Etalon size in a Lunt Solar LS50THa PT

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Valery
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Etalon size in a Lunt Solar LS50THa PT

Post by Valery » Tue May 27, 2014 8:55 am

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 » Tue May 27, 2014 9:30 am

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 » Tue May 27, 2014 10:51 am

marktownley wrote:No, but i'm already considering buying one to take apart ;)
Why not order it today?
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

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Re: Etalon size in a Lunt Solar LS50THa PT

Post by solarchat » Tue May 27, 2014 2:50 pm

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 » Tue May 27, 2014 8:23 pm

Hi Modders

Attention, big brother is watching us very closely ;)
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Re: Etalon size in a Lunt Solar LS50THa PT

Post by marktownley » Tue May 27, 2014 8:32 pm

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 » Tue May 27, 2014 11:14 pm

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 » Wed May 28, 2014 6:33 am

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 » Wed May 28, 2014 3:20 pm

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 » Wed May 28, 2014 10:07 pm

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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