03Jul2014 PZ SHG: 1st installment: H Beta

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p_zetner
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03Jul2014 PZ SHG: 1st installment: H Beta

Post by p_zetner »

Sunny morning and an imaging opportunity!
Here is H beta.

Cheers.
Peter.
H_beta_103409_2px_crop.jpg


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by swisswalter »

Hi Peter

a wonderful H-Beta full disk shot


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by marktownley »

Very nice disk there Peter!


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http://brierleyhillsolar.blogspot.co.uk/
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: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by Wah »

Good focus~
Do you mind giving me the original image for me to remove the bands?


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by Montana »

Fantastic shot, very detailed and clear :bow :bow :bow

Alexandra


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by p_zetner »

Thanks everyone.

Wah:
Here's the original (sized). The final image had some PS scale and skew transformations applied to circularize the disk. I'm looking forward to see what you do with it.

............... Well, I guess not!!
Despite Stephen's assurance that the site accepts any size file, I get the following message when I try to upload: "The file is too big, maximum allowed size is 3 MiB."
The original (sized) image file size is 5.7MB.


Cheers.
Peter.


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by Montana »

Is it a TIFF? I can only get JPEGs to load here without fuss and certainly any size as long as the pixels aren't more than 2000 wide.

Alexandra


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by p_zetner »

Thanks, Alexandra.

I was trying to load a tiff (16 bit, grayscale) .... oops!
Here's the RGB 8-bit jpeg (original spectroheliogram, sized to circular disk (roughly), before orientation correction (horizontal flip)).

Cheers.
Peter.
montage_103409_2px_500-698_siz.jpg


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by swisswalter »

Hi Peter

is that really the new discovered secret planet that is resembling Saturn ? :? :oops: :?: :cat ;) :lol:


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by p_zetner »

:D Walter!

I thought it was dirt on the slit, but I may have been pointing the scope in the wrong direction!


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by swisswalter »

p_zetner wrote::D Walter!

I thought it was dirt on the slit, but I may have been pointing the scope in the wrong direction!

:lol :lol: :lol: :lol: :lol:


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by Wah »

I can't do the deband well on this image, it seems there is slit shifting during capturing the video, I guess.
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montage_103409_2px_500-698_siz_5_Processed.jpg


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Re: 03Jul2014 PZ SHG: 1st installment: H Beta

Post by p_zetner »

Thanks for trying, Wah.

I do have a bit of an issue with slit orientation - it varies with wavelength, indicating the grating mount rotation axis is not perfect. I can adjust slit rotation during an observing session, but I've become lazy and assumed I can filter out the problem in post-processing! This might be causing the difficulty in removing the bands (although, I generally use a 1px or 2px slice of the spectrum to construct the spectroheliogram).

Here is an example of the video filtering I use (in Virtual Dub).
103409_spec_frames.jpg
I suppose I should be more careful with this!!

Cheers.
Peter.


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