Appenzellersun, CaK filter change

Frankenscope? Let's see it!***be advised that NOTHING in this forum has been safety tested and you are reading and using these posts at your own peril. blah, blah, blah... dont mess around with your eyesight when it comes to solar astronomy. Use appropriate filtration at all times...
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swisswalter
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Appenzellersun, CaK filter change

Post by swisswalter » Thu Sep 25, 2014 2:13 am

Hi freaks

the summer was no good here, so very little chance to try out mods but now we had the second autumn day with sunshine :)

CaK full disk with UV/IR cut and K-line (23.09)
CaK_23092014_104650_bw.jpg
CaK full disk with IR-cut and K-line (24.09)
CaK_24092014_104406_bw.jpg
CaK full disk with additional UVB filter (baader venus filter) (24.09)
plusvenus_24092014_104956_bw.jpg
CaK full disk without K-line, only baader venus filter (24.09)
nurvenus_24092014_105527_bw.jpg
my conclusions: with my setup, it is of advantage to not use a UV/IR cut filter, instead I should use only an IR cut filter and replace the K-line double stack by a single UVB filter (Venus). Tests with a single K-Line have to be done though asap
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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grimble_cornet
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Re: Appenzellersun, CaK filter change

Post by grimble_cornet » Thu Sep 25, 2014 6:25 pm

Very interesting results Walter - thanks for sharing.
.

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Mike Garbett

Selection of Solar and Deep Sky images on Flickr: https://www.flickr.com/photos/mikegarbett/

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swisswalter
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Re: Appenzellersun, CaK filter change

Post by swisswalter » Fri Sep 26, 2014 5:43 pm

Hi Mike

thank you very much
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: Appenzellersun, CaK filter change

Post by marktownley » Fri Sep 26, 2014 10:15 pm

interesting to see this, a venus filter is on my list too...
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Re: Appenzellersun, CaK filter change

Post by thesmiths » Fri Sep 26, 2014 10:28 pm

Walter, just to be clear, you're using the yellow Lunt stack in combination with the filters mentioned here?

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Re: Appenzellersun, CaK filter change

Post by swisswalter » Sat Sep 27, 2014 7:21 am

Hi Douglas

yes. The setup is as follows lunt hot mirror, lunt Cak stack filter, (K-line, or Venus or both), PST CaK filter #1, IR-cut
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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