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  1. #1
    David I.'s Avatar
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    Question Baader Tuning Rings v/s Barlow 2x



    I need some advice on the use of Baader Hyperion fine tuning rings in order to make a decision regarding what focal length Baader Hyperion to purchase. I realize I will lose some light using my Celestron Ultima 2x, but keep in mind I have a 10" Newt. If you haven't read some of the postings on my recent thread of a day ago or so, you may want to regarding my basic magnification choice and why. What would be better and why: Buy a 5mm Baader Hyperion and use my 2x when possible or use a tuning ring or two instead of the 2x? Or buy an 8mm Baader Hyperion and either use my 2x or tuning rings? According to the chart on alpines website....an 8mm EP becomes a 6 or 5 or 4.3mm using the 14mm/28mm/Both Rings respectively. The 5mm EP becomes a 4 or 3.2 or 2.6 respectively. I would have to purchase one or both of the fine tuning rings which wouldn't break the bank, but is it worth the expense and hassle of having to fool with them sometimes? It would be much easier and safer "dust wise" to just use my 2x when possible....which I admit won't be super often....please read my previous thread on magnification. The 8mm without any additions gives me only 150x, the 5mm would give me 240x. But I would have many mag choices using the fine tuning rings. Not sure what to do!!!
    I SOLD MOST OF MY PAST ITEMS AND NOW HAVE: SkyWatcher 8" Collapsible Dob, 10 & 25mm Plossl's, Baader 8mm Eyepiece w/28mm tuning ring, TeleVu BLW-3125 3x Barlow, 13% Moon Filter, Celestron NexImage Burst Color Imager, EQ-Tech Tracking Platform. Eyes to the skies- enjoy and appreciate the multitude of hidden wonders. :
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  2. #2
    Bob327's Avatar
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    I suggest that you borrow a Hyperion eyepiece and a set of tunign rings.... Then walk into your bathroom ..turn off the lights have a seat and in the dark try installing/uninstalling them...

    If you have problems you will also have problems at night in the field when its below zero and the wind is kicking up a little...

    SERIOULSY I do not own any Hyperions (but I do own a pair of Orion Stratus which do not have the tuning rings so I honestly can not say IF I would ever go to the trouble of playing around with the rings while observing... just to easy to grab a barlow and use it..

    Just the opinion of an old guy who is stuck in his ways..that does not like aggravation when I'm relaxing under the stars...The KISS principle applies concerning the tuning rings

    Bob G.
    BTW...the amount of light you loose with a barlow is is essentially negligible to the average persons eyes...


    Clear skies...warm feet....what more can we ask for in the next 5 or so months...

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    CPC1100 housed in a slotted domed observatory (Exploradome) 4 and 5 inch refractors for use from the lawn, a 8" Sct (NS 8i) for star parties...
    I Hate the winter so I use heated Motorcycle clothing to stay warm while observing in winter
    Retired, also have 2 other hobbies
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  4. #3
    David I.'s Avatar
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    Here's a thought I have in case anyone wishes to respond: Instead of getting a Baader Hyperion 5mm, what if I got a Baader Hyp 8mm. Without using anything else this would give me 150x, with my 2x I'd get 300x. Since I feel I often have exceptional viewing conditions (to the best of my knowledge) I could always install the fine tuning ring(s) to get 400x or 480x with the 2x also installed. Or, I could just use the FTR's without the 2x and get 200x, 240x, and both rings get 279x. So basically, with the 8mm my mag choices are: 150,200,300,240,279,400,480,558(useless). With the 5mm my mag choices would be 240,300,,375,461,480,600 & 750(useless). I did these calculations very quickly and I may have missed some, anyway you can see my dilemma. Keep in mind I still have my SW-SP10mm that I don't like very much. Basically I'm having a hard time deciding what focal length Baader Hyperion EP to get for the purpose of close planetary viewing as described in my other threads and posts. Baader also has a 10mm Hyperion now, which adds another option! HELP!
    I SOLD MOST OF MY PAST ITEMS AND NOW HAVE: SkyWatcher 8" Collapsible Dob, 10 & 25mm Plossl's, Baader 8mm Eyepiece w/28mm tuning ring, TeleVu BLW-3125 3x Barlow, 13% Moon Filter, Celestron NexImage Burst Color Imager, EQ-Tech Tracking Platform. Eyes to the skies- enjoy and appreciate the multitude of hidden wonders. :
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  5. #4
    ibase's Avatar
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    Since you already have a 10mm EP, I think the 8mm Hyperion would be the better choice. To give you an idea of how hard/easy it is to install a fine-tuning ring (FTR) in total darkness, I brought out my Hyperion 21mm and the 14mm FTR to install on it, set a timer on, closed my eyes and started unscrewing the bottom barlow element/nosepiece on the Hyperion, replaced it with the 14mm FTR, and screwed back the nosepiece on the FTR thread. Total elapsed time: < 20 seconds. I know that some people don't like messing around with the FTR's in darkness, but there are also those who don't mind doing so, and you might be one of them since you've expressed interest in using one (or two).

