236 replies to this topic

[elrod]

Binoviewer continued 

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[V-Rock]

Binotron27 works great with my C11,Istar 152 f12, Astro-tech 115mm f7 and ST80.

[lanfeng]

My first binoviewers DENK-B27 

Used for 130APO  152APO DOB16GOTO   DOB20GOTO...

[lanfeng]

My second and third：MarkV and zeiss

 

[lanfeng]

My fourth：TV  just so so

[lanfeng]

My fifth  Leica  I love it, but it's too heavy

[lanfeng]

using：nikon32  TVdelos  DENK40power switch   DIY 2inch Filter switch  DENK A45ocs  .Weight is 2.15 KG

 

[denis0007dl]

Very nice collection!

[Eigen]

My most used setup, a BW-Optik, its quite sharp, the limited 22mm prisms aren't an issue since I primarily bino at high magnification.

 

@denis0007dl: I believe that BW-Optik just modified German made bino's intended for microscopes, do you have any idea who the original manufacturer was?

 

 

Regards,

Eigen

[denis0007dl]

My most used setup, a BW-Optik, its quite sharp, the limited 22mm prisms aren't an issue since I primarily bino at high magnification.

 

@denis0007dl: I believe that BW-Optik just modified German made bino's intended for microscopes, do you have any idea who the original manufacturer was?

 

IMG-029012.jpg

 

Regards,

Eigen

Yes, but no idea.....

[garryblueboy]

My recently acquired Earthwin  set up

 

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Edited by garryblueboy, 21 June 2020 - 08:29 AM.

[Oscar56]

My recently acquired Earthwin  set up

9968CB34-C9EE-4991-8EA4-66E1744E079C.jpeg

EFA1FD59-F6C2-4AF2-9EBD-790C34D83A82.jpeg
 

I am using 24pans with my Earthwin. What EPs are you using?

[Marcus Roman]

Denkmeyer Binotron ready for my AP130EDF! Terrific wide field views!

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[mtminnesota]

My first binoviewer arrived today.

 

 

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[blakestree]

Oh, yes! CZAS binoviewer with Baader BBHS mirror diagonal and Takahashi Abbe Orthoscopic pairs.

 

 

[Siderius]

I wanted to try binoviewing with my 80mm Lunt LS80T Hα and bought a modified Zeiss 47 30 12 9902 binoviewer and a set of Zeiss 30mm diameter eyepieces from a fellow CN member.

 

 

When it came, sans-adapter, I tried it hand-held with the B1200 and found that, no surprise, it wants a lot of back-focus. I had to remove a 38 mm black-anodized spacer on the scope, ahead of the focuser. I also had to remove the 1.25 eyepiece clamping barrel, leaving a stub of male T2 threads on the B1200. I was able to get wobbly, somewhat focused  glimpses of something wonderful. I could achieve focus if I could mount this marvel close enough to the B1200.

 

I was fortunate, too, that removing the 38 mm spacer did not keep me from reaching focus with my fleet of single 1.25 eyepieces in a nearly fully extended focuser.

 

I needed a way to mount the Zeiss head to the T2 threads on my B1200 blocking filter diagonal and I decided to make my own adapter from delrin (acetal) on a CNC lathe. The ring needs to be split to fit in place and then held (circumferentially squeezed) with something like a band clamp.

 

It took a second try to match the taper specs precisely so that the ring makes a snug, enveloping grasp of the dovetail ring of the Zeiss binoviewer, closing to its original diameter to make perfect female T2 threads. The ‘band clamp’, is actually a snap-ring made from 2mm stainless spring wire. With the wire in place, the T2 threads tighten securely against the shoulder of the flange on the B1200 and the assembly feels like an integral unit, with no free movement or slop.

 

The feel and function are very satisfactory – the stiffness of rotation feels nearly identical to interocular adjustment of the Zeiss, and there is no fastener to fiddle with or depend on.  It adds 7 mm of path length, but B1200 T2 threads are only 5 mm tall, so it could be shortened to 6 or 5.5 mm, if desired.

 

I had made a 1.25 inch adapter sleeve for my Zeiss 25 mm focal length eyepiece (46 40 02) and its exquisite contrast and generous eye relief quickly made it my favorite single eyepiece to start with, and the first one I offer visitors.

 

Using a pair of them is most satisfactory. There is more surface detail contrast and it’s easier to study with stereo vision. I’m looking forward to more of this.

 

 

[denis0007dl]

 

I wanted to try binoviewing with my 80mm Lunt LS80T Hα and bought a modified Zeiss 47 30 12 9902 binoviewer and a set of Zeiss 30mm diameter eyepieces from a fellow CN member.

 

 

 

When it came, sans-adapter, I tried it hand-held with the B1200 and found that, no surprise, it wants a lot of back-focus. I had to remove a 38 mm black-anodized spacer on the scope, ahead of the focuser. I also had to remove the 1.25 eyepiece clamping barrel, leaving a stub of male T2 threads on the B1200. I was able to get wobbly, somewhat focused  glimpses of something wonderful. I could achieve focus if I could mount this marvel close enough to the B1200.

