C91 - NGC3532 - Wishing Well Cluster - 31/1/2022 (Processed cropped stack)

Field flatness testing with camera orientation 180 degress to minimise flatness issues in the corners.

DeepSkyStacker 4.2.6 Stacked 80% (16) of 20 Images Gain 100 @ 10 Sec, 35 DARK Gain 100 @ 60 Sec, 35 BIAS Gain 100 @ 1/1000 Sec, 21 FLATS Gain 100 @ 1/10000 Sec, Post-processed with Adobe Photoshop CC 2022 with AstroFlat as FLATS not matched

Telescope - PowerNewt 200mm f/4 with ASA Reducer/Coma Corrector (at 65mm backfocus) for F=568mm f/2.84, No extension tube, Astronomik L2 UV-IR filter, QHY 268C CMOS camera field 90' x 134', Ambient ~20C, Camera 0C.
StellarMate on RP-4B with Kstars/Ekos for EQMOD mount control, auto-focusing, plate solving and image acquisition. Mount - Skywatcher NEQ6 Pro. Guidescope - Orion ShortTube 80 with Starlight Xpress SuperStar (Mono) CCD Auto Guider and Ekos auto guiding software.

C91 Wishing Well ClusterCaldwellNGCNGC3532 C91 Wishing Well ClusterOpen Cluster

From 2022 Remote Control