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Uploaded 22-Jul-12
Taken 21-Jul-12
Visitors 79


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Dimensions800 x 667
Original file size747 KB
Image typeJPEG
Color spacesRGB
Date taken21-Jul-12 19:55
Date modified22-Jul-12 22:19
Shooting Conditions

Camera makeCanon
Camera modelCanon EOS REBEL T2i
Exposure1/4 at f/NA
FlashNot fired, compulsory mode
Exposure bias0 EV
Exposure modeManual
Exposure prog.Manual
ISO speedISO 1600
Metering modePattern
Prominences on the Sun in Ha

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.