The Siamese Twins or Butterfly Galaxies in Virgo - NGC4567&4568

Imaged from Nova Scotia, Summer 2026

Wikipedia Link for NGC4567&4568

Wider Field including the elliptical galaxy NGC4564

 

Data
Altitude at culmination 57°
Minimum Airmass Value (sec z) 1.2
Mean FWHM 3.6 arc-s
Taking Camera SBIG STL-11002XM Nova Scotia Summer 2026, ~mag 6.4 - no moon @-20C
Imaging OTA AGO 14.5" iDK
Equivalent focal length and ratio 2465mm @ f/6.7
Mount Astro-Physics 1600GTO
Guiding PHD2/ONAG_XT/Ultrastar Pro
RGB Total Integration Time 12 hrs 0 mins R24x10 min, G24x10 min, B24x10 min, -Astrodon Gen 2 I series Filters. All Binned 1X1
Acquisition Main Sequence Software-Sequence Generator Pro
Calibration and Stacking Darks, Flats and Bias - Stacked and calibrated with PixInsight
Processed PixInsight, Affinity Photo v.2.6.5 and Bob Franke's CCDBand-Aid

 

Annotated Frame

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