proms of today June 16th 2022...evolution and comparison

I LOVE finding out about different ways to appreciate the Sun and light in general. Use this forum to post your info or questions about various outside the mainstream ways to appreciate our life giving star!
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ChrisHalpha2017
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proms of today June 16th 2022...evolution and comparison

Post by ChrisHalpha2017 »

Hello again..

I could again ckeck on the bog prominence that i started to observe this morning....but this time , as I had more time to image the sun I (again) tried both gratings in my spectro coronagraph..and guess who won the resolution contest..?

I let you judge....
600 tmm classic  stacked 2 ++++++++  PHOTO 2.jpg
600 tmm classic stacked 2 ++++++++ PHOTO 2.jpg (513.58 KiB) Viewed 431 times
13_43_35_Soleil  H alpha_16_06_22_F2213-2749   STACKED  PHOTO 5 b.jpg
13_43_35_Soleil H alpha_16_06_22_F2213-2749 STACKED PHOTO 5 b.jpg (317.32 KiB) Viewed 431 times

Chris


spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: proms of today June 16th 2022...evolution and comparison

Post by ChrisHalpha2017 »

With the 1200 lines/mm the image is "squashed" that its more blurry as each point of the image is more stretched due to higher dispersion.....

This works only if you use the "wide slit method.

Chris


spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: proms of today June 16th 2022...evolution and comparison

Post by Montana »

The first image is absolutely spectacular, so clean and detailed. First class!!

:bow :hamster:

Alexandra


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Re: proms of today June 16th 2022...evolution and comparison

Post by ChrisHalpha2017 »

awwwwwwwwww thank youuuuuuuuuuuuuuuu :)

the first image is the one produced with the 600 lines/mm grating .... there is less anamorphose (almost none) and less dispersion so its sharper.


spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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