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I agreeImaging telescopes or lenses: Planewave CDK24
Imaging cameras: FLI Proline 16803
Mounts: Planewave L600
Guiding cameras: Starlight Xpress Ultrastar
Focal reducers: None
Software: Photoshop CS3 · PixInsight 1.8 · PHD Guiding 2 · CCDWare CCD Inspector · Planewave PWI4 · Planewave PWI3 · Maxim DL6 · Sequence Generator Pro
Filters: Astrodon 50 mm 5 nm Ha
Accessory: FLI CFW-5-7 · Astrodon Monster MOAG · Hedrick Focuser · Planewave Delta-T · Planewave EFA
Dates:April 22, 2020
Frames:Astrodon 50 mm 5 nm Ha: 40x1800" -30C bin 1x1
Integration: 20.0 hours
Darks: ~20
Flats: ~20
Flat darks: ~20
Bias: ~20
Avg. Moon age: 28.98 days
Avg. Moon phase: 0.34%
Mean SQM: 21.30
Astrometry.net job: 3461700
RA center: 9h 55' 53"
DEC center: +69° 40' 44"
Pixel scale: 0.468 arcsec/pixel
Orientation: -178.559 degrees
Field radius: 0.216 degrees
Resolution: 2399x2304
Locations: KG Observatory, Julian, CA, United States
Data source: Backyard
Didn't think I could get deeper than my prior attempt with 28 hours of 5 nm Ha captured by Adam Block in his 32" - with the moon out...
Here's my 20 hours of 5 nm Ha captured over the last 4 days between 8:30 PM and 1:30 AM PST. I was pleased to discover I could get noticeably deeper with 24" vs 32" and 20 hours vs 28 hours - but no moon with a 21.3 SQM sky all 4 days.
Red-colored Ha was very carefully screened over LRGB to preserve all the Ha detail. Adam's stacked and deconvolved Ha has 1.78" FWHM vs my 1.92" FWHM, so there's a minor loss of Ha detail. The deeply exposed M82 core in Ha was significantly dimmed using both PI HDR and PS Shadows/Highlights to help preserve the natural RGB after the Ha screening process.
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