cak present and past
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Re: cak present and past
It came out well JOhn! Love the old records too!
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Re: cak present and past
Fabulous and nice bit of history too, following in the footsteps of the great
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Re: cak present and past
what cah and k lines look thru my UV to visible converter eyepiece
and real dead sun today
--- mmm -- need to clean slit a bit
and real dead sun today
--- mmm -- need to clean slit a bit
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Re: cak present and past
These are really detailed, certainly the bottom image is a cracker I did laugh at the gnat
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Re: cak present and past
I love these old plates. Well done !
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
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http://planetary-astronomy.com/
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Re: cak present and past
Nice!
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Re: cak present and past
Wow!! nice to see the spectral lines and the resulting CaK full disc and the comparison with the Omega filters too, great work
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Re: cak present and past
Nice additions John!
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Re: cak present and past
Very nice indeed is that a new little AR in the centre of the disc?
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Re: cak present and past
Good captures John
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Re: cak present and past
Nice selection! You got the filament well.
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Re: cak present and past
It's quiet again!
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Re: cak present and past
Great images!! not quite dead yet then a nice filament and mini active region
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Re: cak present and past
Some of them are cycle 25 - the spectroscopes like this delve deeper than telescope/filter setups...
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Re: cak present and past
ha! - Mark your right
I didn't notice until you guys pointed them out
yea with 2400 lpmm grating - caK caH more narrow in SHG than commercial stuff even though I have ability to double stack caK line with filters
I didn't notice until you guys pointed them out
yea with 2400 lpmm grating - caK caH more narrow in SHG than commercial stuff even though I have ability to double stack caK line with filters
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Re: cak present and past
Nice additions John
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Re: cak present and past
Good result!
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Re: cak present and past
These are great! but not quite dead, I am sure I can see some hot spots in the high latitudes of the south. I hope these continue to form and give us more cycle 25 spots even if they are short lived.
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Re: cak present and past
Excellent as always John like Alexandra says keep an eye open for those bright points in high latitudes.
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Re: cak present and past
7 16 caK its quiet up there maybe one of you guys and do a sun dance to wake it up
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Re: cak present and past
It definitely need a sun dance - give it a week or so
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Re: cak present and past
Good catch of the filaments!
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Re: cak present and past
Nice work the area of plage in the middle is gradually dwindling with each rotation.
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