Mod Lunt LS80 on AR150/F6 and AR90/F10

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pupak
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Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by pupak »

Greetings to all lovers of the Sun from Zcechia.
I tried two modifications of the LUNT LS80THa solar telescope.
The first is on the AR150/F6 Individual and the second on the AR90/F10 with the LS80DSII module.
The AR150 has a frontal Baader D-ERF 160mm and a primary etalon DS80 with its own ERF filter.
The AR90 has a DSII etalon and a LUNT 2" interbal ERF filter.
I think both systems are good to use.
The mount is a light EQ-HD with harmonic gearboxes of our own design.
Sorry for my poor english.
Some sample.
Attachments
AR150 TV5x IMX 432
AR150 TV5x IMX 432
zz4c.jpg (1.64 MiB) Viewed 1892 times
AR90 TV5x IMX 432
AR90 TV5x IMX 432
ccc kopie.jpg (1.64 MiB) Viewed 1892 times
ar90a.jpg
ar90a.jpg (193.82 KiB) Viewed 1892 times
ar150c.jpg
ar150c.jpg (179.93 KiB) Viewed 1892 times
DS mode
DS mode
ar150e.jpg (234.03 KiB) Viewed 1892 times
Last edited by pupak on Mon Jul 25, 2022 9:40 am, edited 1 time in total.


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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by marktownley »

That looks to be a great mod that is producing great results.

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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by pupak »

Primary etalon LS80 and AR150/F6 is an ideal combination. DSII and AR90/F10 is already a compromise in terms of collimation lens, but when using Barlow 2-5x it gives very good results.
I am going to convert N200 F4-F8 with D-ERF 180 and Quark, possibly LS80DSII. I'm curious to see what results I'll get.


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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by Petrus »

Looking good! I'm curious about the adapter between LS80 etalons and AR150/F6. These are custom made I assume?


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LS80THa DSII - Calcium II K module 12mm - Lunt Herschel wedge 1.25" - Quark Chromosphere - Solarscout Quark - Sol'Ex
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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by pupak »

Yes, the adapter is self-made. It is a cylinder with a holder for a 2" ERF filter into which the etalon is inserted and screws are secured around the perimeter. The ERF filter is tilted by approx. 7 degrees.
I design and manufacture CNC machines, so I have machinery. I also manufacture mounts with harmonic gearboxes.
It is my hobby.
My latest crazy idea. Newton 400mm with uncoated mirror on my largest HD mount. Unfortunately, I don't have a suitable mirror yet.
Attachments
Harmonic drive mount for 65kg sun telescop
Harmonic drive mount for 65kg sun telescop
x4.jpg (772.3 KiB) Viewed 1823 times


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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by pupak »

Does anyone know the exact difference in the optical properties (schema) of the etalon LS80THa and LS80THaDSII. They have a different diameter, that's obvious, but what about collimating optics?


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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by marktownley »

That mount is gorgeous!

The collimating optics should be the same in both - they work at f7.


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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by pupak »

Thank you for your opinion.
On the forums, opinions on the similarity of the etalons are quite different. In principle, however, they should be the same, even if the AR150/F6 is affected by the smaller internal diameter of the DSII.


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Re: Mod Lunt LS80 on AR150/F6 and AR90/F10

Post by DavidP »

Your mount is a work of art.


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