Νεφέλωμα Δακτυλίδι - Μ57 (crop/hubble)

-> Telescope: LX200GPS 14" - Hyperstar 3

-> CCD: ATIK 314L+ (1,4mp)

-> Guiding Telescope: SkyWatcher 80ED Pro

-> Guiding Camera: Meade DSI 2

-> Guiding Software: PHD

-> Filter: Astronomik Lum / Ha / O3 / S2

-> Processing: MaximDl / CCDStack / PhotoShop CS5

-> Exposures: LHaO3S2 = 4hrs 30min

-> Date: 21, 29, 30 May - 1 Jun 2011

-> Place: Rafina Attikis

HOO: Hellenic Online Observatory

GAC: Greek Astronomy Club

http://www.greekastronomy.gr