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Equipment Discussions >> Binoculars

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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Pulled the Trigger on Oberwerk BT-70-45 Binoculars
      #6148331 - 10/20/13 12:24 PM

This fall I found myself using my 15x70 binoculars more and more and really loved the 2 eyed viewing experience, the ease of use and mostly the ability of taking in the big picture (which is how I started this hobby over a year and a half ago before I got a slight touch aperture fever ). My problem however is that I get pretty bad neck strain above 45 degree viewing. I’m fine up to 40degrees or so but above 45 it’s really bothersome. So when my lovely wife offered me some astro equipment for my upcoming 50th Birthday, I immediately jumped on the BT70. I think I’m going to love these binos, especially at the cottage where I get Mag 6.5 skies. And the fact that I can increase magnification is just icing on the cake . Now, they are back ordered but I should have them by December at the latest (in time for my birthday ).


I think these will also complement my 127Mak when I choose to use them in tandem. The BT-70 are good to a magnification of 47X and the Mak cannot really go below 48X. Also, the Binoculars will be a great grab and go instrument on cold winter nights when I don’t want to be out for too long.

Eric


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6148374 - 10/20/13 12:51 PM

+1...!!!!!!!!!!!

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daniel_h
Carpal Tunnel
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Reged: 03/08/08

Loc: VIC, Australia
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6148733 - 10/20/13 05:18 PM

70mm is a sweet spot in binos imo, almost a goldilocks

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GlennLeDrew
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Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: daniel_h]
      #6148820 - 10/20/13 06:09 PM

Is this the newer MkII, which uses 1.25" eyepieces and utilizes the full aperture? (As opposed to the first iteration which employed proprietary eyepieces and worked at 60mm aperture?)

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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: GlennLeDrew]
      #6148855 - 10/20/13 06:27 PM

http://www.bigbinoculars.com/70bt45.htm

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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: GlennLeDrew]
      #6148876 - 10/20/13 06:37 PM

This one does use 1.25" eyepieces and from what I have read it has the full 70mm aperture.

Eric

p.s. Happy Birthday


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: daniel_h]
      #6148888 - 10/20/13 06:46 PM

I have to agree about the sweet spot. I am amazed with what I can see with my current 15x70, and they are not even working at full aperture. From what I understand these bt70's would be equivalent to an 80mm apo for both contrast and light gathering, which will be great under dark skies.

Eric


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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6148930 - 10/20/13 07:11 PM

There's nothing APO about them, so why do you say that?

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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6148948 - 10/20/13 07:21 PM

Well first of all they are a triplet and from reading previous post from EDz, a 70mm binocular is roughly equivalent to an 84mm scope (for light gathering and contrast but not for resolution). Now, I'm not buying these because I think they are an APO, I'm buying these because I prefer two eyed viewing and I love the wide field views that I will get. I was considering an 80ed at one point but I did not want to compete with my Mak at the high magnification end and I prefer two eyes at the lower end.

Eric


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6148997 - 10/20/13 07:44 PM

Understood - Please understand that I am happy for you, and would love to have a pair for myself, but the fact that they are a triplet really doesn't count towards improved performance. They are still just an Achro.

-Chuck


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6149008 - 10/20/13 07:49 PM

You may be right Chuck, but since I'm buying these for low power views it doesn't really matter. I guess that when I hear the word triplet I automatically think APO

Eric


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Jarrod
Pooh-Bah
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Reged: 01/20/13

Loc: SE USA
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149024 - 10/20/13 07:58 PM

Yes, it's a triplet, but it's an f/5 made of relatively inexpensive high-refractive-index glass. So while they are well-corrected for what they are, you aren't going to achieve true apo performance. The 20x80 deluxe III triplet is good, but does show a thin blue (or is it green?) line around the full moon. But the design produces good contrast. If the 70 triplet is like the 80, I think you'll be pleased.

Edited by Jarrod (10/20/13 08:06 PM)


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Jarrod]
      #6149031 - 10/20/13 08:05 PM

Thank you Jarrod, I was not aware of the type of glass. I never found the moon to be an issue when I had my 4"f5 achro, but Jupiter was another story altogether. Anyway, I have other instruments for those objects. I really like my 15X70 Skymasters and I think that these will be even better.

Eric


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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149043 - 10/20/13 08:14 PM

I think you will Love them, Eric... Now start putting your coins aside for $Pairs$ of eyepieces:-)

It's great fun!
-Chuck


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Rich V.
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Loc: Lake Tahoe area, Nevada, USA
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: GlennLeDrew]
      #6149048 - 10/20/13 08:20 PM

Quote:

Is this the newer MkII, which uses 1.25" eyepieces and utilizes the full aperture? (As opposed to the first iteration which employed proprietary eyepieces and worked at 60mm aperture?)




Glenn, I think you're thinking of the 90° Garrett MKII; I believe Mr. Bill determined that these Obie 45° BTs were only 60mm effective. There is no MKII 45°.

Rich


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6149058 - 10/20/13 08:37 PM

Yes, my wife said that I get the binoculars for my birthday... but everything else is up to me

I'm really looking forward to them, thanks for the input.

Eric


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GlennLeDrew
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Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149252 - 10/21/13 02:41 AM

Rich,
Oops; I was indeed thinking of the 90 degree version! I must read thread titles more carefully. I wonder if the objective is different between the two?

