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Uploaded 30-Aug-11
Taken 27-Aug-11
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Dimensions1200 x 1164
Original file size349 KB
Image typeJPEG
Color spacesRGB
Date taken27-Aug-11 12:03
Date modified30-Aug-11 16:57
Shooting Conditions

Camera makeCanon
Camera modelCanon EOS REBEL T2i
Focal length0 mm
Exposure1/15 at f/1
FlashNot fired, compulsory mode
Exposure bias0 EV
Exposure modeManual
Exposure prog.Manual
ISO speedISO 1600
Metering modePattern
Solar Prominences in Ha

Solar Prominences in Ha

Date: August 27, 2011 12:02PM PDT

Location: Bright Angel Park, Duncan, BC, Canada

Solar observing at the Island Star Party rewarded us with some spectacular prominences and surface features. The Sun had multiple large prominences, some had detached from the Sun's surface with bits floating into space, while others were simple spikes. One giant feature resembled a haystack.

Some simple colour and contrast parameters were applied to this photo to yield a more traditional view than my usual use of Sobel method edge detection. A lovely reddish-orange solar surface is revealed with deep red prominences leaping out into space.

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.

Exposure: 1/60 second at ISO 1600
Bandpass: <0.55 Å

Processing: ACDSee Pro 4 - Modest contrast stretch and colour adjustments, crop and resize.