Abell 2218 (ACO 2218) Cluster of Galaxies in Draco. The prominent spiral galaxy is PGC 58586 (MCG
+11-20-019) with a type of Sa. Taken over several nights from July 4 through July 15, 2018. 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) = 492 : 65: 65: 65. This image was captured
at and is displayed at 0.57 arc-seconds per pixel. Captured with Nebulosity, calibrated and sigma
combined in Iris with other processing using PixInsight LE and Photoshop CS. North is up.