Lunk CaK first mod

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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allhoest
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Lunk CaK first mod

Post by allhoest » Sun Apr 08, 2018 3:33 pm

After the internal inspection of the Lunt CaK, I went for a mod.
The filters for this test are as follow:
- Lacerta 2" Herschell with Brewster angle
- An Astronomic blue 2c, to cut any non necessary wavelength, including the IR (at up up to 1000nm)
- A Baader KLine
- The last filter of the Lunt CaK

The scope is a 100mm refractor + a x2 big barlow.
Only stacking and wavelets are provided. The same amount of wavelets for both presented pics.

Here, with the CaK mod setup:
Image




Here, with the gemuine CaK filter:
Image






:seesaw
I wonder the non uniformity of the CaK mod setup.
I find this mod setup providing less contrasted view.


CS
Alex
2018-Apr-06
Televue NP101
Powermate x2
Lunt CaK 1800
ASI174

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marktownley
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Re: Lunk CaK first mod

Post by marktownley » Sun Apr 08, 2018 7:57 pm

Interesting results!
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

allhoest
Im an EXPERT!
Im an EXPERT!
Posts: 207
Joined: Sun Mar 22, 2015 7:48 pm

Re: Lunk CaK first mod

Post by allhoest » Tue Apr 10, 2018 5:07 pm

Mark, you have experience in modded CaK, I think.
Do you have any hint regarding the non uniformity?

CS
Alex

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marktownley
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Re: Lunk CaK first mod

Post by marktownley » Tue Apr 10, 2018 7:36 pm

Looks to me like there is some vignetting going on
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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