Solar disk in H-alpha on May 20th, 2009
Sketch and Details by Erika Rix
2009 May 20, 1410UT – 1515UT
Solar h-alpha, AR1017
PCW Memorial Observatory, Zanesville, Ohio USA
DS 60mm Maxscope, LXD75, 21-7mm Zhumell
Sketch created scopeside with black Strathmore Artagain paper, white Conte’ crayon and pencil, white Prang watercolor pencil, Derwent charcoal pencil, black oil pencil.
Temp: 17.3°C-21.1°C, Humidity 50%
Seeing: Wilson 4, Transparency: 3/6
Clear with slight breeze and a little haze
Alt: 42.6, Az: 99.4
Active region 1017 is now spending its last moments on the western limb and will be leaving us soon. The plage was fairly unremarkable and faint except for a very bright portion on the leading edge of the faint filament running north to south along side of it.
The region approximately 40° in from the eastern limb has a slender, but well-defined filament that, upon closer closer inspection, branches off toward the north with a black, almost round smudge at the crook of the branch. There were contrasty areas of faint plage making streaks and mottles around the filament.
There were a few broader filaments scattered about, although soft in appearance. And the prominences were very small and scattered; however, there was on area of prominences toward the south that made a beautiful display.