NGC 891

• Photographer : Pierrot

• DATE : 2021

• Place : Danyang

• Telescope : Sharpstar SCA260 (FL1300 mm F5)

• Tripod & Mount : Rainbow astro RST400 and nho's pier

• Guide scope/camera : OAG, ZWO ASI174mm mini

• Camera : ZWO ASI2600mm (Gain 100, -20°C)

• Exposure : Total : 95 min

L : 100 x 30 sec (baader L filter)
RGB : each 30 x 30 sec (baader RGB filter)
Dark, Flat, Dark Flat, Bias : nothing

• Software : PixInsight, Lightroom