CLOUDY NIGHTS FORUM ARCHIVES
"Live Forums" can be found here: Live Forums


Equipment Discussions >> Binoculars

Pages: 1 | 2 | (show all)
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Stellarvue 20x85 vs. Oberwerk 20x90 Binos
      #353601 - 02/23/05 08:03 AM

The Oberwerks are back after collimation tuneup by Kevin at Bigbinoculars.com.

I had the SV 20x85s and Obie 20x90s out last night for a brief time. I looked at the Trapezium and M42, and the Pleadies before it clouded up. Both binos could split 3 of the 4 main Trapezium members with the 4th being elongnated. The SV star images were sharper than the Obies with the Obies appearing sightly bloated and haloed and not as pinpoint. The difference was small, but noticible. The SVs showed more cloudlike detail in M42 than the Obies. On the Pleadies, the SV showed less flairing on brighter stars and were slightly sharper on most stars in the cluster. Dimmer stars appeared to be about the same. Both bino's sharpness goes out to about 60% from center before stars start looking defocused. Throughout my brief 1 hour testing, I had to focus the SVs once and the Obies several times. I will be retesting them again on these DSOs once the moon has moved out of the way. I wasn't able to use the binos side by side. I need to modify my bino chair to a dual mount to get quicker comparisons.

This is the first part of my review and I will be providing more of my experiences with these binos as I get clear weather to work with.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Anonymous
Unregistered




Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #353774 - 02/23/05 11:26 AM

Craig, please refresh my memory. Do the SV binos you have possess triplet objectives and are they stopped down to 85 mm from 90 mm?

Quote:

Obies appearing sightly bloated and haloed and not as pinpoint




What is true even in the middle FOV?


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: ]
      #353791 - 02/23/05 11:49 AM

They are doublets and masked down from 90 to 85mm.

"What is true even in the middle FOV?"

Not sure what you're asking. The SVs didn't have the halo and just the usual twinkling and flairing. This was for the Trapezium stars. Other stars in the field didn't have the halo. Not sure what caused the effect, maybe the close proximity of the star's light to one another coming thru the objectives/EPs.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Anonymous
Unregistered




Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #353796 - 02/23/05 11:54 AM

Craig you had said that....

Quote:

The SV star images were sharper than the Obies with the Obies appearing sightly bloated and haloed and not as pinpoint.




without saying where in the FOV the obies showed this effect. Was in the middle, between the middle and edge, or at the edge of the FOV? I read your statement to mean that you saw this effect all over the FOV, but I just wanted some clarification.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: ]
      #353800 - 02/23/05 11:59 AM

It was in the middle. I didn't check near the edges or in between.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Anonymous
Unregistered




Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #353820 - 02/23/05 12:20 PM

Did you notice this before you sent them to Oberwerks for collimation?

Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: ]
      #353875 - 02/23/05 01:09 PM

I didn't notice whether it was present or not before they were knock out of collimation last Fall. Before that I wasn't paying attention to star image quality, just the overall view they gave. Prior to the SVs arrival, I didn't have anything to compare them to.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Anonymous
Unregistered




Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #353888 - 02/23/05 01:17 PM

Just asking. It seems to me for Oberwerk, that your best views should be stars placed in the middle FOV, meaning pin point objects. So when I read that you had some haloes showing up, I thought that was a little unexpected.

Sounds like your SV are really nice then. I am on the verge (another reason why I am asking these questions) of purchasing a 20x80 to 20x90 type binocular.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: ]
      #353893 - 02/23/05 01:21 PM

I wonder if the off axis light of the moon was showing up. I wasn't using any dew/light shields. The SV objective are recessed about 1/2" into the barrels whereas the Obies are up close to the front.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
btschumy
Vendor - Southern Stars


Reged: 04/13/04
Posts: 1708
Loc: Longmont, CO, USA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #353947 - 02/23/05 02:09 PM

Was there a chance the Obies had dew or frost on them? That can certainly product a halo effect.

--------------------
Bill Tschumy
Southern Stars


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: btschumy]
      #353960 - 02/23/05 02:15 PM

Dew or my breath possibly, but it was only on the trap stars in the middle FOV, but maybe just the middle was fogged up on the EPs. Next chance I get, I'll redo the same observation and see if I get the same or different images.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Edited by Craig Simmons (02/23/05 02:16 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #354168 - 02/23/05 05:18 PM Attachment (268 downloads)

Here's the new double saddle testing fixture.

Attachment

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #354170 - 02/23/05 05:19 PM Attachment (260 downloads)

And a closer look.

Attachment

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
btschumy
Vendor - Southern Stars


Reged: 04/13/04
Posts: 1708
Loc: Longmont, CO, USA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #354194 - 02/23/05 05:38 PM

Craig,

Did people call you "four-eyes" as a kid?

--------------------
Bill Tschumy
Southern Stars


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: btschumy]
      #354229 - 02/23/05 06:06 PM

LOL!

My wife thinks I'm ready for the funny farm.

One of the suprising things was that I didn't need an additional spring to counter balance the extra weight.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Anonymous
Unregistered




Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #354409 - 02/23/05 08:59 PM

So you just move your head from one bino to the other? That's pretty cool. Double action! I can't imagine two. I'm busy enough with one...

Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: ]
      #354803 - 02/24/05 07:56 AM

For comparing two big binos, it's the only way I can review these two. I don't have any tripods and mounts I can setup that will hold binos in this size. There's just barely enough room in the chair to get my eyes over far enough to each set up EPs. Not as comfortable as one, but it works good enough. Now if I can just get rid of this snowstorm.