Eric,
I have on hand for examination--and overdue for return--the 90 degree version of the Mk II 70mm BT. It has achromat-like chromatic aberration; it's certainly not APO-like.

I assume the prism rear aperture will be fairly similar. If so, a 19mm Panoptic is a wonderful eyepiece for it. Even a 24mm Pan is quite useable, albeit with a *very* small and not too objectionable edge darkening, which delivers the widest true field possible at a nice AFoV and with excellent correction across the great bulk of the field. I've tried both these eyepieces, as well as some of a friend's Naglers.


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: GlennLeDrew]
      #6149369 - 10/21/13 07:50 AM

I guess I am still learning about scope and binocular design But that all part of the fun!

Thanks for the info Glen. I'm really looking forward to getting these. Let me know if you are interested in taking a look at them when they come in.

Eric


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149526 - 10/21/13 09:49 AM

Eric,
Unless my eyeballs are failing me again, these are 60mm (effective), and you are still getting them?

-Chuck


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6149555 - 10/21/13 10:08 AM

I'm going to have to look into this further. I had read that they were at full aperture. Thanks for the heads up.

Eric


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149564 - 10/21/13 10:13 AM

Yes,

Please check this out and let us all know.

If memory can be trusted, the 70mm-90° from Garrett are actually 70mm?


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planetmalc
sage


Reged: 10/21/09

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: GlennLeDrew]
      #6149570 - 10/21/13 10:16 AM

Quote:

Eric,
I have on hand for examination--and overdue for return--the 90 degree version of the Mk II 70mm BT. I assume the prism rear aperture will be fairly similar. If so, a 19mm Panoptic is a wonderful eyepiece for it. Even a 24mm Pan is quite useable, albeit with a *very* small and not too objectionable edge darkening, which delivers the widest true field possible at a nice AFoV and with excellent correction across the great bulk of the field. I've tried both these eyepieces, as well as some of a friend's Naglers.




In the accessories list contained within Chuck's link, they're suggesting that their own 27mm 70degree AFOV eyepiece can be used at 14x. Seems unlikely to me, without vignetting (but who knows?).

What a shame that this instrument (like several others) has been designed to ride in a fork mount, but there IS no fork mount on offer.

Edited by planetmalc (10/21/13 10:19 AM)


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6149573 - 10/21/13 10:17 AM

BTW chuck, where did you get the 60mm figure from?

Eric


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Jon Isaacs
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Reged: 06/16/04

Loc: San Diego and Boulevard, CA
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149656 - 10/21/13 11:06 AM

Congratulations on your new Binos.. 70mm with angled 1.25 inch eyepieces... That's pretty darn nice.

It's my understanding that doublet-triplet doesn't really matter when it comes to achromats.. the correction is still the same 1 part in 2000.. but this is not a high power planetary double star instrument and it ought to be mighty sweet and any sort of reasonable magnification.

Jon


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149661 - 10/21/13 11:12 AM

Hi Eric,

It's in the link that Rich V. posted above:

http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5890567/page...

You have to read down apx 45% of the thread, and you will see Bill saying: "Well, on the positive side, build quality and coatings are first rate.

Unfortunately, they failed the effective aperture test....measured around 60mm.

Measured Fuji 16x70s and got 70mm.

Returning for refund"

There is an even longer thread about the Garretts somewhere on CN...

-Chuck


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6149795 - 10/21/13 12:24 PM

Thanks for the Link Chuck

I have to admit that I’m a bit disillusioned right now. A 36% decrease in light gathering is significant. I remember how I felt after getting my 127Mak and finding that is was only in fact a 118mm scope with a now larger CO!

Hmmm…. I’m going to have to think this one over. I love the idea of the 45 degree binocular and I like the reported quality of build…I just don’t like getting less aperture than what I paid for. I could also look at the 90 degree Garrett, but now I would be trading increase in aperture for perhaps a decrease in performance since they seem to have correction issues.

Eric


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Stacy
Star Partyer
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Reged: 09/15/02

Loc: Seattle, WA
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149858 - 10/21/13 01:02 PM

I was looking at those as well, and almost pulled the trigger on a used pair on A-Mart, but hesitated because of the 60mm effective aperture. A 45 degree 60mm achro? Sounds interesting but not something I'd pay $800 for. Too many wonderful 70mm standard bins around to pay such a premium for the 45.

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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6149863 - 10/21/13 01:04 PM

Eric,

Just a thought but just perhaps the 60mm issue has been addressed in the new shipment - I sorta doubt it, as Mr. Bill said what he said, only in June of this year...Not enough time?

Perhaps you should call Kevin and inquire? (866-623-7937)

Look for a PM from me (shortly)...
-Chuck


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Jon Isaacs]
      #6150069 - 10/21/13 03:33 PM

Thanks Jon

I really love using my binoculas but my neck is not so thrilled. I think angled will be the perfect solution, especially since I use binoculars as my grab and go instruments.

Eric


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GlennLeDrew
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6152184 - 10/22/13 06:30 PM

One thing I like about a 90 degree configuration is that it's unnecessary to lock down the eyepieces, as they will not slide out when pointing up to the zenith--or even several degrees beyond. In my own home-made job, or a friend's 70, 88 and 100mm 90 degree BTs, I never lock down the eyepieces. This obviates the teeth-gritting, annoying 'safety cut' on some eyepiece barrels, and in all cases facilitates quick changing of eyepieces. Moreover, it's generally easy and quick to tweak any miscollimation just by jiggling one or both eyepieces until a different/better seating is obtained.

