Coming back...
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Coming back...
After a long leave, I am now redesigning the spectroscopes and creating the parts by using a 3D printer.
Some optical glass slits have been used also, I hope the overall image quality can be improved.
Some optical glass slits have been used also, I hope the overall image quality can be improved.
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Re: Coming back...
Fantastic Wah! I'm looking forward to the results.
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: Coming back...
Wah,
Glad to see you back.
I think 3D printing is the way forward. Paul has been active producing his LowSpec spectroscope design, a great introduction to slit spectroscopy.
Are you going to update your SLM software to allow larger files???
Glad to see you back.
I think 3D printing is the way forward. Paul has been active producing his LowSpec spectroscope design, a great introduction to slit spectroscopy.
Are you going to update your SLM software to allow larger files???
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
Which file format and what size do you need?
As far as I remember, I was using an external library for avi format which cannot handle larger size files.
Then a newer version could handle mono-color ser files without problems (I guess).
As far as I remember, I was using an external library for avi format which cannot handle larger size files.
Then a newer version could handle mono-color ser files without problems (I guess).
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Re: Coming back...
Wah,
I've been trialling a fast frame ASI 174MM camera on the SHG, using the x2 RA speed to reduce acquisition time. ( Using an ROI just enough to get the spectral line, I can get up to 400 fps)
The SER files can be up to 3Gb in size....this seems to be an issue for SLM?
Ken
I've been trialling a fast frame ASI 174MM camera on the SHG, using the x2 RA speed to reduce acquisition time. ( Using an ROI just enough to get the spectral line, I can get up to 400 fps)
The SER files can be up to 3Gb in size....this seems to be an issue for SLM?
Ken
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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I think it just didn't run.....
(Been a while now due to weather and other issues. I could probably find the file on the computer and check if needed.
(Been a while now due to weather and other issues. I could probably find the file on the computer and check if needed.
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
Wah,
Give me some time to find the files.
I'll email you when I'm ready.
ken
Give me some time to find the files.
I'll email you when I'm ready.
ken
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
Welcome back. Looking forward to seeing the results from your new kit.
Stu
Stu
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: Coming back...
Wah,
""
Some optical glass slits have been used
""
The OVIO reflective slit plates????
""
Some optical glass slits have been used
""
The OVIO reflective slit plates????
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
Wah,
I've sent you an email with the SLiM errors, and sent a copy of the AVI file (930Mb) to dropbox
https://www.dropbox.com/s/rrjtee31vwf1h ... p.avi?dl=0
Ken
I've sent you an email with the SLiM errors, and sent a copy of the AVI file (930Mb) to dropbox
https://www.dropbox.com/s/rrjtee31vwf1h ... p.avi?dl=0
Ken
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- Phil Rousselle
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Re: Coming back...
Hi
Very nice job Wah !
I've also a 3D printer, and it's a very good tool to make parts for SHG
Phil
Very nice job Wah !
I've also a 3D printer, and it's a very good tool to make parts for SHG
Phil
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Re: Coming back...
I just experienced the error myself this morning, and found that it should be a setting problem. I mistakenly set the project as X86 rather than X64, so it could only allocate a very limited amount of memory. I will post a recompiled version later and let you try.Merlin66 wrote: ↑Tue Jun 09, 2020 2:08 am Wah,
I've sent you an email with the SLiM errors, and sent a copy of the AVI file (930Mb) to dropbox
https://www.dropbox.com/s/rrjtee31vwf1h ... p.avi?dl=0
Ken
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Wha,
Thanks for the feedback.
Your continued support for the SHG is appreciated.
Look forward to trying the new version.
Thanks for the feedback.
Your continued support for the SHG is appreciated.
Look forward to trying the new version.
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
https://drive.google.com/file/d/1Gnfkx2 ... sp=sharing
Hi Merlin, are you able to download the file from the above link?
Hi Merlin, are you able to download the file from the above link?
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Re: Coming back...
I’m in transit....I’ll download later when I get home.
Many thanks.
Many thanks.
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
Wah,
Downloaded OK
I'll try it ASAP and give you feedback.
Many thanks,
ken
Downloaded OK
I'll try it ASAP and give you feedback.
Many thanks,
ken
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
Wah,
Unfortunately it still shows the same error messages.
Looking at the "Unhandled exception" - Object reference not set to an instance of an object
There seems to be references to d:\projects\SLiM_RemovedProcessing\form1.cs.
I assume this was your working directory????
Let me know how I can assist.
regards,
Unfortunately it still shows the same error messages.
Looking at the "Unhandled exception" - Object reference not set to an instance of an object
There seems to be references to d:\projects\SLiM_RemovedProcessing\form1.cs.
