Hello ,
today a wonderfull day with no haze nor clouds.. and a beautifull prominence...
I tried the UV again and it was quite hard as I had to defocuse the refractor of about 12mm to get a sharp image of the prominence with 2 gratings : a 1200 lines @412nm and a 600 lines@ 500 nm...
But i'm pretty sure I would get better results once the collimator is refocused too in the UV.
H alpha with 600 lines /mm
with 1200 lines/mm
with the 1800 lines :
and In the UV :
1200 lines @ 412nm
and the 600 lines
Chris
June 04 ,2023 ; prominence in UV with spectro coronagraph
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June 04 ,2023 ; prominence in UV with spectro coronagraph
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: June 04 ,2023 ; prominence in UV with spectro coronagraph
Great
regards Rainer
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
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Re: June 04 ,2023 ; prominence in UV with spectro coronagraph
great!
i knew you could do it
like that "other line on to will look for that next time I try
unfortunately clouds here today
i knew you could do it
like that "other line on to will look for that next time I try
unfortunately clouds here today
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Re: June 04 ,2023 ; prominence in UV with spectro coronagraph
Thanks very much But I will rebuilt my collimator with a focuser because to get sharper images the collimator should be set according the wavelength. it doesnt make much difference in the visible range but when its UV light it makes a big difference. Especially when the focal lenght of the collimator gets bigger..
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM