Posidonius speed sketch

Also known as: Posidonius crater Date/time: 2016.03.14.  16:30-16:40 UT Equipment: 235/1280 OptiScope, dobsonian mount, + Scopium SWA 15,10 ; Planetary 5mm Seeing: 8/10 Transparency: 3-4/5 Col. : 342.5° Temperature: – Humidity: – Wind: low Location: Zákány, Hungary N46°14′ 59,2” E16°57′ 15,3” Observer: Tamás Bognár Media : Wood-free drawing paper, H …

Posidonius crater

Also known as:  Posidonius Crater Date/time: 2013.12.08. UT 16:30-18:00 Equipment: 235/1280 Dobson – OptiScope Magnification and filter(s): 64x – 320x Seeing: 7/10 Transparency: 2-4/5 Temperature: -1°C Humidity: – Wind: – Location: Zákány, Hungary N46°14′ 59,2″ E16°57′ 15,3″ Observer: Bognár Tamás Media: black paper, white pastel (chalk and pencil), charcoal pencil, gel …