H-Alpha Sun and Filaments – May 10, 2010

H-Alpha Sun and Filaments – May 10, 2010
By Erika Rix

2010 May 10, 1355 UT – 1610 UT
Solar h-alpha featuring filaments – Erika Rix
PCW Memorial Observatory, Zanesville, Ohio USA
DS 60mm Maxscope, LXD75, 21-7mm Zhumell

H-alpha sketch created scopeside with black Strathmore paper, white Conte’ crayon and pencil, white Prang watercolor pencil, Derwent charcoal pencil, black oil pencil.

T: 5°C-11°C, H: 45%
S: Wilson 3, T: 3.5/6
Clear/slightly hazy, light breeze
Alt: 40.3-62.8, Az: 101-139.7

Paul had a late night imaging so I brought the dogs outside with me, puppies included, to keep it quiet in the house for him. This, of course, meant lots of extra paws running around the observatory floor instead of just the steady snoring of Riser, my regular observing buddy. The views were shaking so badly that I finally gave up and tore down the rig, resetting it back up in the grass. I should have done that to begin with I suppose since seeing wasn’t the greatest and would have been a lot worse in the observatory, especially with the temps rising so quickly after our freeze last night.

There were quite a few features to concentrate on, but what really caught my eye were two areas of filaments in the NE quadrant. The transparency and seeing were just poor enough that I really struggled with pulling any detail out of the prominences on that section of the limb. I didn’t want to miss out trying to capture them as they reached inward across the disk, forming a beautiful display of soft looking filaments. Then even further inward reaching toward the center, the details were sharper with the next set of filaments.