21 June : Ha with SHG
- DSobserver
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21 June : Ha with SHG
After some improvement with focus and a thinner slit (and more visible dust.....) the SHG start to show good pictures :
- marktownley
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Re: 21 June : Ha with SHG
That's getting there! Good job!
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: 21 June : Ha with SHG
Hi Vincent
that looks very good, congratulations
that looks very good, congratulations
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
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from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa
- DSobserver
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Re: 21 June : Ha with SHG
here it is : http://hpics.li/3ac2119
I'll try to clean my slit, but can you explain how you treat those pictures for the line, 'cause as already discussed FFT was not enought good....
I'll try to clean my slit, but can you explain how you treat those pictures for the line, 'cause as already discussed FFT was not enought good....
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Re: 21 June : Ha with SHG
Dear DSobserver,DSobserver wrote:here it is : http://hpics.li/3ac2119
I'll try to clean my slit, but can you explain how you treat those pictures for the line, 'cause as already discussed FFT was not enought good....
I wrote a document about my experience using Photoshop to process the SHG images, you may find it in the library of the forum.
Here is the band removed version, hope you like it.
Wah!
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Last edited by Wah on Sun Jun 22, 2014 2:40 pm, edited 1 time in total.
- DSobserver
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Re: 21 June : Ha with SHG
waouuuuhhh wahhhh!!!!!
Looks great!
But now I've a new issue : this morning I try to clean the slit with pressure air and a wooden tooth stick. Dark line desapeare, but clear one appear! It probably come from the fact that dark line were probably coming from pieces of metal on the slit that I remove....
Did you ever try to polish your slit from surplus shed? Any recommendation?
Looks great!
But now I've a new issue : this morning I try to clean the slit with pressure air and a wooden tooth stick. Dark line desapeare, but clear one appear! It probably come from the fact that dark line were probably coming from pieces of metal on the slit that I remove....
Did you ever try to polish your slit from surplus shed? Any recommendation?
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Re: 21 June : Ha with SHG
I didn't try to polish the slit because I am afraid of making it worse.
I just use a tooth stick to try to remove a much dust as I can.
By using the artificial flat field, the horizontal bands can be removed quite well.
I just use a tooth stick to try to remove a much dust as I can.
By using the artificial flat field, the horizontal bands can be removed quite well.
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- DSobserver
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Re: 21 June : Ha with SHG
so same treatment as dark line?
I don't have Photoshop...Do you know if GIMP or imageJ can do it?
I don't have Photoshop...Do you know if GIMP or imageJ can do it?
Re: 21 June : Ha with SHG
I think GIMP should do the job.
However last December Adobe released for free the CS2 version of Photoshop.
http://www.techspot.com/downloads/3689- ... p-cs2.html
However last December Adobe released for free the CS2 version of Photoshop.
http://www.techspot.com/downloads/3689- ... p-cs2.html
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Re: 21 June : Ha with SHG
Alex, Wah and Vincent:
I doubt that Photoshop CS2 has a "divide" blending mode. I have CS4 which doesn't have this feature. ImageJ has a versatile "image calculator" function which allows you to load two images and subtract, divide, etc. I've had varying success with it, partly because I don't have Wah's finesse in treating the images!
Peter.
I doubt that Photoshop CS2 has a "divide" blending mode. I have CS4 which doesn't have this feature. ImageJ has a versatile "image calculator" function which allows you to load two images and subtract, divide, etc. I've had varying success with it, partly because I don't have Wah's finesse in treating the images!
Peter.
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Re: 21 June : Ha with SHG
Hi DSobserver,
Are you a new SHG maker/user ?
well, nice pictures and processing
Are you a new SHG maker/user ?
well, nice pictures and processing