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:
Here, with the gemuine CaK filter:
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
Lunk CaK first mod
- marktownley
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Re: Lunk CaK first mod
Interesting results!
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!
- marktownley
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- Posts: 42637
- Joined: Tue Oct 18, 2011 5:27 pm
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Re: Lunk CaK first mod
Looks to me like there is some vignetting going on
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!