 

I was fortunate, too, that removing the 38 mm spacer did not keep me from reaching focus with my fleet of single 1.25 eyepieces in a nearly fully extended focuser.

 

I needed a way to mount the Zeiss head to the T2 threads on my B1200 blocking filter diagonal and I decided to make my own adapter from delrin (acetal) on a CNC lathe. The ring needs to be split to fit in place and then held (circumferentially squeezed) with something like a band clamp.

 

It took a second try to match the taper specs precisely so that the ring makes a snug, enveloping grasp of the dovetail ring of the Zeiss binoviewer, closing to its original diameter to make perfect female T2 threads. The ‘band clamp’, is actually a snap-ring made from 2mm stainless spring wire. With the wire in place, the T2 threads tighten securely against the shoulder of the flange on the B1200 and the assembly feels like an integral unit, with no free movement or slop.

 

The feel and function are very satisfactory – the stiffness of rotation feels nearly identical to interocular adjustment of the Zeiss, and there is no fastener to fiddle with or depend on.  It adds 7 mm of path length, but B1200 T2 threads are only 5 mm tall, so it could be shortened to 6 or 5.5 mm, if desired.

 

I had made a 1.25 inch adapter sleeve for my Zeiss 25 mm focal length eyepiece (46 40 02) and its exquisite contrast and generous eye relief quickly made it my favorite single eyepiece to start with, and the first one I offer visitors.

 

Using a pair of them is most satisfactory. There is more surface detail contrast and it’s easier to study with stereo vision. I’m looking forward to more of this.

 

Whats an nice setup!

Thats mine nostalgic binoviewer, I didnt see it longer time, and excellent 3 element W 10x/25 eyepieces!

 

Kind regrads

CS
Denis

[R Botero]

I thought I had posted here before....I love my Mark IV and Vs!  They now live at the back of a 10" f/20 Maksutov for double star observing.

 

Roberto

 

 

[Lentini]

Great Meadow.

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[John Anthony]

The original Baader Planetarium Giant Binocular Viewer from Astro-Physics, The BPINOV with 1.25X compensating optical element, TMB 92SS.  I do a lot solar viewing with it as well as lunar, I have two full sets of the University Optics volcano top ortho's that perform nicely with it. 

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[noisejammer]

Here we go ... Sweatfest around 2016 - 5 cloudless days of 34°C or higher....

 

APM 115/805 on DM-6 with Denk II's and Tak 30LE's

 

And Starfest 2018

 

TOA150 on AP 900GTO with Mk V's and Masuyama 35mm's

 

[BlueTrane2028]

Keeping it budget friendly for now, ended up with one of these as part of a larger astro gear buy out.  Orion Bak-4.

https://www.telescop...pes/p/52071.uts

Of course gotta show them in action (with a pair of 9mm Synta Expanses).



Was about the most fun I've ever had on the Moon, immediately set to getting a full 2nd set of Expanses, as I only had a pair in 9mm.

Edited by BlueTrane2028, 23 March 2021 - 12:41 AM.

[flint350]

Well, as is the curse of the hobby, my new Binotron 27 package arrived today just as a full 3-4 day forecast of heavy rain set in. So, I have nothing set up yet, but a couple of photos of the new arrival. I already have a pair of ES 24 and Morpheus 17.5, plus the Binotron built-in powerswitch, so I think I'm set for eyepieces. We'll have to see about the light path since my C9.25 has a Baader 2" external focuser and a Baader 2" clicklock diagonal.

 

 

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[Klaus_Lehmann]

...okay now here are mine (from top left to right): Zeiss Apo (very sharp); Leica Apo (the sharpest but bulkiest and heaviest of all, mirrors inside), two smaller Zeiss Apos (both very sharp), (bottom left): two older Zeiss with prisms inside, one customized with Lomo (Russia) prisms inside (pretty sharp but low cromatic Abberations), at least all the eyepiece stuff (microscope ones only) from Leitz Wetzlar (Periplan), Zeiss, Wild Heerbrugg/ Leica:

 

 

 

CS Roman

Edited by Klaus_Lehmann, 25 March 2021 - 03:13 AM.

[Klaus_Lehmann]

Hi Denis,

 

you're right with the coatings, but no, the bodies of the smaller ones from Zeiss with mirrors are made of aluminum diecast, not very heavy but aluminum. They are not as old as supposed to be. Zeiss made them to retrofit the laboval series and for older ones from Zeiss Jena with 23,2 mm eyepieces. So they come with two different connectors: the Zeiss west bayonett (around 44mm) and the Zeiss Jena with around 42 mm. Surprisingly the mirrors inside are just a little smaller (about 1-2mm) in diameter then in the bigger one.

 

My personal favorite is the Leica, even tough its heavier and bulkier, it is a tad sharper and better when it comes to contrast at Planets.

 

CS Roman

Edited by Klaus_Lehmann, 25 March 2021 - 07:35 AM.