Prominences on the Sun in Ha
Date/Time: July 21, 2012 7:55PM PDT
Location: Island Star Party, Bright Angel Park, Cowichan Station, BC, Canada
There were several prominences visible scattered around the Sun's perimeter, however there was one giant prom at the 2 o'clock position which everyone who looked remarked about. This had a huge trailing plume of plasma trailing off into space, and had a small prom beisde it forming a small hole between the two proms.
Equipment: Hutech-modified Canon T2i dSLR a-focal through a 2.5x Powermate, IDAS VLC filter, & Lunt LS60THa + LS50FHa solar telescope mounted on an HEQ5 tracking mount.
Processing:
Adobe Lightroom 4 - crop, adjust light curves and clarity, annotate
Adobe Photoshop Elements 10 - Reduce colour depth to 8 bit, apply Sobel method edge detection.