IC 4553 (Arp 220, IC 1127) galaxy type S?, in Serpens Caput. In the Arp catalog of peculiar galaxies,
Arp 220 is in the class of “Galaxies with Adjacent Loops”. IC 4554, galaxy type S0, is located below
and to the left of IC 4553 and LEDA 1687956, galaxy type E, is located to the lower right of IC 4553.
Taken over several nights from May 24 through June 21, 2019. Imaged with Starlight Xpress’ SX-825
camera and a Celestron EdgeHD 9.25 at f10, on a Losmandy G11/Gemini mount. The L subframes were 12
minutes binned 1x1, while the RGB subframes were 5 minutes binned 2x2 resulting in the following total
exposures L:R:G:B (min) = 408 : 80: 75: 80. Captured with Nebulosity, calibrated and sigma combined
in Iris with other processing using PixInsight LE and Photoshop CS. North is up.