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Old 28-01-2019, 12:01 PM
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Merlin66 (Ken)
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Solar activity 28 Jan 2019t

Using the SM60/ED80/PST DS/x2.5PM/ASI 174. The AR and a few proms.
Set-up the Omega CaK stack - quite pleased with the result, shows the sunspot umbra and penumbra.

(I had to stop down the ED80 to 60mm for the CaK)
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Last edited by Merlin66; 28-01-2019 at 02:12 PM.
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Old 28-01-2019, 01:20 PM
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Marke (Mark)
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Nice Ken all cloudy here so looks like I'm done till next weekend at least
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Old 28-01-2019, 01:46 PM
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Quote:
Originally Posted by Merlin66 View Post
Using the SM60/ED80/PST/ x2.5PM/ASI 174. The AR and a few proms.
Set-up the Omega CaK stack - quite pleased with the result, shows the sunspot umbra and penumbra.

(I had to stop down the ED80 to 60mm for the CaK)
Well done Ken. I noticed that white spot on the Gong website a short while ago. Have to get my Solarmax 60 out for a look now the weather has cleared after cyclone Riley passed by
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Old 28-01-2019, 02:11 PM
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Merlin66 (Ken)
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Yeah,
Now it the time for all solar scope users to get some practice, may be a while before we see the next AR sunspot......
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Old 29-01-2019, 05:05 AM
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GUS.K (Ivan)
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Great captures Ken, thanks for sharing.
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Old 29-01-2019, 09:43 AM
N1 (Mirko)
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Ken, your work is admirable.
The CaK stack is on my list of things to look into further when family duties show any signs of letting up (so may not happen this decade)
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Old 29-01-2019, 10:05 AM
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Merlin66 (Ken)
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Thanks guys, appreciated!!
It's not the best place for observing..21mtr above the Bay, the beach is only 500 mtr away, but my wife loves the place.
Such is life.
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Old 29-01-2019, 07:16 PM
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Good to see a bit of activity Ken.
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Old 29-01-2019, 07:35 PM
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AstroJunk (Jonathan)
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Sweet!
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Old 29-01-2019, 10:03 PM
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Merlin66 (Ken)
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Thanks guys!
I couldn't afford a commercial CaK scope so I made my own from Omega CaK filters and a Baader Blue CCD filter as an ERF.
Seems to work reasonable well in focal ratios >f20 (I think the optimum is >f30)
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Old 30-01-2019, 12:00 AM
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