Imaging telescopes or lenses: Planewave CDK24
Imaging cameras: FLI Proline 16803
Mounts: Planewave L600
Guiding cameras: Starlight Xpress Ultrastar
Focal reducers: None
Software: PixInsight 1.8 · Sequence Generator Pro · Photoshop CS3 · PHD Guiding 2 · CCDWare CCD Inspector · Planewave PWI4 · Planewave PWI3 · Maxim DL6
Filters: Astrodon 50mm B · Astrodon 50mm R · Astrodon 50mm L · Astrodon 50 mm G
Accessory: FLI CFW-5-7 · Astrodon Monster MOAG · Hedrick Focuser · Planewave Delta-T · Planewave EFA
Dates:July 12, 2020 , July 14, 2020 , July 18, 2020 , July 20, 2020
Frames:
Astrodon 50 mm G: 12x900" -30C bin 1x1
Astrodon 50mm B: 12x900" -30C bin 1x1
Astrodon 50mm L: 68x900" -30C bin 1x1
Astrodon 50mm R: 12x900" -30C bin 1x1
Integration: 26.0 hours
Darks: ~20
Flats: ~80
Flat darks: ~80
Bias: ~20
Avg. Moon age: 25.44 days
Avg. Moon phase: 24.04%
Mean SQM: 21.50
Mean FWHM: 2.22
Astrometry.net job: 3686326
RA center: 17h 11' 57"
DEC center: +72° 26' 27"
Pixel scale: 0.234 arcsec/pixel
Orientation: -178.697 degrees
Field radius: 0.363 degrees
Resolution: 7938x7858
Locations: KG Observatory, Julian, CA, United States
Data source: Backyard
Looking back at my Hercules Cluster of Galaxies project, I wondered if there may be something similar in the July sky with good positioning?
Fortunately there is! And Adam Block has a great reference point NGC6340 in 32-inch Schulman Telescope.
After scanning the area a bit, I noticed there's a lot going on. (-:
This is one of my deepest images under very steady skies. 17 hours of Luminance in a 21.5 average SQM sky with 68 15-minute subs between 1.69" and 2.55" FWHM. The 2x Drizzle stacked result is 2.22" FWHM and the deconvolved result 1.62" FWHM.
The circular NGC 6340 is 55 million light years distant. IC 1251, IC 1254 and UGC 10791 are all about the same distance.
Maybe someone can find something 1 billion+ light years distant? I believe we can see at least 24 magnitude objects here. (-:
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