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KennyJ
The British Flash
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Reged: 04/27/03

Loc: Lancashire UK
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: GlennLeDrew]
      #6152222 - 10/22/13 06:44 PM

< One thing I like about a 90 degree configuration is that it's unnecessary to lock diwn the eyepieces>

Glenn,

With an horizontally inclined assembly, the expression to lock DOWN would indeed be inappropriate.

I thus welcome to my admittedly limited vocabulary the word "diwn", which appears could be of Celtic origin.

Am I right, Rick? :-)

Lord Dimbleby


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: KennyJ]
      #6152259 - 10/22/13 07:03 PM

A true Typo, that came by the honest way as the keys are adjacent.

Most of what are referred to as Typos, are in fact messpealings.

Don't let Kenny mess with ya Glenn:-)

-Chuck


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GlennLeDrew
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Reged: 06/18/08

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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6152307 - 10/22/13 07:23 PM

I'm well familiar with ol' Kenny's impish nature! I'm surprised my iPhone's auto-correct feature didn't catch that one; I'm perennially getting the 'i' and 'o' characters swapping places on me--to the point that it would almost be worthwhile customizing my on-screen keyboard, could it be done.

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Rich56
member


Reged: 06/02/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6152396 - 10/22/13 08:15 PM

I was considering these binos too.

I wonder how they would perform with some of the higher power 1 1/4" Naglers?

Maybe u can convince your wife to buy u a pair for your upcoming Birthday Eric...even if it's months away.

Rich


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Rich56]
      #6152438 - 10/22/13 08:42 PM

Ah yes, she quickly figured out this astronomy game. She's only paying for the binoculars, I have to cover the rest

But here's the rough part. If they arrive early, I have to put them away until December!


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Rich56
member


Reged: 06/02/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6186341 - 11/10/13 11:08 AM

Hey Eric,

Am curious if you've gotten your binos in yet? or did you decide to send them back?

Did you tear into them yet...or show self restraint and are waiting till 12/25?

Inquiring minds want to know!

Rich


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Rich56]
      #6186635 - 11/10/13 01:29 PM

Hi Rich

They are still back ordered and I should be getting them in early December. I'm still going ahead with them. After weighing the pros and cons for my situation, I feel that they still fit the bill perfectly. Kevin and Lauren at Big binoculars have been great at answering my questions. I really can't wait to get them.

Eric


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aa6ww
scholastic sledgehammer
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Reged: 10/23/11

Loc: Sacramento, Calif.
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6187615 - 11/10/13 09:45 PM

Eric, don't worry about the clear aperture. Ive looked through a pair of these on tripods with my pair of 24mm Panoptics and 13mm Naglers and they are breath taking. I have the APM 100mm 45 deg models and they are also impressive but the 70mm size is in my opinion the sweet size for giving you excellent wide field 4+ degs field of view with perfect pinpoint stars.
I recently picked up a pair of Oberwerks 15x70 Ultras and they are beautiful also, and are my favorite binoculars to use, even though I have many other pairs.
Don't let the technical data spoil your gift. They are beautiful binoculars and you wont have a single regret, the second you put your eyes in them. I will promise you that.
A friend of mine last night told me he just ordered a pair of 15x70 Ultras like mine, because we feel like we are holding a pair of TV-85's up to our eyes, so the 45 degs pair with the interchangeable eyepieces has go to be the perfect balance of wide field views with excellent optics.

Good luck on your new purchase. I'm going to get a pair also because I "have" looked through a pair of these for an entire night with my 24 Panoptics and my 13mm Nagers in them and they are excellent!!

Good luck and enjoy!!!

...Ralph

Quote:

I'm going to have to look into this further. I had read that they were at full aperture. Thanks for the heads up.

Eric




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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: aa6ww]
      #6187727 - 11/10/13 10:44 PM

Thanks for the words of encouragement Ralph. The way I see it, I really love the views in my 15X70 Skymaster’s and they only have 63mm of clear aperture; so I know for a fact that I will love the views in the BT70’s.

I considered changing my order to the Garrett 70mm 90 degree binocular but in the end we are only talking about 5 mm difference (63mm for the Oberwerk and 68mm for the Garrett). Also, the Oberwerk has a 4 degree FOV and 4.4mm exit pupil at 16X compared to the 2.8 degrees FO of the Garrett and 3.9mm EP at 18X. Also the 45 degree angle will be better for daytime viewing (I used my 15X70 last summer to do some whale watching along the St. Lawrence River and they were excellent. I just wished I had a bit more magnification).

So yes, I’m very eager to get them and try them out. I have very dark skies at our family cottage and I know that they will shine there this winter.

Eric


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6187848 - 11/11/13 12:19 AM

Hi Eric,

First off - I'm sure you will love them.

Now - The figures need to be corrected for the reduced aperture of 63mm.

You cannot have a 4.4mm EP with a 16x63mm. Aperture/Mag will give you the EP. - I'll let you do the math:-)

Thanks,

-Chuck


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6187866 - 11/11/13 12:45 AM

Yes, I agree, the 4.4 is from the technical specs. I get roughly 4, which is fine by me.

I knew I was going to hear from you chuck After writing my post I thought "hmm, perhaps I should double check those figures."

