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One night, six Messier globular clusters ^_^, 


            Luigi Fontana

One night, six Messier globular clusters ^_^

Technical card

Imaging telescope or lens:Orion ODK 12"

Imaging camera:Canon EOS 450D Baader mod

Mount:10Micron GM2000 QCI

Guiding telescope or lens:Vixen 60/700

Guiding camera:Lodestar


Accessory:Barlow 2x Apo

Resolution: 2188x2212

Dates:July 8, 2016

Frames: 3x600"

Integration: 0.5 hours

Avg. Moon age: 4.13 days

Avg. Moon phase: 18.12% job: 1153901

Locations: Lierna, Lierna (LC), LC, Italy


An easy set of shots from a "less than average" sky (SQM 20,0 to 20,2, Bortle 5). For each globular I took 3x600s exposures. Just for fun! The different background is due to different height above the horizon and the sky going darker with time (and my "processing lazyness"). Images downsized to 25%. IMPORTANT! Same scale for all clusters, and (within reason) same processing

Semplice "collezione" di globulari estivi. Per ognuno tre scatti da 10 minuti. Cielo mediocre (SQM salito nella notte da 20,0 a 20,2, Bortle 5). Solo per divertimento! Immagini al 25% degli originali. Il fondo cielo non omogeno è dovuto a diverse altezze sull'orizzonte, al cielo che mano a mano migliorava e alla mia pigrizia in fase di elaborazione. :-D IMPORTANTE: Le immagini hanno tutte la stessa scala ed una elaborazione ragionevolmente simile.



Luigi Fontana
License: Attribution-NonCommercial-ShareAlike Creative Commons


One night, six Messier globular clusters ^_^, 


            Luigi Fontana