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Equipment Discussions >> Binoviewers

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Eddgie
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Adapter to connect Denkmeier to Baader diagonal???
      #5454827 - 10/04/12 10:11 AM

Has anyone seen a solution that would allow a Denkmeier or Earthwin Bino to a Baader prism diagonal?

I really want to keep my back focus as short as possible, and this is the thing I love about the Baader Maxbrights, but I find myself wanting to be able to use a 24mm Pan type eyepeice in my binos.

The Mark V is of course the obvious but expensive choice, but if there is a way to connect the Denkmeier or the Earthwin body to the Baader Prism, I may go in that direction.

So, if anyone has knowledge of an adapter or mating rings or something, please let me know.

Thanks!


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Tamiji Homma
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5454856 - 10/04/12 10:36 AM

Hi Ed,

I have a custom adapter designed and built by Starlight Instruments to connect
Denk binoviewer to T2 system. It is on left.



They could have reduce two more millimeters...

I think Precise Parts can design/build what you are looking for.

Here is a start. I think they can build an adapter up to your specification.
http://www.preciseparts.com/ppmain/adapter.html

Tammy


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Eddgie
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Tamiji Homma]
      #5454906 - 10/04/12 11:01 AM

Hi, Tammy. Thanks for the response.

If you would not mind my asking, can you tell me how much Starlight charged? I don't mind the little eaxtra length.

Also, is that a Baader T2 diagonal in the picture? How does the binoviewer rotate? Is there some kind of lock screw?

Again, I appreciate your help.

Regards.


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Tamiji Homma
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5454944 - 10/04/12 11:38 AM

Hi Ed,

It is $174 for adapter itself, $50 for black oxide coating. It is expensive adapter. The diagonal is Baader T2 Prism Star Diagonal in the picture.

Here is more closeup photos. The custom adapter fits to Baader Quick Changer System. So you can rotate it as you wish.



Tammy


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Eddgie
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Tamiji Homma]
      #5455072 - 10/04/12 01:08 PM

Ah, Ok, I see.

So there is another component...The collar on the T2 to attach it to the adapter.

Yes, this gets expensive fast.

I went to the web site you sent where they build custom adapters, but I was unsure that I understood the configuration. It had the baader 1.25" diagonal on one side, but the other side (eyepiece) only have "Denkmeier Power Sitch".

Do you know if the Denk Power Switch on the telescope side uses the same threads as the bino face itself? For example if the Denk Power Switch has $89, so that seems reasonable.

I may bite the bullet and buy some Mark Vs though. But it is a big bullet for sure.... LOL.

Again, I thank you for your response.


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johnnyha
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5455388 - 10/04/12 04:51 PM

The Powerswitch uses the same threads as the Denk itself. You can remove the Powerswitch and connect the Denk nosepiece directly to the Denk, hence = same threads.

I had checked before and Precise Parts does make that part Eddgie, talk to the owner and I'm sure he can confirm this for you. If you do not want to use the Quick Changer then you would simply get an adapter that connects the Denk to male T threads of the T2 prism diagonal. You do not need the dovetail and Quick Changer that the MkV uses. The Denk can be screwed directly to the T2 diagonal with the right adapter - Denk to male T thread. So the adapter you want would have female T-threads on the diagonal side.


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Eddgie
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: johnnyha]
      #5455414 - 10/04/12 05:08 PM

Perfect info. And yes, I would prefer to connect the bino directly to the T2 threads.

Thanks a million!

Edited by Eddgie (10/04/12 05:10 PM)


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johnnyha
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5455425 - 10/04/12 05:18 PM

Great. You probably want the adapter to be at least 1/2" long so you don't have problems with clearance.

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Tamiji Homma
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5455426 - 10/04/12 05:20 PM

Hi Ed,

Here is photo of individual parts that I have.



I think that Precise Parts makes Dovetail-male thread -> T2 female thread adapter using online tool. However, I wouldn't recommend it.

I think it is better ask Precise Parts to build something that I asked Starlight Instruments, Denk Dovetail male -> pseudo Baader Quick Changer Ring (#T2-07) and get Baader Quick Changer (#T2-06). I don't know Precise Parts gets you cheaper price or not, though

The #T2-06 T2 female thread attaches to T2 Prism Diagonal male thread.
The custom part, pseudo Baader Quick Changer Ring is screwed into bottom of Denkmeier binoviewer using Dovetail thread.