Eric


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6187932 - 11/11/13 02:26 AM

Yeah Eric - It's not easy being me - I'm just so predictable:-)

On the bright side, your focal ratio has gone from apx F/5.4 to apx F/6. - This makes things somewhat easier on eyepieces, as they don't have to deal with as steep of a light cone. - Also there will be less false color. - Darker sky background...

Hey! - It sounds like you Won!

Take care,

-Chuck


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6188067 - 11/11/13 07:04 AM

Thanks Chuck.

I'll be sure to report back once I have tested them.

Eric


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Rich56
member


Reged: 06/02/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6188228 - 11/11/13 09:40 AM

I know from my own bino experiences that A LOT can be said for 45 degree eyepiece viewing, especially when mounted on a sturdy tripod.

Hopefully you'll get them in time for ISON if it shows up.

Rich


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Rich56]
      #6189331 - 11/11/13 07:57 PM

IIRC....I measured less than 60mm clear aperture on the BT-70s 45s with both 19mm and 24mm Panoptic eps. The BT-70s 45s had very noticeably less contrast and image brightness than the 16x70 Fujis that I compared side by side.

For those "sitting on the fence" I suggest thinking about the APM 100 Semi APO 45s which measure the advertised 100mm.

For $1100 you also get 2 sets of very good eyepieces (I suggest the 12mm and 19mm) which are unbranded Astro Tech Flat Field.

That's a 270% increase in light gathering for less than 30% price increase.

Your money, your choice.



Edited by Mr. Bill (11/12/13 12:53 AM)


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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6189475 - 11/11/13 09:08 PM

And that would be this one: http://www.apm-telescopes.de/en/product.html?info=1893

Is that correct, Bill?

Thanks,

-Chuck


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6189502 - 11/11/13 09:25 PM

That's it, Chuck...Rich V and I did a "shootout" with the Oberwerk BT 100 45 this last summer. Check my past postings.



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GlennLeDrew
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6189717 - 11/11/13 11:06 PM

I don't know about the 45 degree variant, but the newer 90 degree BT-70 MK II does operate at or very nearly the full 70mm aperture. The original did operate at 60mm. It's easy to distinguish between the two, the newer one has an enlarged rear casting to accommodate the larger pentaprism.

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Stacy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6189818 - 11/12/13 12:38 AM

Nice read!

Never did see the white comparison of the Kowa and the APM Glen wanted. Anybody ever figure it out? (the dimmer 100mm vs. 80mm)

How does the Obie BT70 45 compare to the Vixen BT81S-A?

Edited by Stacy (11/12/13 12:43 AM)


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Stacy]
      #6189831 - 11/12/13 12:47 AM

Quote:


How does the Obie BT70 45 compare to the Vixen BT81S-A?




Had reviews on both....check my previous posts for relevant threads...



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aa6ww
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6189909 - 11/12/13 02:23 AM

1095 ERO = 1468.18 US Dollar, throw in shipping from Germany and your talking closer to $1600, nearly twice as much as the Oberwerk BT-70-45 Binoculars.

I have these when they were selling for $1100. They are nice but I prefer using my 70mm Oberwerk Ultra's because as Eric was finding out, especially in his Mag 6.5 skies with his 70mm Skymasters, 70mm of aperture is plenty.
With many people, sometimes bigger isn't always better.
Sacrifices in field of view, weight, cost, all factor in.
If he loves his Skymaster 15x70's, I have no doubt he's gonna love his new Oberwerk 45° 70mm Binocular Telescope.

Superb optics, high-quality workmanship, and interchangeable eyepieces make this product a winner.
....Phil Harrington

..pretty good credentials!!

...Ralph



Quote:

IIRC....I measured less than 60mm clear aperture on the BT-70s 45s with both 19mm and 24mm Panoptic eps. The BT-70s 45s had very noticeably less contrast and image brightness than the 16x70 Fujis that I compared side by side.

For those "sitting on the fence" I suggest thinking about the APM 100 Semi APO 45s which measure the advertised 100mm.

For $1100 you also get 2 sets of very good eyepieces (I suggest the 12mm and 19mm) which are unbranded Astro Tech Flat Field.

That's a 270% increase in light gathering for less than 30% price increase.

Your money, your choice.






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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: aa6ww]
      #6189920 - 11/12/13 02:37 AM

Ralph,

From the APM website:

1.095,00 EUR
incl. 19 % VAT excl. shipping costs
Netto Export Preis: 920,17 EUR

Don't forget about the VAT...

-Chuck


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Eric63
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: aa6ww]
      #6190131 - 11/12/13 08:27 AM

I fully agree with you Ralph.

Thank you all for your input but I think what is being lost here is the reason for the BT70. I’m looking for a light grab and go setup that will give me a bit more flexibility than my current 15X70. When the temperature goes below freezing here, I really don’t want to mess with complicated setups. That’s why I used my 15X70’s last winter. And as I noted earlier, I found my 15X70 to be actually quite nice, therefore these will be even better. Unfortunately many get lost in the details and forget the other reason come into play when choosing an instrument. In my case, ease of setup, less neck strain, light, portable and good for daytime use also all come into play.

Last year after having bought my 127Mak I became obsessed with the fact that it only had 118mm of aperture and hence a larger CO. Fortunately wise and experienced members of the Cat forum urged me to forget the numbers and simply look through them. They were right, the views were simply amazing and the portability and ease of setup made them that much more enjoyable. I even compared them to my 150mm reflector and to be honest, the difference was not enough to make me regret my choice. I am fortunate to have access to dark skies, which more than make up for a few mm’s here and there.

