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  1. #1
    Downtoearth's Avatar
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    Default Baader Hyperion Question



    Hi there,

    I have this Nexstar 8 SE with a 2" diagonal and a 1.25" collar adapter.

    I also have a Hyperion 8mm (it has a 1.25" end stage) and two 2" Finetuning Rings (14 and 28 mm) that fit on the Hyperion.

    I also have a 2X Televue Barlow (1.25").

    What is best for viewing?

    My straight Hyperion with the Barlow (8mm/2=4mm) or the Hyperion with the 2 Finetuning Rings (= 4.3 mm according to the Baader Planetarium Table). Basically, everything has to be reduced from 2" at the observer end to 1.25 at the visual back end. However, in one case, the magnification is done through a 1.25" tube (Barlow), while in the other case it is done through the extension of a 2" Hyperion tube (Finetuning rings). What is best?

    Thanks for your neuronal time,

    Downtoearth

  2. #2
    Joe Lalumia's Avatar
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    Default

    The other night for over 2 hours I used one eyepiece-- a 32mm -- 2 inch-- to view everything from Alberio, to M13, to M7. "Best for viewing" cannot actually be answered.

    I would use the Hyperion as a 1.25 inch at 8mm-- then unscrew the bottom and it becomes a 2 inch at about 11m?? or so--- the extension rings also change it to----- according to their chart all over the place from 4.3mm --- 8.6mm.

    There is a chart somewhere on the internet that has a list of every Hyperion and what each ring (s) does to it. I am looking at the list ---which I printed off a while back. I think it was on the Baader web site somewhere.
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  4. #3
    Bob327's Avatar
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    Default

    Downtoearth....

    Sorry to tell you this BUT the highest power eyepiece that I even carry in my eyepiece case that I use when viewing with my C8 is a 8l5 mm Pentax XF)

    AND that BABY sure does NOT get a lot of use...not under my skies anyhow

    I honestly can not see any a 8 mm eyepiece used in a C8 with a 2x barlow..unfortunately I have NO EXPERIENCE with a Hyperion (too lazy to do that in the dark a few times a night) so I do not know if they can be removed to increase or decrease magnification...

    Now on a 13 mm Hyperion ..that is a completely different story..heck on great nights you may even be able to use a 2x barlow... the 8 mm however is just too powerful as it stands alone

    BTW..
    I do own and use a 17 mm Orion Stratus that I won as a door prize at a star party..and that eyepiece EARNED its way into my eyepiece case...it just plane works and I believe it is very similar to the Hyperions.....I would say both are truly very good buys when used in a f/10 telescope...

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  6. #4
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    Default

    Hello Downtoearth,

    the Baader 1.25" Hyperions can be viewed as a "sort of Barlow" screwed on a "sort of 2inch EP". I have not been successful even with high-end Barlows added to the Hyperions. You can fine tune the Hyperions by screwing the distance 2inch rings, but again, it is like increasing the distance between a common Barlow and a common EP.

    The Hyperions work at their best as they are.

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  8. #5
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    Default

    I use the Hyperion 8mm as my main high power EP, and do use the fine tuning rings when I want more than the 160x I get with just the 8mm. I don't find the image degrades too much with the fine tuning rings in. They also aren't too hard to do in the dark. I usually just leave the 1 1/4" nosepiece in the focuser, unscrew the EP, screw the fine tuning rings onto the nosepiece and then screw the EP back on. It only takes 20 seconds.

    One thing to watch for is that one of the surfaces seems to be very close to the focal plane. I notice I sometimes get little hairs or dust that's in sharp focus with the EP and I need to clean it.

    http://www.baader-planetarium.com/pd..._visuell_e.pdf
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  10. #6
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    Default Hyperion Finetuning Rings versus Barlows

    [quote=DaveW;1057353695]I use the Hyperion 8mm as my main high power EP, and do use the fine tuning rings when I want more than the 160x I get with just the 8mm. I don't find the image degrades too much with the fine tuning rings in. They also aren't too hard to do in the dark. I usually just leave the 1 1/4" nosepiece in the focuser, unscrew the EP, screw the fine tuning rings onto the nosepiece and then screw the EP back on. It only takes 20 seconds.

    One thing to watch for is that one of the surfaces seems to be very close to the focal plane. I notice I sometimes get little hairs or dust that's in sharp focus with the EP and I need to clean it.

    Thanks a lot for the unscrewing/screwing trick, I'll try it. I'll do some comparisons between adding a 2x Barlow and using the Finetuning Rings on the Hyperions 17 and 8 mm and post back with the results... as soon as clear night skies are in conjunction with my free time.
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  11. #7
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    Default

    Downtoearth,

    I agree with the comments from JG.
    I view through a 4" f7 apo, and an 8" f6 dob, with the 8mm Hyperion. On both scopes, I do not really like the view in the 2" format or the 1.25" with a good barlow. I don't own the 24 ring, therefore, do all my viewing with just the eyepiece, or with the 14 added. That gives me an 8mm and 6mm, both of which are good quality views.

    David

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  13. #8
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    Default

    I'm thinking of buying 1 or maybe 2 Baader Hyperion EPs for my SW 127Mak.
    Is there an ideal for any given scope? There seems to be almost too much choice

 

 

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