ok guys need some help

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Re: ok guys need some help

Post by highfnum »

sunspot group upper right prom lower left


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Re: ok guys need some help

Post by swisswalter »

Hi John

that is a good progress


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Re: ok guys need some help

Post by highfnum »

Yes I have some hope


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Re: ok guys need some help

Post by highfnum »

i locked down unit on rail to keep stable
latest.jpg
latest.jpg (183.73 KiB) Viewed 3813 times


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Merlin66
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Re: ok guys need some help

Post by Merlin66 »

Well done!
A bit more practise and you'll be kicking goals.....
Stick with the narrow slit gap...
Get the exposure to give you a deep absorption line, keep checking your focus and play around with the extraction of various bandwidths (# of pixels) from the spectral image.
You may also have to throw a light proof cover over the SHG to reduce unwanted reflections etc.
Onwards and Upwards.


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Re: ok guys need some help

Post by highfnum »

Merlin 66
What about cleaning glass disk?


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Re: ok guys need some help

Post by Merlin66 »

Sure, it can be cleaned with alcohol/water mix....
The scan lines won't be coming from the slit gap - usually dust etc. will show as continuous "transversalium" lines across the image...
Hmmm
Question: in the presented image the scan seems to be across (horizontally) - is this correct?


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Re: ok guys need some help

Post by highfnum »

Ok I cleaned it there was a haze on it
not sure I understand Question


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Re: ok guys need some help

Post by Merlin66 »

It's OK....
The vertical lines in your image are not caused by dust...
They come from somewhere in the processing..


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