I am not buying these for detailed DSO viewing; I simply want to enjoy how DSO’s are framed under dark skies. I am also not buying them for resolution; I have my telescopes for that. I am buying these because of the reasons noted above.

I also agree with Ralph's comment about cost. Even without the VAT, the cost of the APM is over $1400 with shipping. And let’s add the beefier mount that will be required. So I am now looking at a significant investment for something that no longer fits the bill as a light grab and go instrument. In the end I am very happy with this choice and very fortunate to have a wife that wants to give me such a nice present.

I appreciate the enthusiastic and dedicated input from the more experienced members of this forum , but let’s also not forget the big picture.

Eric


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Stacy]
      #6190409 - 11/12/13 11:05 AM

Quote:

Nice read!

Never did see the white comparison of the Kowa and the APM Glen wanted. Anybody ever figure it out? (the dimmer 100mm vs. 80mm)






Think the upshot of that was the Kowa had better glass and coatings and that accounted for the difference.


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: aa6ww]
      #6190439 - 11/12/13 11:21 AM

Quote:


Superb optics, high-quality workmanship, and interchangeable eyepieces make this product a winner.
....Phil Harrington

..pretty good credentials!!

...Ralph






If you read my thread mentioned in an above post, I point out that I bought the BT-70 45s on the strength of Phil's S&T review. Unfortunately, he forgot to do his homework and check effective aperture.

Lessons learned.



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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6190447 - 11/12/13 11:23 AM

Phil's review reads like an ad to me.

-Chuck


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Rich V.
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6190468 - 11/12/13 11:34 AM

It struck a lot of us that way, Chuck.

One must usually take these cursory "reviews" with a grain of salt...

Rich


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Stacy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6190651 - 11/12/13 12:58 PM

Quote:

I appreciate the enthusiastic and dedicated input from the more experienced members of this forum , but let’s also not forget the big picture.

Eric




Your points are not lost. Of course you will enjoy your binoculars. But many others (especially us optical propeller-heads) like to digest and analyze the numbers as we may be considering a similar purchase, and have different criteria.

If/when I pop for another 70mm or higher bin, I have decided it will have to be a 45 or 90 for ease of setup and use. However I would not consider the Obie BT7045 at this point. Why pay for 70's when with certain ep's you are getting less than 60mm? If that's the best $800 can buy right now, I would just forgo it until something else comes along. Sure, $800 is a great price for a nice pair of 70mm 45 degree binos. But would you spend the same money on a BT-60-45, when for maybe $200 more you could get a true 80 or 90mm? Many will have different answers, but I know what mine is.


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Stacy]
      #6190910 - 11/12/13 03:13 PM

A couple of comments....

I initially bought the BT81S-A looking for a lightweight relatively large aperture 45 or 90 degree ocular binocular with interchangable eps for a upcoming trip to Australia. After reviewing the 90 degree models available at the time, I decided that 45 degree was the only good option.

The BT81 seemed like an ideal choice (looking at the "shiny brochure.") Unfortunately, there are severe prism light leakage issues which manifest themselves as ghosting while sweeping MW starfields. Returned to OPT for refund.

When I saw the Harrington review, I decided to try the BT70s despite the fact that I considered the 80mm aperture to be the smallest acceptable...getting desperate at that point.

Well, unfortunately the 70mm turned out to be 60mm...totally unacceptable. I might as well take the Fuji 16x70s in spite of being straight thru and fixed eps. Reurned for refund to Big Binocular.

After some thought I decided that the APMs, although weighing more than I wanted to deal with traveling would work and give me an honest 100mm aperture.

Rolled the dice once more (especially considering the cost of international return) and lucked out...a reasonable package that gives me a carry on case for the binos and the Manfrotto 475B tripod and 501HDV head provides solid stability for the 16 pound binoculars. Throw the 24mm and 19mm Pans and 12mm Astro Tech eps in and you have a pretty formidable optical package for serious examination of the southern skies.

Anyway, that's my story and I'm sticking to it.


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Eric63
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6190975 - 11/12/13 03:34 PM

Gentlemen, you all have valid arguments. I guess it all comes down to perspectives and what best fits our needs.

Thank you again for your input.
Eric


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Stacy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6191244 - 11/12/13 05:53 PM

Quote:



Mr. Bill said:

A couple of comments....

....snip ....

Anyway, that's my story and I'm sticking to it.




Thanks Bill. That saves me another trip through your long and storied past.

So I see you have already traveled this path well and that information and experience is extremely valuable to me. Thanks so much for sharing.

What I gather, is that the APM-100, in your opinion (and it would seem a few others) despite it's minor flaws, is the best bank for the buck in this general price area. Although the price does seem to have gone up a bit, they do occasionally advertise on Astromart, special deals in US dollars that include shipping.

I sold the parallel bino mount, as just a bit too unwieldy. Bino chairs I have been able to find, also seem underdeveloped and over-priced. That leaves me with a 45 or 90 design if I want to go bigger. The price of admission on the APM-100 seems reasonable, but I would be biting my nails to see if my sample made it across the world in collimation. I think I may keep an eye on the used market to see if something pops up.

Thanks again.


