Greetings Everyone.
Amidst finishing up my Mercury transit images, I thought I'd post these spectroheliograms from April 30.
I have some more processing to do and hope to add some more images in the next few days.
Cheers.
Peter.
April 30 Spectroheliograms
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Re: April 30 Spectroheliograms
Interesting to see such a wide range of wavelengths Peter.
Thanks for sharing the results of your experiments.
Thanks for sharing the results of your experiments.
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Mike Garbett
Selection of Solar and Deep Sky images on Flickr: https://www.flickr.com/photos/mikegarbett/
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.
Mike Garbett
Selection of Solar and Deep Sky images on Flickr: https://www.flickr.com/photos/mikegarbett/
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Re: April 30 Spectroheliograms
These are excellent Peter, really illustrates well the difference when not 'on band' on these spectral lines.
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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: April 30 Spectroheliograms
This is an excellent series, well done, some lovely comparisons
Alexandra
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Re: April 30 Spectroheliograms
Once again Peter, excellent results well presented.
Have you tried John's synthetic flat fielding process available in the latest BASS Project release?
Have you tried John's synthetic flat fielding process available in the latest BASS Project release?
"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: April 30 Spectroheliograms
Cheers and thanks for the comments, everyone.
Ken: I see you noticed that the spectroheliograms are a little lacking with regard to uniformity! I'd be interested in the flat-fielding process you're referring to. Can you direct me to a description of it?
Peter.
Ken: I see you noticed that the spectroheliograms are a little lacking with regard to uniformity! I'd be interested in the flat-fielding process you're referring to. Can you direct me to a description of it?
Peter.
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Re: April 30 Spectroheliograms
Peter,
The BASS Project software is available for download from the BASS Yahoo group (I can't seem to provide a link on the iPad) The latest instruction manual details John's synthetic flat fielding process.
Hope that helps.
Ps It's also fully explained with examples in the new book.
https://uk.groups.yahoo.com/neo/groups/ ... s/messages
The BASS Project software is available for download from the BASS Yahoo group (I can't seem to provide a link on the iPad) The latest instruction manual details John's synthetic flat fielding process.
Hope that helps.
Ps It's also fully explained with examples in the new book.
https://uk.groups.yahoo.com/neo/groups/ ... s/messages
"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