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Thread: Hyperion question.

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    Question Hyperion question.



    I've seen a lot of talk about hyperions on the forum lately. I understand you can remove the 1.25 and use as a 2" . In doing that use decrease the size e.g. 21mm to 32mm. What I'm wondering is can put the whole ep( with the 1.25 piece) into a two inch focuser(maintaing the 21mm) or is the barrel too long. I know you can just put a 1.25 adapter into the 2" focuser, and use it that way. I was just wondering if it would be more stable without the adapter. I'm curious because these ep's look large. Thanks, Derek.
    name: Derek

    Various scopes and such.

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    Hi derek ... I dont know about the focal length changing but i think it is just a 2in. adapter that slips over the 1.25in. nosepiece of the eyepiece ...
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    dmbryan-

    You can put the whole EP with the 1.25" barrel into a 2" diagonal. That is how I use mine. That is the great thing about the Baader's.
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    Thanks ya'll. The seem like a cool ep. With the tuning rings you get a four for one ep. Are the tuning rings a pain to change?
    name: Derek

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    I dont know about changing the rings but you would think once you got them dialed in for your scope , you would not have to mess with them ...Unless you use them on a different scope ? I guess ...
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    I just took a few pics of one of my Hyperions - in various configurations.

    For anyone interested in these EPs, these pics should give an idea of how they work, and what can be done with them.....

    First up - Here's my 13mm Hyperion - That's a finetuning ring to the left of it - and the nosepiece cap to the right of it




    Here it is with the nosepiece removed - it simply unscrews.
    You can see inside the main body, it looks like the paint is wet - it is in fact slightly tacky - Baader call this 'Glue-Paint' - The idea is that any dust which gets inside when you open it up, gets stuck on that, instead of ending up on the inside of the lenses.




    Now a pic with the finetuning ring screwed in place between the main body and the nosepiece.



    That's the 28mm finetunig ring - I also have a 14mm finetuning ring.
    As well as the 13mm 'prime' function - it becomes a 9.2mm with the bigger ring in place - A 10.8mm with the smaller ring in place - An 8.1mm with both finetuing rings in place - Or I can use the main body, minus the nosepiece as a 23mm 2"

    You can also add 2" filters into the mix - between main body and nosepiece.
    If you use a filter in that position, it shortens the eyepieces focal length by a little over 1mm


    Here is my Diagonal from my SCT - It's a 2" model, but also has a 'step-down' adapter for 1,25" eyepieces.




    And here's the 13mm Hyperion inserted into the 1.25" adapter (I've left it sticking out a few mm to show how it fits - in normal use it sits in there properly)




    Here is the Hyperion sitting in the 2" receptor (1.25" adapter removed - that's it on the left)




    Witha 1.25" filter on the end of the nosepiece, the end of the eyepiece stops only about 4mm or 5 mm short of the mirror in my diagonal. If you are using filters in a diagonal, be careful the end doesn't hit your mirror.
    I'd also advise, if you want to use finetuning rings, in the 2" receptor of a diagonal - get a 2" Stop' ring to ensure it doesn't sink too far in and stub up against the mirror.


    I have a leaflet somewhere, with the various focal lengths and configurations listed for each of the modular Hyperions.
    It's very late here right now and I'm off to bed, but I'll scan the leaflet tomorrow, and post up an image of the relevant bit.
    Last edited by Carlos_dfc; 09-20-2009 at 04:12 AM.
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    Default Not at all

    It is like putting on filters.

    Quote Originally Posted by dmbryan View Post
    Thanks ya'll. The seem like a cool ep. With the tuning rings you get a four for one ep. Are the tuning rings a pain to change?
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    As promised - I've finally got round to scanning the chart that came in the packaging with one of my Hyperions....

    It was a bit big to post the full page up here - so I've crooped the main points as seperate images.


    Here's an exploded diagram of a Hyperion. complete with finetuning rings, and a 2" 'Stop-Ring'




    This shows how you can use a 2" filter while still using the 1.25" nosepiece
    (Using a filter like this knocks just a little bit off the focal length of the eyepiece - see chart at the bottom of this post)





    This shows how the 2" Stop-Ring prevents the nosepiece from hitting the mirror in a diagonal.




    And here is the chart showing the focal lengths you get by using each eyepiece in the various configurations possible.



    Can you spot the spelling mistake?
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    That is very cool, Carlos! Thanks for all of the pics and the explanations.

    Eric
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    Ditto on what Eric said. A pictorial has no substitution!
    Name: Mike. Just hanging out here in God's country just watching the stars!
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