I assume this was your working directory????
Let me know how I can assist.
regards,
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
Wah,
Error message shows lines 1753, 2044, 3286
I've attached a copy of the error screen. ken
Error message shows lines 1753, 2044, 3286
I've attached a copy of the error screen. ken
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
I just downloaded this file, it is "AVI" format.Merlin66 wrote: ↑Tue Jun 09, 2020 2:08 am Wah,
I've sent you an email with the SLiM errors, and sent a copy of the AVI file (930Mb) to dropbox
https://www.dropbox.com/s/rrjtee31vwf1h ... p.avi?dl=0
Ken
Can you try mono "SER" instead?
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Re: Coming back...
I can process the video after converting and rotating the AVI to SER.
I only program to process horizontal lines, so you need to capture the lines horizontally.
I only program to process horizontal lines, so you need to capture the lines horizontally.
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Phil,
SLiM software developed by Wah! provides the means to convert an AVI/SER video of a spectral line to a spectroheliogram.
It can correct for slant and smile and offers different extraction widths. In my experience it needs the video cropped to the line of interest (VDub) prior to using.
SLiM software developed by Wah! provides the means to convert an AVI/SER video of a spectral line to a spectroheliogram.
It can correct for slant and smile and offers different extraction widths. In my experience it needs the video cropped to the line of interest (VDub) prior to using.
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Coming back...
I've forgotten the "Horizontal mode" checkbox myself, it seems still work without the tick.
It is suggested to use SER format rather than AVI because it seems won't crash for larger/wider videos and also support 16bit per pixel which has higher dynamic range.
It seems the "o" doesn't show correctly on your screen. I have extended the size of the button and built the solution again.
https://drive.google.com/file/d/1125tvY ... sp=sharing
It is suggested to use SER format rather than AVI because it seems won't crash for larger/wider videos and also support 16bit per pixel which has higher dynamic range.
It seems the "o" doesn't show correctly on your screen. I have extended the size of the button and built the solution again.
https://drive.google.com/file/d/1125tvY ... sp=sharing
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Wha,
Thanks.
I'll try that as soon as the weather allows. I'm testing a new SHG (hence the previous out of focus result) hopefully the next results will be better.
Thanks.
I'll try that as soon as the weather allows. I'm testing a new SHG (hence the previous out of focus result) hopefully the next results will be better.
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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I am struggling to tune my SHG back for better image quality but the results are still disappointing.
I think I have to disassemble it and check each element to make sure they are all in good condition...
I think I have to disassemble it and check each element to make sure they are all in good condition...
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Wah,
Always challenging experience!
I try to get the spectrograph section working first. Giving a clean, well focused H alpha line.
Then work with the slit to give minimum usable gap.....
Final the scope should work at the same focal ratio as the spectrograph ie f10 scope to f10 spectrograph.
My "challenge" at the moment is getting a well focused solar image on the slit......
Always challenging experience!
I try to get the spectrograph section working first. Giving a clean, well focused H alpha line.
Then work with the slit to give minimum usable gap.....
Final the scope should work at the same focal ratio as the spectrograph ie f10 scope to f10 spectrograph.
My "challenge" at the moment is getting a well focused solar image on the slit......
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Because my SHG is based on Littrow design, it can easily introduce some coma + astigmatism aberration.
The slit I am using is fixed-width glass slit, I think I need to remove it first and replace the grating to a mirror to check the problem.
The slit I am using is fixed-width glass slit, I think I need to remove it first and replace the grating to a mirror to check the problem.
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Wah,
Shouldn't be any coma...but astigmatism, probably; could also be vignetting from the pick off mirror. Remember the f ratios must match.
Shouldn't be any coma...but astigmatism, probably; could also be vignetting from the pick off mirror. Remember the f ratios must match.
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- Phil Rousselle
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I replaced the slit with a pinhole last night, and checked the 0 order image.
There was some blur on the edge, while some red in the vertical direction and some green in the horizontal direction.
I tried to tilt the lens but no big help. Now I have no idea how to solve the problem...
There was some blur on the edge, while some red in the vertical direction and some green in the horizontal direction.
I tried to tilt the lens but no big help. Now I have no idea how to solve the problem...
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Don't know.....
Need to think about it.
Which grating are you using?
What's the focal length of the collimator?
Need to think about it.
Which grating are you using?
What's the focal length of the collimator?
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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I just captured the pinhole image, and now suspect that the aberrations are from the cheap lens.
The previous good image could be due to part of the lens being blocked by the original tube and reduced some aberration.
The previous good image could be due to part of the lens being blocked by the original tube and reduced some aberration.
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