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Thread: Baader Zoom review after several uses not so satisfied.

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    Thumbs down Baader Zoom review after several uses not so satisfied.



    So I have had the opportunity to use my new Baader Zoom several nights now and I have formed some opinions based on my use.

    First it is big and heavy compared to all my other eyepieces so I need to figure out an optimum balance point for the scope if I want use my standard plossl eye pieces.

    The view thru the eyepiece when compared to my Celestron plossl's at the same magnification seems to be little to no difference.

    The convenience of zooming is not as good as I expected as the Baader to maintain a focal length which is does not do. For small changes in zoom you have to constantly refocus. This is not a big deal, but, had I know this was the case I would not have purchased this item I would have instead purchased one of the lower priced units.

    So bottom line is had I know about the loss of focus during zooming I might have made a different decision on the purchase. Other reviews mentioned going to double stars and could zoom in and see them come apart so there was an expectation that this zoom would have worked like any high quality camera zoom I have ever used where the focus did not change while zooming in.

    So I want to point this out in my review so others know what to expect.

    Also I am curious of others experience the same issue with their eyepieces as maybe I have a defective unit.

    Rating is down.
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    Don

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    Default Re: Baader Zoom review after several uses not so satisfied.

    For the balance thing, try a welding magnet. You can stick it on when the heavy eyepiece is in place, then remove it when it is not

    https://www.amazon.com/Magnetic-Weld...g+magnet&psc=1
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    Default Re: Baader Zoom review after several uses not so satisfied.

    The magnet is a great idea, thanks for sharing.
    Celestron 8SE scope, Ham radio enthusiast, Camping and Jeeps. All hobbies that Just Empty Every Pocket
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    Don

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    Default Re: Baader Zoom review after several uses not so satisfied.

    I like them. I didn't expect them to be parfocal while zooming so I was not disappointed. What positively impressed me most about them is that the image quality is superior to other zoom eyepieces. I have the Vixen LV and have had the Celestron zoom also. To my eyes the Baader is the best, almost as good as a fixed focal length eyepiece. The Vixen is just a tad behind and the Celestron follows after. I'm keeping the Baader Mark IV and Vixen. I've sold off the Celestron.

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    Default Re: Baader Zoom review after several uses not so satisfied.

    Quote Originally Posted by not_Fritz_Argelander View Post
    I like them. I didn't expect them to be parfocal while zooming so I was not disappointed. What positively impressed me most about them is that the image quality is superior to other zoom eyepieces. I have the Vixen LV and have had the Celestron zoom also. To my eyes the Baader is the best, almost as good as a fixed focal length eyepiece. The Vixen is just a tad behind and the Celestron follows after. I'm keeping the Baader Mark IV and Vixen. I've sold off the Celestron.
    Thanks for sharing that bit, I've been contemplating that purchase for a couple months now.
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    Default Re: Baader Zoom review after several uses not so satisfied.

    Quote Originally Posted by frazmataz View Post
    Thanks for sharing that bit, I've been contemplating that purchase for a couple months now.
    I think that JG may have some interesting recommendations for zooms, perhaps. But among the zooms I've used the Baader Mark IV is clearly the best of the bunch. One should not expect astronomical zoom eyepieces to remain in focus throughout their range for the relatively low cost.

    Anyway I have no hesitation in recommending the Baader Mark IV in refractors and Maksutovs. I've tested them in my SV ED80A, VMC110L, and Intes MK66. I'm hoping to be able to test in a newtonian, my Z12 tomorrow.
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    Default Re: Baader Zoom review after several uses not so satisfied.

    Thanks for the review Don. Sorry to hear it is not maintaining focus though. Bill Paolini's review (https://astronomyconnect.com/forums/...inoviewing.66/ ) indicates that it does. Is there possibly a problem with yours?

    I have had the Williams 7.5-22.5 zoom for quite a few years, and oddly it holds focus from high power to low power, but not the other way round.

    ... and not_Fritz: I think I know what JG will say: it is the Leica 25-50W or nothing!

    All the best,

    Dean

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    Default Re: Baader Zoom review after several uses not so satisfied.

    Quote Originally Posted by DeanD View Post
    Thanks for the review Don. Sorry to hear it is not maintaining focus though. Bill Paolini's review (https://astronomyconnect.com/forums/...inoviewing.66/ ) indicates that it does. Is there possibly a problem with yours?
    Well if there is a problem with his there is a problem with mine. I've looked through the link you provided and I cannot find a place where Paolini claims par focal zooming. I used a search function on "focus" and got only 6 hits in the article. The focus adjustment is smallish but not zero.

    I have had the Williams 7.5-22.5 zoom for quite a few years, and oddly it holds focus from high power to low power, but not the other way round.
    That's weird.....

    ... and not_Fritz: I think I know what JG will say: it is the Leica 25-50W or nothing!
    Yep! Now I need to get back outside. There is actually observing being done and I'm using the Baader Mk IV, the Panoptic 24mm, the KK 25 and 12mm. I just ducked in due to a small mammal creeping up.... beady little eyes in my red flashlight. So grabbed some almonds and iced tea.
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    Default Re: Baader Zoom review after several uses not so satisfied.

    Quote Originally Posted by not_Fritz_Argelander View Post
    Well if there is a problem with his there is a problem with mine. I've looked through the link you provided and I cannot find a place where Paolini claims par focal zooming. I used a search function on "focus" and got only 6 hits in the article. The focus adjustment is smallish but not zero.

    That's weird.....

    Yep! Now I need to get back outside. There is actually observing being done and I'm using the Baader Mk IV, the Panoptic 24mm, the KK 25 and 12mm. I just ducked in due to a small mammal creeping up.... beady little eyes in my red flashlight. So grabbed some almonds and iced tea.
    At one point Paolini says "For close doubles or those with components of unequal brightness like Rigel, it was fun finding the star at the lowest magnification, then slowly zooming in until the star split and the companion became visible." I assumed this meant it stayed in focus, but maybe not.

    ... and I hope the small beady-eyed mammal likes the almonds, but it probably won't enjoy the iced tea.

    Happy observing!

    - Dean

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    Default Re: Baader Zoom review after several uses not so satisfied.

    PS: there is an interesting review of the Baader Mk IV on the Oberwerk site: https://oberwerk.com/review-baader-h...oom-eyepieces/ where they confirm the need to refocus as you change the magnification.

    So, like Don I was under a misapprehension, and this is certainly something to be aware of.

    If you want a high power zoom that stays in focus, the TV 3-6mm works really well and you can zoom in on those double stars without worrying about going out of focus.
    - and of course JG's Leica 25-50x stays in focus too: but both the TV and the Leica are at a higher price point than the Baader's...

    - Dean
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