M99 NGC4254 in Coma Berenices

Imaged from Nova Scotia, Winter, 2025

Wikipedia Link for M99

LRGB Combination
Data
Altitude at culmination 60°
Minimum Airmass Value (sec z) 1.2
Taking Camera SBIG STL-11002XM Nova Scotia Winter, 2025, skies~mag 6.4 - CCD sensor @-20C
Imaging OTA AGO 14.5" iDK
Equivalent focal length and ratio 2465mm f/6.7
Mount Astro-Physics 1600GTO
Guiding PHD2/ONAG XM/Ultrastar
RGB Integration Time 24hrs 40mins L-51X10 min, R-30X10 min, G-33X10 min, B-34X10 min-Astrodon Gen 2 I series Filters. Binned 1X1
Acquisition Main Sequence Software-Sequence Generator Pro
Calibration and Stacking Darks, Flats and Bias - Stacked and calibrated with PixInsight
Processed May 2024 PixInsight, Affinity Photo v.2.6.0 and Bob Franke's CCDBand-Aid

Annotated Image

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