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I agreeImaging telescope or lens:William Optics RedCat 51 Petzval APO
Imaging camera:ZWO ASI183MC Pro
Mount:Sky-Watcher EQ-6R Pro SynScan
Guiding telescope or lens:ZWO 30mm f/4 Guide Scope
Guiding camera:ASI224MC
Software:Stark Labs Nebulosity 4.2, Plieades Astrophoto PinInsight 1.8, IDEIKI AstroPhotography Tool (APT), SharpCap Pro 3.2, PHD2 Guiding
Filter:Astronomik L2 UV/IR Cut
Resolution: 5494x3670
Dates:Sept. 7, 2019
Frames:Astronomik L2 UV/IR Cut: 30x120" (gain: 100.00) -15C bin 1x1
Integration: 1.0 hours
Darks: ~30
Flats: ~30
Flat darks: ~30
Avg. Moon age: 8.70 days
Avg. Moon phase: 63.79%
Bortle Dark-Sky Scale: 4.00
Mean SQM: 20.00
Mean FWHM: 6.00
Temperature: 15.00
Astrometry.net job: 2921266
RA center: 22h 15' 12"
DEC center: +49° 53' 13"
Pixel scale: 1.993 arcsec/pixel
Orientation: 176.419 degrees
Field radius: 1.829
Data source: Backyard
NGC 7243, Caldwell 16, is an open cluster in the constellation Lacerta. It lies approximately 2,800 light-years away, and is thought to be just over 100 million years old, consisting mainly of white and blue stars.
The first image ("original") was First Light for the William Optics 51mm f/4.9 Petzval "RedCat" Apo refractor. The next ("final") image was after tweaking the collimation and support screws around the objective cell, while viewing an artificial star. Both images are deliberately un-cropped.
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