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M57-Ring-Nebula
M57 - The Ring Nebula in Lyra
L(Ha)-R(Ha):G:B combination.
L=120min Ha=360min R=40min G=30min B=40min
L & Ha
Telescope: GSO R-C 10" F/8 on Gemini G42
CCD SBIG ST-8ME
AO8 - Adaptive Optics
RGB
Telescope: DK-Astrograph 12.5" F/7,8
CCD SBIG ST-10XME
Località: Trivolzio (PV)
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