    The good thing is that you don't have to purchase the FTR's immediately because you already have a good Ultima 2x barlow to use it with; you can just get the Hyp 8mm initially, plug it in the barlow and see if you like the view. Later on you can get the 14/28 FTR's as needed. The advantage of using the FRT's vs. the barlow has to do with ergonomics - it's cumbersome to use the barlow combo because the Hyperions are big EP's and sticking it on the barlow can be unwieldy whereas the Hyp with the FTR's has a shorter and more compact profile than with a barlow. Just my 2 cents.

    Best,

    Hernando
    Last edited by ibase; 09-07-2010 at 12:39 AM.

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  7. #5
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    Hi Hernando, thanks for the input. It seems you and I may be thinking somewhat the same on this. As stated, I'm leaning towards the 8mm. I'm actually afraid that the 5mm may be too powerful more often than I may think. The worry or hassle of changing FTR's does not really bother me. If I end up deciding to buy one or both FTR's, I'm sure after some experimentation I will come up with one or two combinations that I will use the most and just leave it set up that way...which could include using no FTR, don't know yet. Besides, as you point out, it really doesn't take that long to remove or add a FTR if I need to....also I don't think I will have to do it frequently. I think the 8mm gives me some nice mag choices that might be more "usable" in the long run than the 5mm. Thanks again Hernando, hope all is well in Manila. Regards, David. P.S. Quite honestly it had crossed my mind regarding using my 2x with a large heavy Hyperion, that's a lot sticking pretty far out the side of the scope...but thanks for mentioning.
    I SOLD MOST OF MY PAST ITEMS AND NOW HAVE: SkyWatcher 8" Collapsible Dob, 10 & 25mm Plossl's, Baader 8mm Eyepiece w/28mm tuning ring, TeleVu BLW-3125 3x Barlow, 13% Moon Filter, Celestron NexImage Burst Color Imager, EQ-Tech Tracking Platform. Eyes to the skies- enjoy and appreciate the multitude of hidden wonders. :
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    ibase's Avatar
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    David, you're most welcome, glad to be of help. Try to let us know how it works out once you've decided on which EP to get and have used it on your scope. Good luck!

    Best,

    Hernando

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    Bob is really NOT THAT OLD! Ha!
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    David I.'s Avatar
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    Thanks again Hernando, I really appreciate all the help. I'm pretty sure I've decided on the 8mm Baader Hyperion EP. With the 8mm v/s the 5mm I will get usable mags of 150,240,300 and 480x either using it alone or with my 2x or with 28mm FTR or various combinations. I will probably order the 28mm FTR right away with the EP. I will let you know how it all turns out later. Regards, David.
    I SOLD MOST OF MY PAST ITEMS AND NOW HAVE: SkyWatcher 8" Collapsible Dob, 10 & 25mm Plossl's, Baader 8mm Eyepiece w/28mm tuning ring, TeleVu BLW-3125 3x Barlow, 13% Moon Filter, Celestron NexImage Burst Color Imager, EQ-Tech Tracking Platform. Eyes to the skies- enjoy and appreciate the multitude of hidden wonders. :
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