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ETX 125/Solar Telescope Modification.

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#1 despet



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Posted 12 November 2007 - 03:48 AM

I should be obliged if you can inform me what components of CORONADO I need in order to modify an ETX125 to SOLAR TELESCOPE and the modification diagram.
I have this solution:

SM40 / BF15 / TMax
adapter plate ETX125 for SM40
Eyepiece holder 1 1/4" SC

But I don’t know if it should works to take Solar Images.

Thank you very much for your kind assistance.

#2 Philip Pugh

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Posted 11 January 2008 - 03:47 PM

It will work but it won't be any better than a MaxScope 40 dedicated telescope, which costs about the same. You'll only be using 40mm of effective aperture, rather than the full 125mm.

At the risk of plugging, the options are in a book I wrote, in conjunction with many other writers:


To use the full 125mm aperture, you'd need to consider one of the non-Coronado products outlined in the book.

#3 mal1



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Posted 04 February 2008 - 10:43 PM

I purchased a Coronado PST and also an additional filter to double stack. The resolution at the lower angstrom number is excellent compared with the single stack, however the built in sol ranger finder does not seem to function when double stacked. I wonder if anyone has any comments or suggestions.
Thanks  Don Malatesta

#4 Mark Sibole

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Posted 05 February 2008 - 12:44 PM

Im not sure how the stacking kit goes on but make sure nothing is obstructing the hole on the black base where the light comes in.
I had that problem when I used it on a small set of rings when I piggybacked it on my LX200.


Mark Sibole
MTSO Observatory
Fife Lake, Mi.


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