Tammy


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johnnyha
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Tamiji Homma]
      #5455443 - 10/04/12 05:30 PM

Tammy what are your thoughts regarding your recommendation to forego attaching the Denkmeier directly to the T2 prism diagonal? Is that dovetail and Quick Change ring strictly necessary?

Thinking about it, I guess you would need some of the Baader spacer rings to make sure the diagonal comes out in the correct orientation... ah OK I see. Yes the Quick Changer is a better solution, there are times when the Binos need to be rotated in the diagonal... OK I just answered my own question!

I agree with Tammy then Ed. A direct connection is not optimal. Beeter to go with a dovetail and Quick Changer solution.

Edited by johnnyha (10/04/12 05:40 PM)


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Tamiji Homma
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: johnnyha]
      #5455459 - 10/04/12 05:41 PM

Hi Johnny,

There are a few reasons that I can think of, going with Quick Changer way.

1. You can attach/detach binoviewer easily.
2. You can rotate binoviewer easily.

However, you would add about 15mm using Quick Changer. If you need minimum lightpath, I guess it isn't the solution but reasons #1, #2 outweight the lightpath requirement at least to me as long as it comes to focus to infinity.

OK why not both adapters

Tammy


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johnnyha
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Tamiji Homma]
      #5455461 - 10/04/12 05:41 PM

I agree Tammy. I don't really care about the "Quick Change" so much but it would be frustrating not to be able to rotate the binos in the diagonal. It would probably still work, but not really optimal. If you only view alt/az then it might not be a problem though.

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Tamiji Homma
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5456834 - 10/05/12 04:39 PM

Hi Ed,

I decided to try Precise Parts T-thread<->Denk binoviewer adapter. I got confirmation email from Precise Parts, will be shipped on Oct 17th.

I'll let you know how well it fits after I try it.

Tammy


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Eddgie
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Tamiji Homma]
      #5456902 - 10/05/12 05:33 PM

Wow.. You must be an easy sell.. LOL.

I would very much appreciate a picture and feedback when you get it.

I really would like the Mark Vs because of their operation with the Baader diagonal, but I am really struggling with the price. The Denk IIs are looking good to me, though even the Denk IIs seem pricey.

Seeing the adapter and hearing feedback on how it works would sure help.

Again, thanks for the news.

Regards.


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junomike
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5456948 - 10/05/12 06:19 PM

Ed, Why not look for a used pair of TV Bino's? They have the T2 Ring (female) and can be mated to the Baader Diagonal directly (no other adapters needed)as seen here!

The larger Prisms allow for longer F/L EP's such as the 24mm Pans as well.

Mike


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johnnyha
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: junomike]
      #5457111 - 10/05/12 09:02 PM

Mike that is a terrific suggestion, the TV binos are top notch. I did not know they had a T-thread! It also looks like it has a retaining collar like the Maxbright so you can rotate the binos in the diagonal. Very cool.

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Eddgie
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: junomike]
      #5457193 - 10/05/12 11:01 PM

Are you sure that the Televues have the same clear aperture as the Denks and the Maxbrights? I was under the impression that the Televue's only had 25mm openings.

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Eddgie
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5457196 - 10/05/12 11:03 PM

Ah... Just looked it up. The Televue is listed as 27mm apertures. Will indeed consider these. Buy the time I buy the adapters for the Denks, I think the price would be similar, but I like the direct mating as in the Maxbright and Mark V.

Thank you very much John and Mike!

Edited by Eddgie (10/05/12 11:11 PM)


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johnnyha
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Tamiji Homma]
      #5457197 - 10/05/12 11:04 PM

Quote:

Hi Ed,

I decided to try Precise Parts T-thread<->Denk binoviewer adapter. I got confirmation email from Precise Parts, will be shipped on Oct 17th.

I'll let you know how well it fits after I try it.

Tammy




Great Tammy please keep us posted.


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johnnyha
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Re: Adapter to connect Denkmeier to Baader diagonal??? new [Re: Eddgie]
      #5457201 - 10/05/12 11:07 PM

Quote:

Ah... Just looked it up. The Televue is listed as 27mm apertures. Will indeed consider these.



With the direct connection to the T2 prism diagonal this would really be the "less backfocus" king!


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