NGC 6820 und NGC 6823
resolution: 1200 x 800 pix and 2168 x 1445 pix
camera:
ST10xme
optic:
8” FFC f/3.6
exposure time
H-alpha (6nm) 7x10min/ OIII (12nm) 7x10min/ SII (12nm) 5x10min/
this image was taken at Roque de los muchachos (La Palma/ Canary ilands) together with Mischa Schirmer
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