I was way off in my guess on the SV and Oberwerk recessed objectives. The SVs are about 1 1/4" and the Obies are about 1/2" back. Since I have some neighborhood light polution to deal with, I'll do the rest of the testing with dew shields on both binos to cut down on the off axis light intrusion.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Anonymous
Unregistered




Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #354814 - 02/24/05 08:15 AM

Instead of having your binoculars side-by-side, could you have one on top of the other? You probably already considered this. I was thinking [without having the intimate knowledge of your chair specs] that you could have the binoculars mounted one above the other and both could be lifted up and down as needed and to get out of the chair. Eh, just a thought...

Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: ]
      #354825 - 02/24/05 08:27 AM

I considered that, but I would have to throw the lower bino off target to bring the upper one into position so my eyes could reach it and vise versa.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Rusty
Postmaster


Reged: 08/06/03
Posts: 19246
Loc: Brooker, FL
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #355685 - 02/24/05 10:52 PM

I see the design of a new Bino-Cube - one capable ofmounting 4- 2X x 100mm binocs.

Please send photos of your progress!

--------------------
N11GPS Fastar//TOA-130S//MK66 Std//AT6RC//Vintage C5//Megrez II 80mm APO//SolarMax 40
NJP Temma II//Sirius EQ-G
Too Many Astro-Cameras//Mallincam Color Hyper Plus
Two not-spoiled Golden Retrievers - Casey and Nelson

Lot 19 Deerlick Astronomy Village (Canis Major)


Sometimes I think we're alone in the universe, and sometimes I think we're not. In either case the idea is quite staggering. - Arthur C. Clarke


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Rusty]
      #355948 - 02/25/05 08:30 AM

Send me 4 100mm binos and I will build it. And the madness continues....

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Anonymous
Unregistered




Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #356011 - 02/25/05 10:22 AM

At that point you should make a two seater! Rather than a "bino chair" or "cube"...build a "bino couch"!

Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: ]
      #356032 - 02/25/05 10:41 AM

That would be one way to share the view in a bino chair or should I say bino love seat. I can just see two people deciding over what to look at.

Observer #1: Pleadies! (turns chair quickly)

Observer #2: No! Double Cluster! (counter spins chair even faster)

Observer #1: I said Pleadies! (spins chair rapidly, wheel bearings starting to smoke)

Observer #2: Double Cluster or Nothing! (spins chair violently, sparks erupt from wheels, small fire erupts on groundboard)

Observers #1 & #2: %@#*!^&! (flailing binos straps frantically at each other)

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Craig Simmons
Carpal Tunnel


Reged: 12/10/03
Posts: 1502
Loc: Falls Church, VA
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #356917 - 02/26/05 07:16 AM

Back to my review. Last night I tried out the new double saddle mount. Earlier I had made some changes to it to move the binos closer together. Even with the that it was awkward to get my eyes to the EPs. Anyway, I looked at M41 in Canes Major and M35 in Gemini. Both clusters were contained in the middle FOV. No dewshields were used. I still need to make some for the Obies. In both binos, the cluster's members were about the same and stood out equally against the sky background with the SVs again being a little sharper and more pinpoint. Averted vision stars in the clusters were easier to see in the SVs than in the Obies. Contrast in the binos was the same. I couldn't find any difference in sky background color after repeated comparisons. I finished my session with a look at Saturn. Both binos showed separation between the rings and planet. The SVs showed less flairing and was sharper than the Obies with the ring/planet separation was easier to detect in the SVs.

--------------------
Craig Simmons
Oberwerk 8x56, 20x90
Nikon Action IV 10x50
Barska 15x70
Galileo 20x60
Stellarvue 15x63, 20x85
Orion XT10 pre-Classic
Antares 10
Stellarvue AT1010


Post Extras: Print Post   Remind Me!   Notify Moderator  
Glassthrower
Vendor - Galactic Stone & Ironworks


Reged: 04/07/05
Posts: 17931
Loc: Oort Cloud 9
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Craig Simmons]
      #976416 - 05/29/06 11:35 AM

Craig -

Do you have any further observations or impressions to share about the SV 20x85, now that you have used them for a long time? I am especially interested in FOV sharpness and size. What size is the FOV again?

MIkeG

--------------------
Michael Gilmer - Member of the Meteoritical Society & Collector of Falling Stars.



☄ ⒼⒶⓁⒶⒸⓉⒾⒸ ⓈⓉⓄⓃⒺ ☞ www.galactic-stone.com


Post Extras: Print Post   Remind Me!   Notify Moderator  
KennyJ
The British Flash


Reged: 04/27/03
Posts: 20139
Loc: Lancashire UK
Re: Stellarvue 20x85 vs. Oberwerk 20x90 Binos new [Re: Glassthrower]
      #976665 - 05/29/06 02:49 PM

Mike ,

The STATED TFOV of the Stellarvue 20 x 85 is 3.2 degrees .

Note that following some confusion a while back about the TFOV of the Steiner 25 x 80 , the ACTUAL TFOV turned out to be 2.3 degrees , as opposed to an initially stated 3.1 .

I think it's pretty much established now that anything much wider than a 60 degree AFOV in REASONABLE quality FIXED MAGNIFICATION GIANT BINOCULARS ( 80mm and above ) is going to be either very rare , to some extent either wasted or over - claimed or prohibitively expensive .

Kenny

--------------------


Milton Wilcox R.I.P






Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | (show all)


Extra information
0 registered and 25 anonymous users are browsing this forum.

Moderator:  EdZ 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 2189

Jump to

CN Forums Home



Cloudy Nights Sponsor: Astronomics