2019

Astrodon Ha 36mm 5nm: 40x300" (gain: 100.00) -10C bin 1x1
Astrodon Oiii 36mm 3nm: 76x300" (gain: 100.00) -10C bin 1x1
Astrodon SII 36mm 3nm: 40x300" (gain: 100.00) -10C bin 1x1

Integration: 13.0 hours

Darks: ~25

Flats: ~25

Flat darks: ~25

Avg. Moon age: 23.19 days

Avg. Moon phase: 39.24%

Bortle Dark-Sky Scale: 5.00

Temperature: 20.00

Basic astrometry details job: 3024567

RA center: 20h 15' 22"

DEC center: +38° 2' 56"

Pixel scale: 0.395 arcsec/pixel

Orientation: 270.379 degrees

Field radius: 0.307 degrees

Resolution: 4546x3246

Locations: Home, Austin, Texas, United States

Data source: Backyard


This was certainly a tough one... the target is not even visible in individual frames, so I had to leave it on faith and trust the plate solve to do its job. When I had collected about 30 minutes of subs, I immediately stacked them to see if anything became visible, and sure enough... the bubble was visible now, but only in Ha & a bit more prominently in OIII. There was hardly any data in SII, so I used it to form the green channel, thereby allowing me to produce realistic star colors in the image instead of magenta or blue stars, as are predominant in Hubble, SHO, HOO palette images.



Rathi Banerjee
License: None (All rights reserved)

Sky plot

Sky plot


Soap Bubble Nebula (PN G75.5+1.7) in HSO, 


            Rathi Banerjee