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Maurice
17-12-2023, 07:02 PM
Hi

Attached is an image of the sun taken today from Melbourne.

Stack of the best 8 of 32 frames in Autostakkert3!

Decovolution with Astrosurface.

Image data taken through a home built spectroheliograph centred at Ha through a 100MM Skywatcher ED at f/9.

Disc reconstructed using Doug Smith SHG software.
ROI of 3120 x 150 pixels scanning at 300FPS.
2400l/mm Optometrics diffraction grating.
Spectral sampling at 0.05A/pixel.

Image reduced in size to 68% of original - unfortunately compressed significantly for presentation here.

Slightly better version here:

https://flic.kr/p/2pmWJFN

cheers
Maurice

Saturnine
18-12-2023, 10:23 PM
Very nice work from the spectroheliograph, lots of great detail in the filaments and proms and active areas. Must be happy with the way it performs.
Thanks for sharing.

John W
19-12-2023, 11:45 AM
Nice image Maurice - lots of detail, well done.
Regards from John W.

Maurice
21-12-2023, 09:53 PM
Thanks Jeff.
Yes, the SHG has exceeded my expectations. Its something a bit different and fun to use.



Thank you John.