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Vondragonnoggin
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Stacy]
      #6191259 - 11/12/13 06:02 PM

Congratulations. Owning the Garret BT70/90 has been satisfying for the most part. The Garret's are F/6.2 though with 22mm clear aperture at the ocular so using field stops in excess of about 24.5 mm will cause some vignetting. The most practical TFOV without light loss from vignetting has been about 3 degrees. The Obie's at F/5 should prove to have substantially wider views even if less clear aperture at the objective. Very nice.

I think you will find yourself using them all the time because of size and weight.


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KennyJ
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Vondragonnoggin]
      #6191312 - 11/12/13 06:24 PM

< I think you will find yourself using them all the time because of size and weight. >

I agree wholeheartedly!

While personal circumstances of location, financial clout and available free time affect all of us in different ways, for the majority of us, I suspect the "grab and go" aspect is probably the most important of all -- and let's face it, for two-eyed, night sky viewing, ANGLED binoculars just have to be preferable!

Kenny


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GlennLeDrew
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: KennyJ]
      #6191341 - 11/12/13 06:43 PM

I am somewhat surprised that the BT-70-45 works at 60mm. But the original BT-70-90 did also. However, the one I did check over (and tweak the collimation) for a friend did perform pretty well optically. I think that the stopping down of the aperture did improve at least the chromatic aberration. At higher power the diffraction pattern was rather clean.

To show that 60mm is no mean aperture, note that my current main instrument is a 50/60mm 'hybrid'. In the 20.8X60 mode I've discerned the needle of edge-on galaxy NGC 4565. Markarian's Chain of galaxies is well seen. The challenging Cocoon nebula is glimpsed without filtration. That's just the tip of the proverbial 'berg of subtle stuff within range. And of course the bigger things are often seen to better advantage than through larger instruments.


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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: KennyJ]
      #6191359 - 11/12/13 06:52 PM

Does anyone here remember when it was the the term "Quick Look Scope" morphed into "Grab and Go"?

It seems that the Quick Look Scope was a 60's sorta thing - I've built a few of them, mostly short focus 4.25" and 6" Nexts - Mountless Dobs, if you will. - AKA RFTs (Rich Field Scopes)

Binoculars are the Ultimate QLS/RFT!

Thanks,

-Chuck


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Eric63
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: KennyJ]
      #6191387 - 11/12/13 07:06 PM

Kenny and Eric, I think you both hit the nail right on the head. In my situation, these will be my most used instrument.

Kind regards
Eric


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Stacy]
      #6192744 - 11/13/13 02:10 PM

Quote:


What I gather, is that the APM-100, in your opinion (and it would seem a few others) despite it's minor flaws, is the best bank for the buck in this general price area. Although the price does seem to have gone up a bit, they do occasionally advertise on Astromart, special deals in US dollars that include shipping.

I sold the parallel bino mount, as just a bit too unwieldy. Bino chairs I have been able to find, also seem underdeveloped and over-priced. That leaves me with a 45 or 90 design if I want to go bigger. The price of admission on the APM-100 seems reasonable, but I would be biting my nails to see if my sample made it across the world in collimation. I think I may keep an eye on the used market to see if something pops up.





I think the Euro price is the same....the exchange rate has changed.

IF you can find a used APM 100 45, make sure it is the most recent version that allows standard 1 1/4 eps. I bought a used one that turned out to be an earlier version that used factory eps but would not focus with my other eps. Returned to seller.



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Stacy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Mr. Bill]
      #6192762 - 11/13/13 02:18 PM

Quote:

Mr. Bill said:

I think the Euro price is the same....the exchange rate has changed.

IF you can find a used APM 100 45, make sure it is the most recent version that allows standard 1 1/4 eps. I bought a used one that turned out to be an earlier version that used factory eps but would not focus with my other eps. Returned to seller.






OK, thanks Bill, good point. Thanks again for all your hard work.


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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Stacy]
      #6192776 - 11/13/13 02:27 PM

Actually, the USD has fallen a bit lately re: the EUR.

https://www.google.com/search?q=eru+usd&oq=eru+usd&aqs=chrome..69i57....

Thanks,

-Chuck


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Mr. Bill
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6192841 - 11/13/13 03:00 PM

Just pulled out paperwork...

June 21 2013 paid 947.54 Euros which tranlates into $1095 + $155 shipping or $1250 USD.

That works out to xchange of 1.319 in June...today's is 1.35.

Looks like today's USD price is $1197.38. Price has gone up about $100.

Maybe increase is due to Chinese prices to APM going up. I seem to remember Kevin B. at Big Binocular mentioning upcoming price increases during discussion of returning BT-70s this June.



Edited by Mr. Bill (11/14/13 02:42 PM)


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mattyfatz
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6192896 - 11/13/13 03:39 PM

congrats.. How will you mount them?
A nice smooth ALT-AZ mount I hope. What a sweet way to star hop!


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Eric63
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: mattyfatz]
      #6192938 - 11/13/13 04:06 PM

In spirit of keeping these as grab and go as possible, I plan on using a Manfrotto 055XDB tripod with a MVH500AH head. I could also use an L bracket on my AZ4 if I want more stability.

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aa6ww
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6264820 - 12/21/13 05:23 AM

have you tired them out yet Eric?

