hello,
yesterday there was a fantastic prominence when I got up early in the parisian morning.. The sky was very hazy but still I could catch it for a few minutes..
Chris
huge prominence yesterday May 18th 2022
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huge prominence yesterday May 18th 2022
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: huge prominence yesterday May 18th 2022
Hi Chris
Nicely done, how easy is it to keep the Chronograph aligned when your imaging.
There was a Lillie Chronograph with a Vixen 80mm on eBay recently
Kind regards
Richard
Nicely done, how easy is it to keep the Chronograph aligned when your imaging.
There was a Lillie Chronograph with a Vixen 80mm on eBay recently
Kind regards
Richard
Baader DERF 90 & 160. Vixen SP102M Moonlite, Takahashi TOA130 Feathertouch 3.5, Takahashi FSQ106N, Daystar Quantum SE .4ang, Apollo Max, ZWO ASI 174MM. 2600mm, 178MM, Lumenera Skynx & Infinity 2
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Re: huge prominence yesterday May 18th 2022
Thank you very much..
Actually its not a coronagraph but a wide slit spectroscope.
The old technique before h alpha filters were invented.
I've been using it for 24 years now.
And its a bit tricky and sensitive to keep the sun hidden by hand but as the occulting slit is bigger than the sun image at the focal plan its way much easier .
Actually its not a coronagraph but a wide slit spectroscope.
The old technique before h alpha filters were invented.
I've been using it for 24 years now.
And its a bit tricky and sensitive to keep the sun hidden by hand but as the occulting slit is bigger than the sun image at the focal plan its way much easier .
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: huge prominence yesterday May 18th 2022
Very good indeed!
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: huge prominence yesterday May 18th 2022
These results are always fun to see.
Great revival of an old method. I remember being intrigued by the device of Gene Frazier described in Scientific American’s “Amateur Scientist” column of March 1974. Same principle as yours but with some enhancement of dispersion by using a 2nd grating.
Cheers.
Peter
Great revival of an old method. I remember being intrigued by the device of Gene Frazier described in Scientific American’s “Amateur Scientist” column of March 1974. Same principle as yours but with some enhancement of dispersion by using a 2nd grating.
Cheers.
Peter