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| | Welcome to our newest member, Icecreamaker | | |
Welcome to the Wild About Britain forums | | | | 
24-10-2008, 04:07 PM
|  | Member of the Wild Empire | | Join Date: Oct 2008
Posts: 396
| | | star spectra
Anyone doing this? Here's a pic I took the other night of starfield in Cygnus near P Cyg - a star bright in hydrogen lines in red and blue - centre and top right. Centre right is nearby cool giant star Chi Cyg and lower right brilliant Vega showing dark hydrogen [Balmer] lines in blue-violet.
Used my SCT + Rainbow grating 'filter' + Canon 300D DSLR in exposures of
5s-30s. The spectrum provides a clue to the colour sensitivity of the camera. Good fun! 
Last edited by nytecam; 24-10-2008 at 04:19 PM.
Reason: pic missing!
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