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Eric63
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: aa6ww]
      #6265056 - 12/21/13 10:13 AM

Hi Ralph

I received my BT70 about two weeks ago, but the weather has been so horrible that I have only had a very brief outing one evening. We have had nothing but clouds and the very few nights it was clear, the temperature fell to -40C. I was therefore limited to viewing rooftops 250m away and a quick peak at the moon and Jupiter in between clouds one evening.

In short I like these very much for the grab and go need that I have. They are light, very easy to transport, very quick to setup and the tripod/head combo is perfect for this Binocular. The movement is very smooth with just a little shaking at high magnifications.

Now, I am a complete beginner so please take this brief review with a grain of salt. Also, I just want to note that I am fully aware that this binocular only has 63mm of clear aperture as opposed to 70mm. This did not stop me from getting these and I am very happy with my choice. This is what I have found so far with my limited tests.

I ordered the binoculars with a Manfrotto 055XDB tripod with an MVH500Ah head. I also ordered a multi reticle finder and a pair of 8mm EP (47X). The scope came with 24mm EP (16X) and I already had two 15mm Paradigms (25X). One evening I was able to view Jupiter and the moon in between clouds and used the three magnifications. I saw little to no false colour which made me very happy. Jupiter’s moons were very nice and the view was very crisp at both 16X and 25X. I find the 8mm EP more of a novelty. At that magnification I find one barrel to be slightly sharper than the other. The cloud belts on Jupiter were visible in the left barrel and less distinct in the right. With both eyes however they were very distinct. I much prefer the view in my 127Mak at 47X but I did not buy these binoculars for high power. The Moon however, is another story and the 8mm is very nice and it is very hard to notice any difference between barrels. To be fair I also have to note that the seeing was only 2/5 and that this is still a fast achromat. I really loved this binocular on the moon and seeing it with two eyes that close was a treat. I think I will now get a binoviewer for my Mak.

I had a quick peak at some stars in Orion and the colour rendition was beautiful, the only slight flaring that I could notice was caused by my eyes ( I see a little flaring in every single instrument I have tried). But I can’t wait to try this on the open skies, which is really what I bought it for. The colour of Betelgeuse was very striking and I see how I will love scanning the sky with this instrument. Last time I scanned the sky with my Newtonian, the star colours were uninspiring.

My roof top test confirmed that at 47X one barrel is slightly sharper (the grain in the roof shingles at 250 m away was a bit sharper in the left). I then tested different magnifications to see when the view was exactly the same on either side and found that figure to be around 35X. I also tested them side by side with my 15X70 Skymaster’s for kicks and interestingly enough I found the BT70 to be only a tad sharper on the roof tops, but the colour was much better. The BT70 produced a natural colour while the Skymaster’s gave a slight tint of yellow. The Skymasters have a wider FOV (4.5 degrees compared to 4 degrees for the BT70) and it is noticeable in the side by side test.

I have yet to check for sharpness at the edge of field or do any kind of star test on these, but I plan to do so when the weather improves.


Pros so far:
• smooth tripod and head.
• light grad and go setup.
• sharp on axis views (did not fully test off axis)
• comfortable viewing position with 45dgree angle.
• Beautiful colour rendition.
• Little to no false colour (noticed only on rooftops during daytime).

Cons so far
• Focuser a bit stiff in each barrel. This may be a problem in the cold. I have added a large clothespin to each knob when viewing to help with fine focusing.
• One barrel is slightly sharper than the other at high power.
• High power is more of a novelty. Sharper views in my Mak at low power.
• Need an Allen Key to take the finder on and off


Eric

Edited by Eric63 (12/21/13 11:57 AM)


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Rich56
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6265144 - 12/21/13 11:25 AM

Something tells me that using a pair of higher quality eyepieces Panoptics or Naglers might help.

Something else to add to your last second Christmas wish list??


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Eric63
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Rich56]
      #6265159 - 12/21/13 11:43 AM

And I thought I could take a break from astro shopping

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JustaBoy
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6265237 - 12/21/13 12:44 PM

Hi Eric,

When you say that one barrel is sharper than the other I assume that you are looking with only one eye - the same eye for both?

Thanks,


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Eric63
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Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6265329 - 12/21/13 01:47 PM

That's right. In fact same eye and same eyepiece to be sure. With both eyes it's all good.

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aa6ww
scholastic sledgehammer
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Reged: 10/23/11

Loc: Sacramento, Calif.
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6265371 - 12/21/13 02:10 PM

I took out my 100mm and my 15x70 ultra's out to check out comet Lovejoy this moring, getting out there about 3am. It was a spectacular site in my 15x70's, since the wide field of view really helped see the huge thin tail.

I use to use a pair of 11mm Naglers with my APM 100mm 45 deg bino's but they were too much magnification. I got sharper clearer star patterns using the 13 naglers. So I just kept the 13 Naglers and my 24 PanOptics for my binoculars. and really, 90 percent of the time, I 24 PanOptics are in them.
Regardless of the quality of your eyepieces, 47x may be pushing your bino's. My 11 Nagers were about that much magnification, and just didn't like how things looked.
I use the 11 Naglers with my denkmeiers though, so its all good.
Sounds like your going to be happy with them, especially the portability of them. Its just a mater of finding the right sets of eyepieces that make everything great.
Hopefully you can get in some comet hunting this time around before Lovejoy fades away.

