Article on digital SHG

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Merlin66
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Article on digital SHG

Post by Merlin66 » Mon Apr 03, 2017 6:01 am

John Paladini recently published an article in the Westchester Amateur Astronomer's "SkyWatch" for April 2017.
Give a good overview of the history and background of the SHG as well as details on the construction of his digital SHG.
Just a few comments:
1. Fred Veio's "The Spectrohelioscope" booklet is reproduced with his approval in the Astronomical Spectroscopy forum files area.(Page5)
https://groups.yahoo.com/neo/groups/ast ... copy/files
2. The arrow on the grating should be pointing towards the camera.(Page 9)
3. Wah!'s SLiM program is augmented by a great tutorial, but the Photoshop features he uses requires at least version CS5 (or later)(Page11)

John_P_April2017.pdf
(1.39 MiB) Downloaded 59 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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