Etalon size in a Lunt Solar LS50THa PT

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Etalon size in a Lunt Solar LS50THa PT

Post by Valery »

Hi solar gangs,

Does anybody know the etalon size in the Lunt Solar LS50THa Pressure Tuned telescope ?


Valery.


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by marktownley »

No, but i'm already considering buying one to take apart ;)


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by Valery »

marktownley wrote:No, but i'm already considering buying one to take apart ;)
Why not order it today?


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by solarchat »

the internal etalon is 35mm and the external double stacker is 50mm


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by swisswalter »

Hi Modders

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Re: Etalon size in a Lunt Solar LS50THa PT

Post by marktownley »

35mm etalon to 50mm aperture - that's the best ratio yet of any of the Lunt scopes.

50mm aperture, that's as good as the same size as a 2" eyepiece holder ;)


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by Valery »

marktownley wrote:35mm etalon to 50mm aperture - that's the best ratio yet of any of the Lunt scopes.
Yes, this is nice. But Lunt specified <0.75A instead of <0.7A for other etalons. Big difference at such band wide!
When we talking about the difference between 0.35A and 0.3A this is one thing - difficult to distinguish, but <0.75 and <0.7A
can be very noticeable.


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by marktownley »

For the same price as a Quark I think it will make a fine full disk scope.


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by Valery »

marktownley wrote:For the same price as a Quark I think it will make a fine full disk scope.
+1


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Re: Etalon size in a Lunt Solar LS50THa PT

Post by axlefoley »

marktownley wrote:For the same price as a Quark I think it will make a fine full disk scope.
Yeah looking back now I am thinking I should of got a Lunt 50, still won't see the Quark for a month.


Alan
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