Ralph

Quote:

Hi Ralph

I received my BT70 about two weeks ago, but the weather has been so horrible that I have only had a very brief outing one evening. We have had nothing but clouds and the very few nights it was clear, the temperature fell to -40C. I was therefore limited to viewing rooftops 250m away and a quick peak at the moon and Jupiter in between clouds one evening.

In short I like these very much for the grab and go need that I have. They are light, very easy to transport, very quick to setup and the tripod/head combo is perfect for this Binocular. The movement is very smooth with just a little shaking at high magnifications.

Now, I am a complete beginner so please take this brief review with a grain of salt. Also, I just want to note that I am fully aware that this binocular only has 63mm of clear aperture as opposed to 70mm. This did not stop me from getting these and I am very happy with my choice. This is what I have found so far with my limited tests.

I ordered the binoculars with a Manfrotto 055XDB tripod with an MVH500Ah head. I also ordered a multi reticle finder and a pair of 8mm EP (47X). The scope came with 24mm EP (16X) and I already had two 15mm Paradigms (25X). One evening I was able to view Jupiter and the moon in between clouds and used the three magnifications. I saw little to no false colour which made me very happy. Jupiter’s moons were very nice and the view was very crisp at both 16X and 25X. I find the 8mm EP more of a novelty. At that magnification I find one barrel to be slightly sharper than the other. The cloud belts on Jupiter were visible in the left barrel and less distinct in the right. With both eyes however they were very distinct. I much prefer the view in my 127Mak at 47X but I did not buy these binoculars for high power. The Moon however, is another story and the 8mm is very nice and it is very hard to notice any difference between barrels. To be fair I also have to note that the seeing was only 2/5 and that this is still a fast achromat. I really loved this binocular on the moon and seeing it with two eyes that close was a treat. I think I will now get a binoviewer for my Mak.

I had a quick peak at some stars in Orion and the colour rendition was beautiful, the only slight flaring that I could notice was caused by my eyes ( I see a little flaring in every single instrument I have tried). But I can’t wait to try this on the open skies, which is really what I bought it for. The colour of Betelgeuse was very striking and I see how I will love scanning the sky with this instrument. Last time I scanned the sky with my Newtonian, the star colours were uninspiring.

My roof top test confirmed that at 47X one barrel is slightly sharper (the grain in the roof shingles at 250 m away was a bit sharper in the left). I then tested different magnifications to see when the view was exactly the same on either side and found that figure to be around 35X. I also tested them side by side with my 15X70 Skymaster’s for kicks and interestingly enough I found the BT70 to be only a tad sharper on the roof tops, but the colour was much better. The BT70 produced a natural colour while the Skymaster’s gave a slight tint of yellow. The Skymasters have a wider FOV (4.5 degrees compared to 4 degrees for the BT70) and it is noticeable in the side by side test.

I have yet to check for sharpness at the edge of field or do any kind of star test on these, but I plan to do so when the weather improves.


Pros so far:
• smooth tripod and head.
• light grad and go setup.
• sharp on axis views (did not fully test off axis)
• comfortable viewing position with 45dgree angle.
• Beautiful colour rendition.
• Little to no false colour (noticed only on rooftops during daytime).

Cons so far
• Focuser a bit stiff in each barrel. This may be a problem in the cold. I have added a large clothespin to each knob when viewing to help with fine focusing.
• One barrel is slightly sharper than the other at high power.
• High power is more of a novelty. Sharper views in my Mak at low power.
• Need an Allen Key to take the finder on and off


Eric




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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: aa6ww]
      #6265536 - 12/21/13 03:48 PM

I plan on taking them with me to the cottage over Christmas. I have dark skies there and I'm sure they will not disappoint. I love the 45 degree angle, you cannot imagine the difference in comfort it makes. Also, being able to get into the 20x to 30x range will add a whole new dimension to binocular viewing. The cottage is at a small ski resort and luckily they have no night skiing.

I think I will also keep my eyes open for 24 Pans in the new year. Many have recommended them for a 127Mak and now they are recommended again for BT binoculars.

Eric


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6265573 - 12/21/13 04:06 PM

Or 22mm Vixen LVWs - Excellent correction at short focal ratios, and they wrote the book on Comfort!

Also a wee bit narrower field than the Pans (65°), so less likely to vignett.

I highly recommend!


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6265652 - 12/21/13 04:47 PM

Thanks Chuck, I will keep those in mind too.

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KennyJ
The British Flash
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Reged: 04/27/03

Loc: Lancashire UK
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6265666 - 12/21/13 04:52 PM

Going by the thread title alone, I'm just relieved this is about the decision to purchase and consequently enjoy a product, rather than becoming so frustrated by it that the owner felt no other course of action appropriate than firing a gun at it!

Kit Carson


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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: KennyJ]
      #6265672 - 12/21/13 04:55 PM

You're losing it Kit - You know they don't allow no guns in the talk room!

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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6265734 - 12/21/13 05:24 PM

Do you think a monopod would work with these?



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JustaBoy
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Reged: 06/19/12

Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: Eric63]
      #6265773 - 12/21/13 05:46 PM

Please listen Very Carefully, Eric, because I'm only gonna say this once.

Go to a Thrift Store and get a Monopod and then - YOU tell us!

Don't give me any of this 'bleep' about how all the good ones have already been given to friends, because I already heard that one! - Ok?


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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: Pulled the Trigger on Oberwerk BT-70-45 Binoculars new [Re: JustaBoy]
      #6265798 - 12/21/13 06:03 PM



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