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Astrophotography from Ursa Major Observatory @ ROSA

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deeplook.at
“Alkor” Lacerta N25010c Newtonian, f/D = 4 SX Trius 694, Baader LRGB filter
ASA DDM 60 pro
[OIII] 24x20min / Ha 27x20min / L 22x10min / RGB 14x10min per filter [OIII] 22x10 s + Ha 15x10 s for the bright core
27 h 40 min
data acquired remotely using CCD Commander
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NGC 6543 in Draco
Planetary nebula
~ 6.5’ for the halo, 20” for the core
8.1 mag for the core
Draco
several nights in May + June 2017
discovered by Wilhelm Herschel 1786 - he discovered the core. IC 4677 discovered by E.E. Barnard in 1900.
~3 300 Ly