Lunt CaK module bandwide?
- swisswalter
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Re: Lunt CaK module bandwide?
Hi Wah
I don't think the sensitivity slope is inversed between 393nm and 396nm, ergo the opposite should be the case, if there is a noticable difference at all
I don't think the sensitivity slope is inversed between 393nm and 396nm, ergo the opposite should be the case, if there is a noticable difference at all
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Re: Lunt CaK module bandwide?
Walter, the sensitivity of my camera (120MM) definitely decreases slightly between H (3968) and K (3934). Not a huge amount, but it is noticeable.
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Re: Lunt CaK module bandwide?
Hi Douglas
yes you are right and Wah too. I thought just the other way round . But I do not think that we can make out a difference in the final pic.
yes you are right and Wah too. I thought just the other way round . But I do not think that we can make out a difference in the final pic.
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
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- marktownley
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Re: Lunt CaK module bandwide?
I've thrown in another CaK disk in the comparison series of images further up this post, just adds confusion!
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Re: Lunt CaK module bandwide?
Hi Mark
a fery fine shot with the f/5 gun.
quote
Now, I wonder what focal ratio the Lunt CaK wedge was designed to work at to deliver a filter centred on 393.37nm?
endquote
that is a very good question!
a fery fine shot with the f/5 gun.
quote
Now, I wonder what focal ratio the Lunt CaK wedge was designed to work at to deliver a filter centred on 393.37nm?
endquote
that is a very good question!
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
from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa