2010 04 30 – H-alpha
A blast from the past in 2010
2010 April 30, 1430 – 1530 UT
Solar h-alpha – Erika Rix
PCW Memorial Observatory, Zanesville, Ohio USA
DS 60mm Maxscope, LXD75, 21-7mm Zhumell
H-alpha sketch created scopeside with black Canson paper, white Conte’ crayon and pencil, white Prang watercolor pencil, Derwent charcoal pencil, black oil pencil.
T: 21°C-24.6°C, H: 48%-45%
S: Wilson 3, T: 4/6
Clear with slight breeze
Alt: 44.7-54.8, Az: 111.1-127.4
Three main filament areas yesterday are making their way to the proceeding limb. The area to the SE appears shorter than yesterday, but when increasing magnification, I noticed that it was so narrow on either end that it only appeared broken up. There was another small filament forming to the following limb of that area.
The western filament hasn’t made its way clear to the limb yet, but the darker “shadowed” area around it is more pronounced today.
The bright circular plage from yesterday at the NE filamentary area still looks like an eyeball staring back at me, only instead of a pair, there’s only one with the center dark area. Today, I was able to make out that it’s a short filament directly in the middle of the plage reaching NW to SE.
The prominences were still many and very small and there were quite a few smaller filaments scattered across the disk.
PCW Memorial Observatory - Erika Rix 