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Old 24-10-2008, 04:07 PM
nytecam's Avatar
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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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Old 24-10-2008, 04:10 PM
Commander of the Wild Empire
  
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Re: star spectra
Did you post the link for the picture I can't see it?
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Old 27-10-2008, 12:13 AM
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Re: star spectra
Hi thanks for posting the photo, it is amazing I've never seen anything like that on a photo before
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