A Nebula in Cepheus - Sh2-174
Of Dubious Classification- Planetary? HII? or Stromgren Sphere?
Imaged from Nova Scotia, Fall, 2023
HaOIIIRGB Combination - Fall, 2023
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Data
Altitude at culmination 64°
Minimum Airmass Value (sec z) 1.1
Taking Camera SBIG STL-11002XM
Nova Scotia Fall, 2023, ~mag 6.4 - @-20C
Imaging OTA
14.5" AGO iDK
Equivalent focal length and ratio
2465mm f/6.7
Mount
Astro-Physics 1600GTO
Guiding
PHD2/ONAG XM/Ultrastar
HaOIIIRGB Combination - Total integration time 22 hrs 30 mins
Ha-15x30 min, OIII-15x30min, R-15x10 min, G-15x10 min, B-15x10min-Astrodon Gen 2 I series RGB Filters, 3nm OIII, 5nm Ha. All binned 1X1
Acquisition
Main Sequence Software-Sequence Generator Pro
Calibration and Stacking
Darks, Flats and Bias - Stacked and calibrated with PixInsight
Processed Dec13, 2023
PixInsight, Affinity Photo v.2.2.1 and Bob Franke's CCDBand-Aid