NGC 7023 - C4 The Iris nebula
Canon EOS 750Da, prime focus through Skywatcher Explorer 130P-DS OTA, on Skywatcher EQ6-R PRO Synscan GOTO mount, guided by 9x50 finder with ASI120MC-S
20 stacked images x 240sec-darks-flats-bias, processed in DSS, edited in RawTherapee, croped
Exposure time [h] : 01:20:01
F-Number : 4.0
ISO speed ratings : 800
Focal length [mm] : 800
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