Arp 273- Two Interacting Galaxies 300 million light years distant in Andromeda
A pair of interacting galaxies spanning only 2.5 arc minutes on the sky. A full moon would fully obliterate this entire field of view. The brightest star in angular proximity to the galaxies is a double star system HIP 10999 at mag. 8.7 and 2000-2600 light years distance. The galaxies are some 300 million light years distant. Imaged from Nova Scotia, Winter, 2021
LRGB Combination
| Data | |
|---|---|
| Altitude at culmination 85° | |
| Minimum Airmass Value (sec z) 1.0 | |
| Mean FWHM 3.5 arc-s | |
| Taking Camera SBIG STL-11002XM | Nova Scotia Winter 2021, skies ~mag 6.6 - CCD @ -20C |
| Imaging OTA | AGO 14.5" iDK |
| Equivalent focal length and ratio | 2465mm @ f/6.7 |
| Mount | Astro-Physics 1600GTO |
| Guiding | PHD2/ONAG/Lodestar X-2 |
| RGB Total Integration Time 5hrs 40mins | L7x10 min R9x5 min, G9x5 min, B9x5 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 |
| Reprocessed Jan 2023 | PixInsight, Affinity Photo v.2.03 and Bob Franke's CCDBand-Aid |
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