Meet my fat lady, a 120 mm f/5 solar mod.

Frankenscope? Let's see it!***be advised that NOTHING in this forum has been safety tested and you are reading and using these posts at your own peril. blah, blah, blah... dont mess around with your eyesight when it comes to solar astronomy. Use appropriate filtration at all times...
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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by robert »

Interesting, thanks,
Robert


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by swisswalter »

Hi Theo

that looks like a very fine straight forward mod


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by Allcart »

Thats a really tidy mod, and takes great pics.


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by marktownley »

She's a fine woman! Thanks for the details 8)


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by colinsk »

Nice solutions!

:thumbsup:


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by Allcart »

What 2" extender are you using Neo and how does it attach to the pst.


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by marktownley »

What 2" extender are you using Neo and how does it attach to the pst.

2" TeleVue Powermate

It goes infront of the etalon on the nosepeice.


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by Allcart »

Sorry guys, I'm confused. In the first pic, is the powermate connected to the etalon. The last pic looks like the powermate and extender have been switched round.

Does the nosepeice on the powermate unscrew so that it can slide onto the etalon rear adapter. I still can't see how it connects.


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by Allcart »

Wow Neo, thats excellent, what more can I say.


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Re: Meet my fat lady, a 120 mm f/5 solar mod.

Post by Merlin66 »

Quite an arrangement you have there.....
As you probably already know some of the x2 Balow type PST mods have not always been successful. Unfortunately, unless you remove/ replace (A la Mark T.)the front barlow element from the PST etalon assembly, the "design" answer is to position it at -200mm inside the focus. Anything other is a compromise.....
You can verify the final set-up by measuring the distance from the etalon to the final CCD focus...this must again be 200mm....
Look forward to seeing your results......


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