10 micron x 6mm Air gap slit plate

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Merlin66
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10 micron x 6mm Air gap slit plate

Post by Merlin66 »

I've been in discussions with ThorLabs Re. the possible construction of a longer slit version of their 10 micron x 3mm air slit plate.
https://www.thorlabs.com/newgrouppage9. ... up_id=1464
They now agree it would be possible to supply a version with a slit length of 6mm.
This would be a "special order" with a minimum EOQ of around >10 units.
This slit design would be suitable for spectroheliographs with a telescope <600mm focal length, to give full disk coverage.
If there is any interest in this slit, please contact me...........


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
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"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: 10 micron x 6mm Air gap slit plate

Post by rsfoto »

Hi Ken,

Sounds interesting but before thinking in a slit plate ¿ where do I find the " easy " construction manual for an Spectroheliograph ? :mrgreen:

as well as a material list. I have plenty of FD Canon lenses in different focal lengths laying around.

Thanks Rainer


regards Rainer

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Re: 10 micron x 6mm Air gap slit plate

Post by Merlin66 »

My book covers all the technical, acquisition and processing aspects of the SHG.
“Imaging Sunlight with a digital SHG.” Available on Amazon etc. :D ;)

The SHG is really no more than using a high resolution spectrograph on a telescope to image the solar spectrum.
You need a fast frame video camera, I use the ASI 174 and the ASI 1600.
Fulvio Mete has a good website and recently presented his SGH book.
http://www.lightfrominfinity.org/Libro% ... graphy.pdf
There's also the SimSpec_SHG spreadsheet to allow you to evaluate the characteristics of your SHG......
SimSpec SHG V1_4.xls
(60 KiB) Downloaded 4 times


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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