Simply Awe-Inspiring * by Canon DSLR Challenge

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September 7, 2005	Andrew Chatman

Simply Awe-Inspiring *

From Earth

This photograph displays Prominences along the edge of the Sun -- magnetic loops of superhot gas. Two Earths could fit at the same time through the loop on the left.

Canon EOS 20D ,Televue Pronto 680mm with H-Alpha Filter
Shot through a Hydrogen-Alpha filter, allowing to pass just a very narrow bandwidth in the red part of the spectrum. hide exif

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Canon DSLR Challenge		21-Nov-2006 11:48
JMConradie, thanks! Bob -- No, I m using the normal out of the box 20D (and I used a normal D60 before that). For solar h-alpha work, the blocking filter on the camera does nothing to impede the narrow bandwidth let in by the hydrogen-alpha filter. Andy

jnconradie		21-Nov-2006 06:50
"Out of this world" in more ways than one! I am really impressed and would love to be able to do this one day. Compliments and regards ~jnconradie

Bob AYTON		21-Nov-2006 02:43
Just a question Andrew... are you using the modified 20D (with UV filter removed)? ... Bob

Canon DSLR Challenge		20-Nov-2006 15:38
An additional note on what you are looking at: The surface of the sun has been "blacked out" in Photoshop. When photographing Prominences, which are much dimmer than the happenings on ths surface, you must take a much longer exposure (e.g. 1/80 second) than you would if you were trying to capture details on the surface (e.g. 1/400 second). When I photograph the sun, I routinely take two exposures, one exposed for the surface and one exposed for the prominences, and combine them in Photoshop. For this Challenge, I felt that showing the combined version would not fit with the theme. Andy

Canon DSLR Challenge		19-Nov-2006 15:12
Thanks everyone, For those interested in looking at more solar photos, feel free at my site:http://www.macnmotion.com/myphotosdigitalastrosolar.html Dorys, sure it's nice to have the h-alpha filter, but I live in western NY where it's sunny about 30 days a year! Andy

Canon DSLR Challenge		19-Nov-2006 12:51
Wow, very good. ( Didn't Johnny Cash write a song about this?) ~ Regards Bob

Canon DSLR Challenge		19-Nov-2006 00:17
Beautifully done. - CameraShy09

Nick Powell		18-Nov-2006 08:50
Very effective image, thanks for posting.http://www.pbase.com/eastkent64

Canon DSLR Challenge		17-Nov-2006 21:54
I"m jealous... you have an h-alpha! I only have a simple solar filter. This photo is spectacular. ~dorys

Canon DSLR Challenge		17-Nov-2006 19:43
It's more than awe-Inspiring to me, this is majestic [aam1234]

elips		17-Nov-2006 15:43
I love your title! It points out how there can be simplicity in something as complex as our star. A beautiful image that says a lot with just a few lines! ~Sharon