CaK, Lunt or Daystar?

Use this section to discuss "standard" Baader/Coronado/ Lunt SolarView/ Daystar, etc… filters, cameras and scopes. No mods, just questions/ answers and reviews.
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TareqPhoto
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CaK, Lunt or Daystar?

Post by TareqPhoto »

Hi,

As long i am going with my equipment collecting and getting ready seriously for the winter coming here and getting more into solar imaging i am just deciding to not wait until next year to add things, i got a budget 2 days ago and i ordered a second scope for DSO and that cleared my plan now for going back to solar imaging gear, and the main thing i am thinking about to add now is to have a real Ha-CaK-line filter or tool so that i can have that result later, and i came up with almost two options of makers after all, and i can't decide which one.

1. Lunt CaK module, with this i have two path, first is which blocking filter to go with [from 600 up to 1800] and which design, Straight-Thru or Diagonal.

2. Daystar Calcium H-Line Quark, i think there is only one model of this.

Both above sounds to give nice results, i am more leaning towards Lunt one, either 600 or 1200 really, but i want to ask to make sure what to choose from experts over here, so what do you recommend?!!!

I will use any kind oe size of scopes, maybe from 40mm up to 150mm if i buy that scope.

Thanks


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Re: CaK, Lunt or Daystar?

Post by Bob Yoesle »

Lunt or Solar Spectrum would be my choices.


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Re: CaK, Lunt or Daystar?

Post by TareqPhoto »

Bob Yoesle wrote: Sat Aug 13, 2022 4:51 am Lunt or Solar Spectrum would be my choices.
Ok, Lunt it is then, so which one thou??!!


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Re: CaK, Lunt or Daystar?

Post by Bob Yoesle »

The size is related to your focal length. The longer the FL, the larger the filter you should get. The module numerical value roughly translates to the max FL you can get a fill-disc un-vignetted image.


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Re: CaK, Lunt or Daystar?

Post by marktownley »

Get the biggest Lunt you can afford Tareq!


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Re: CaK, Lunt or Daystar?

Post by Merlin66 »

A viable alternative that not only gives CaK imaging but all other solar wavelengths is to use a Mini Spectroheliograph.
Much, much cheaper than the commercial filters and much more capable.
Check out the Sol'Ex website for details.
http://www.astrosurf.com/solex/sol-ex-p ... on-en.html


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Re: CaK, Lunt or Daystar?

Post by TareqPhoto »

Bob Yoesle wrote: Sat Aug 13, 2022 2:41 pm The size is related to your focal length. The longer the FL, the larger the filter you should get. The module numerical value roughly translates to the max FL you can get a fill-disc un-vignetted image.
I know that, but i won't use only the biggest FL, also from what i read it is mentioning like a fixed aperture but variant FL, strange, so if i buy something like 150mm aperture then i stopped it down to 120 or 100mm with something like 1000-1200mm focal length and then using a telecentric Barlow, what should buy?

Also i am asking about which module, the straight thru one or the diagonal one??!!


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Re: CaK, Lunt or Daystar?

Post by TareqPhoto »

marktownley wrote: Sat Aug 13, 2022 7:47 pm Get the biggest Lunt you can afford Tareq!
I don't know which one i can afford, if next month or after next month then the least one, if in November with the new budget maybe up to 1200 version only, if i didn't buy a scope and only buy the module then i can go to 1800 version, tough decision.


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Re: CaK, Lunt or Daystar?

Post by marktownley »

I thought you had quite a few scopes already? Just buy the biggest module.

I'd buy straight through.


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Re: CaK, Lunt or Daystar?

Post by TareqPhoto »

Merlin66 wrote: Sun Aug 14, 2022 12:21 am A viable alternative that not only gives CaK imaging but all other solar wavelengths is to use a Mini Spectroheliograph.
Much, much cheaper than the commercial filters and much more capable.
Check out the Sol'Ex website for details.
http://www.astrosurf.com/solex/sol-ex-p ... on-en.html
Thank you very much


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Re: CaK, Lunt or Daystar?

Post by TareqPhoto »

marktownley wrote: Sun Aug 14, 2022 10:32 am I thought you had quite a few scopes already? Just buy the biggest module.
Well, to clarify that, my scopes are for DSO and planetary, mostly are reflectors and added many refractors as well but all at small or medium sizes, it means i can go with the least one then, but if i buy a large refractor then this is a bit different requirement, so to me it is like i should choose between smallest scopes or largest scope.

I am also thinking about the straight thru one, i feel the diagonal one is more for visual which i don't think i will do visual with CaK anyway.


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