Imaging telescopes or lenses: C9.25
Imaging cameras: SBIG ST-2000XM
Guiding cameras: 10Micron HPS System
Focal reducers: Astro-Physics Telecompressor CCDT67
Software: Pixinsight
Filters: Baader Planetarium OIII 8.5nm · Baader Planetarium Ha 7nm · Baader Planetarium Baader B · Baader Planetarium Baader g · Baader Planetarium Baader R · Baader Planetarium Hb 8.5 nm
Dates:March 30, 2019
Frames:
Baader Planetarium Baader B: 21x180" bin 1x1
Baader Planetarium Baader R: 21x180" bin 1x1
Baader Planetarium Baader g: 21x180" bin 1x1
Baader Planetarium Ha 7nm: 32x300" bin 1x1
Baader Planetarium Hb 8.5 nm: 30x300" bin 1x1
Baader Planetarium OIII 8.5nm: 31x300" bin 1x1
Integration: 10.9 hours
Avg. Moon age: 24.23 days
Avg. Moon phase: 28.57%
Mean SQM: 18.50
Astrometry.net job: 2677012
RA center: 11h 14' 46"
DEC center: +55° 1' 7"
Pixel scale: 0.895 arcsec/pixel
Orientation: 164.013 degrees
Field radius: 0.226 degrees
Resolution: 1460x1094
Locations: Castenedolo, Castenedolo, Italy
Data source: Backyard
Imaging from highly light-polluted skies is always a challenge.
RGB imaging is nearly impossible, narrow band imaging cannot reproduce "true" colors of objects...
... or not?
With the right technique one can get narrowband data from selected objects (emission nebulae) and recover star colors from broad band RGB images.
This image comes from the composition of 6 filters: RGB for star colors, H alpha, OIII and H beta for the nebula.
Unfortunately, due to the high Light Pollution, it was impossible to get better data for the dimmer object, but i'm quite happy of the result under a 18.5 mag/arcsec SQM sky
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