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Equipment Discussions >> Binoculars

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zanti-misfit
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Reged: 08/17/09
Posts: 88
Loc: SE United States
Re: Oberwerk 9x60mm or 11x56mm decision.. new [Re: pinkkid]
      #3349804 - 09/22/09 06:58 PM

That is a very kind offer pinkkid, thank you for that. I'll keep that in mind as my quest for some cool binoculars continues.

I've looked at the Garrett line. Isn't their stuff the same as the Oberwerks? Like made in the same place just sold under a different brand name? I thought I read that somewhere, but I could very easily be wrong. But if they do originate from the same source wouldn't they also suffer from the aperture loss that Edz found with the Oberwerks?

Course these Barskas I've been looking at, while not their bottom of the barrel line, could also be less than advertised.

Edz, please continue your good work. Test as many as you can because that info is so helpful for us out here trying to get what we pay for. Because of your findings I said no way to the Oberwerks. I'm glad I found out first because I would have been very irritated indeed if I had bought them and then found out afterwards...


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zanti-misfit
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Reged: 08/17/09
Posts: 88
Loc: SE United States
Re: Oberwerk 9x60mm or 11x56mm decision.. new [Re: pinkkid]
      #3349820 - 09/22/09 07:04 PM

And about your pupil size, very cool that you have 7mm capability. I don't know what mine are. I'm 38 and my eyes are still hanging in there, no glasses needed yet. Next time my wife has an eye exam I think I'll try to squeeze in a pupil rating.

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Scott BeithAdministrator
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Re: Oberwerk 9x60mm or 11x56mm decision.. new [Re: zanti-misfit]
      #3351021 - 09/23/09 08:43 AM

My impressions of the 11X56 Obies are listed in the mini bino reviews link Ed stickied in this forum. I still feel the same way about them to this day. I have been happy with them so far.

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SLAP Observer (TMB130SS, SV102V, SV80ED)
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zanti-misfit
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Reged: 08/17/09
Posts: 88
Loc: SE United States
Re: Oberwerk 9x60mm or 11x56mm decision.. new [Re: pinkkid]
      #3362218 - 09/28/09 05:43 PM

I hated to return the Barska 15x60 Cosmos, but it didn't work out for me. As jaybird pointed out these were the ones reviewed on Holger Merlitz. I was pleased with that. His review nails it very well indeed. Can't add much to his technical review. They are very well made binocs, but bulky as mentioned.

94bamf your observation about the difficulties focusing the individual eps is a truth. While holding these binocs with both hands was ok for brief periods (not too shaky) trying to hold it with one hand while trying to focus in was too much. Don't even bother trying it at night unless there is a tripod available.

The weight of the binocs weren't too bad on the arms as much as the irritation on the bridge of the nose and eye area. Having that part of your face being subjected to that weight, along with the rubbing on the ep from focus was too much. It helped a little to fold down the eyeguards, but still got irritating when viewing at the sky, a good chunk of that weight on your face..

As for the views themselves...well these were the most powerful binocs I had ever tried, and putting them side by side with 8x40s and 10x50s certainly showed the difference. But handling these weren't worth the extra boost. They do show the night sky very well, and if I didn't already own a Dob I'd have proabably kept them and got a tripod. I could make out DSOs very easily and the starfield was VERY bright indeed. I liked what I saw.

But since I don't have to have the big glass to view up close they aren't worth the effort for me. I was hoping they would be a little easier to deal with, but I knew I was taking a shot. As for something to grab and go with on cloudy nights they were a tad too ovewhelming. But I did like them. They felt good, quality was there, I might buy another pair down the line when I'm ready to invest in a tripod. Like I said I really hated to part with them, but I knew they weren't fitting the bill at this time for my needs.

I must also say that my pair never seemed to want to get to a point where I felt they were in perfect focus. I could get close, but it always seemed a tad off. Maybe its just the Gemini in me but I just couldn't get settled. It might have been slightly out of collimation from my testing, but since I was still trying them out and starting to lean towards returning them... I didn't dare try to open it up to adjust them.

Having had some good experiences with my mom's Alpen 8x40 I decided to go with that size, exchanged for a pair of Pentax 8x40 WPII. I liked the idea that you can lock the focus wheel so I can look up without worrying about knocking it out of focus as I view the skies.

I'll update a little bit on my experience with that soon.


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GlennLeDrew
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Re: Oberwerk 9x60mm or 11x56mm decision.. [Re: zanti-misfit]
      #3362405 - 09/28/09 07:36 PM

If focus seemed to never get to where you felt it should, it's possible that the 15X was revealing the inherent spherical aberration of the short focal length 60mm objectives.

In future, try to very carefully compare inside- and outside-focus blur circles of a bright star. With the most commonly found form of spherical undercorrection, inside of focus the blur will have a sharper edge, and outside of focus the blur will have a softer edge. If spherical correction is really bad, at so-called best focus the star will be imaged as a blob and not a point, and will be surrounded by some de-focused 'fuzz.' If you then re-focus until the star is seen as point-like, the blurred halo will become even more prominent (hence the middle-of-the-road 'best' focus resulting in a small blob, which does put the most light into an image 'point.')

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Home-made 11X50 right angle bino, 8.1 deg. FOV
Modified 26X100 bino, 3.5 deg. FOV
Home-made Mk II RA bino, using interchangeable objectives and eyepieces

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