someyhing very different with my SHG

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highfnum
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someyhing very different with my SHG

Post by highfnum » Thu Nov 26, 2015 9:02 am

I know this is a solar forum
I did not know where to post
and besides who else knows about SHG

I took lunar SHG in sodium light

congrats to Wah! -- program handled image
each exposure was over 1 second thats why resolution not so good
used DMK camera

Merlin66 - has anyone tried this before?

south is left

i notice a few areas glowing brighter in sodium light
any significance?
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Re: someyhing very different with my SHG

Post by marktownley » Thu Nov 26, 2015 10:21 am

That is interesting - I guess you could 'geologically map' the moon like this using a range of wavelengths - very interesting indeed!
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Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: someyhing very different with my SHG

Post by Montana » Thu Nov 26, 2015 11:00 am

:hamster: what a great idea :bow

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Re: someyhing very different with my SHG

Post by Wah » Thu Nov 26, 2015 1:56 pm

:band2 :band2 :band2

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Re: someyhing very different with my SHG

Post by Merlin66 » Thu Nov 26, 2015 9:56 pm

JP,
I remember saying back in early July that I thought the SHG could, with suitable sized telescopes, be used for bright night time objects - Jupiter was mentioned.
As far as I can determine you are the first to record the Moon using an SHG!!!
This may encourage others to do similar trials......
Well done, a monumental achievement - another step along the long hard road to future SHG successes.
Onwards and Upwards.
(EDIT) the guys on the Astronomical Spectroscopy forum have corrected me! There have been various successful spectrographic scans of planets and nebula over the past few years....

http://astrosurf.com/joseribeiro

http://www.astrosurf.com/buil/scan/demo.htm
Last edited by Merlin66 on Fri Nov 27, 2015 3:36 am, edited 1 time in total.
Reason: added info
"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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Re: someyhing very different with my SHG

Post by highfnum » Thu Nov 26, 2015 10:33 pm

wow wee !

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Re: someyhing very different with my SHG

Post by highfnum » Fri Nov 27, 2015 12:05 pm

not the first
i see a that this was done by a few others
before me including jupiter

but not many

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Re: someyhing very different with my SHG

Post by Merlin66 » Fri Nov 27, 2015 1:14 pm

Hmmm
Well they used "conventional" spectrographs, with wider slits and wider bandwidths, not the SHG configuration we'd use for solar.....
"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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Re: someyhing very different with my SHG

Post by highfnum » Fri Nov 27, 2015 6:53 pm

thx and ok
on a more narrow definition, I'll take that

the trick was to use fast optics and using dmk camera that
is a ccd not cmos -- more sensitive

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Re: someyhing very different with my SHG

Post by highfnum » Fri Nov 27, 2015 7:13 pm

I hope other will try like Wah! Zetner DSobserver
since they make very smooth images

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Re: someyhing very different with my SHG

Post by p_zetner » Sat Nov 28, 2015 3:22 am

Interesting result.

The following link on "lunar petrographic imaging" might be informative for you.
http://www.rkblog.rk.edu.pl/w/p/lunar-p ... ge-colors/
Also, the full text of "Manual for Lunar Spectral Work" (Selenology Today #19) is downloadable at:
http://www.lunar-captures.com/SelenologyToday.html

The lunar minerals all have reflectances which vary with wavelength, so spectral imaging provides information about the Moon's mineral composition. The variation with wavelength is slow, though. There don't seem to be any narrow absorption features. In this respect, the SHG might be pretty serious overkill! Simple bandpass filters will be far more efficient.

On the other hand, who knows. Maybe you'll discover something new and amazing!

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Re: someyhing very different with my SHG

Post by Derek Klepp » Sat Nov 28, 2015 4:40 am

A great result and as the light is reflected Sunlight very relevant to what we all do.

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