Optik / Mount: 180 Epsilon f2.8 , Alt-5 Koch-FS2 Camera / Filter: ZWO ASI 6200 MM Pro Mono, Astrodon Ha,OIII ,SII ca. 4,6 hours (sub 600/300sec)Date 14 August 2020 The North America Nebula covers an area of more than four times the size of the full moon, but its surface brightness […]
