The "first" coronado pst mod.

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Re: The "first" coronado pst mod.

Post by Merlin66 » Sat Nov 03, 2018 4:48 am

I remember that....
Early 2007 we were modding PST in the UK.
I was the first to identify and measure the front PST barlow element and publish the "majic" spacing -200mm inside focus as a definitive requirement.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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Re: The "first" coronado pst mod.

Post by robert » Sat Nov 03, 2018 10:03 am

Yes, lots of activity then with webcam mods as well and stacking software. And the ban on CN was a big stimulus for Stephen Ramsden to start Solarchat which has been amazing.
Robert ... nt-pst.htm
images and animations
2019 images
2018 images ... 1234171714
ED80. ED100. SW200. Celestron-150mm-PST mod. C9.25. ES127
LS60PT-LS60F-B1200. B600-Cak. PGR-Ch3-IMX265

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