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Modify Zeiss microscope head 47 30 11 - 9901

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#1 Space99

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Posted 05 June 2016 - 05:21 AM

Hi everyone,

 

I'm planning to modify my Zeiss microscope viewer to better suit astronomy.... it is a cheap way to get into bino-viewing.

At the moment it has a 45deg 'ball-head' prism ... not good for my C14 SCT with diagonal.... neck-breaking.... but the view is promising, without breaking the bank :)  

 

So... I'll upload pic of the anatomy of the unit seeking help how to get rid of the 'ball-head'

 

The C14 has ~4000mm fl.... so I don't need the 'first' lens group .... I think it is Barlow lens...  and it looks like there is a 'transfer-compensating' lens  after the 45deg prism.

...the SCT has plenty of BFL.... so I plan to remove that as well. 

 

Not sure how to dismantle  the 'ball-head' housing to remove it and machine an adapter for straight view....without the Barlow-transfer lens.

 

Any input/help/opinion or perhaps an optical drawing(?) appreciated.

 

Mick

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Edited by Space99, 05 June 2016 - 05:55 AM.

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#2 Space99

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Posted 05 June 2016 - 05:23 AM

The Barlow.

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#3 Space99

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Posted 05 June 2016 - 05:24 AM

The 45deg prism.

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#4 Space99

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Posted 05 June 2016 - 05:25 AM

The 'transfer-lens' ??

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#5 ron scarboro

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Posted 06 June 2016 - 10:20 PM

Interested as well. I have the same model. Mine has 3 tiny holes with 2 set screws (double stacked) in each one. However, removing them didn't loosen the ball head. 

 

I'm stymied on what to try now.


Edited by ron scarboro, 06 June 2016 - 10:21 PM.

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#6 Space99

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Posted 06 June 2016 - 10:35 PM

Hmmm... you may be lucky, try rotate the ball head....

I was looking for similiar set-screws, but I don't have them  :(



#7 Space99

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Posted 07 June 2016 - 05:21 AM

Keep searching for a disassembly drawing/instruction.... nothing.  I may have to use a chisel :lol: :axe:



#8 ron scarboro

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Posted 07 June 2016 - 08:41 AM

I've gotten to here, still stymied.  I purchased mine at a yard sale, so I'm not out much if it doesn't go back together.  :lol:

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#9 ron scarboro

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Posted 07 June 2016 - 08:53 AM

Ok, so all I needed was a punch and it is super tight, but comes out.


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#10 sonny.barile

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Posted 08 June 2016 - 07:02 PM

I like what you guys are doing.....looks like fun. I hope you keep posting your findings. 

 

Have you been able to determine the narrowest opening or prism size yet? 



#11 ron scarboro

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Posted 08 June 2016 - 10:36 PM

Now my problem is how to adapt eyepieces and a nose piece.  I saw astromist website, so I'm thinking about how to adapt some Baader eyepiece accessories to my unit.

 

My unit has a bit of delamination of the prism, so I'm thinking high powered unit as the delamitation is on the very outside of the FOV.



#12 Space99

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Posted 09 June 2016 - 04:25 AM

Well, I had a difficult time to remove a retaining ring made out of plastic. It was glued in  :foreheadslap:   ....popped-off, but it was a 'one-way-ticket'   .... can't reuse it.

All not lost...yet. My friend hacked off the 'ball-end' and machined a 1.25" adapter. I just have to put the prisms back and align them and secure the contraption without the plastic bit :crazy:



#13 sonny.barile

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Posted 11 June 2016 - 09:28 AM

You may be able to get a replacement retaining ring from McMaster........????

 

I have seen a lot of bino-microscopes get tossed where I work. They are not Zeiss but I wonder if any are worth picking apart to see what I can cobble. This looks like a fun project.


Edited by sonny.barile, 11 June 2016 - 09:28 AM.

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#14 ron scarboro

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Posted 15 June 2016 - 05:14 PM

So I got a couple of pieces today.  

 

I want to be able to reuse the Baader pieces if possible, so these ZWO c-mount to t-mount adapters will be used to attach the Click-Lock eyepiece adapters.

 

image3.JPG

 

The mockup...

image2.JPG

image1-1.JPG

 

My assembly skills are limited, so we'll see how this goes.

 

Best,

 

Ron


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#15 sonny.barile

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Posted 15 June 2016 - 06:42 PM

Looks good.....What does it weigh?



#16 denis0007dl

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Posted 16 June 2016 - 03:48 AM

Good job!

#17 Tom Masterson

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Posted 16 June 2016 - 10:36 AM

Nice work!

 

I did almost the exact same thing. The Zeiss unit I found already had 1.25" focusable eyepiece holders on it, so like you, I had to disassemble the unit and get rid of the 45 degree piece. It's been a while now, but as I recall I had to remove all the optics and machine off the bulb using a lathe at work. I had a thead in 1.25" nose piece but couldn't make threads so I machined the binoviewer base until I had a lose prress fit and epoxied the nosepiece in place. Worked great! After 5 years or so the beamsplitter coatings failed so I picked up a different model bino head. This one was attached to the 45 degree prism with screws so that part was easy. It had fixed eyepiece holders that I machined down and was able to take the diopter ones from the old binoviewer and put them on the new one with setscrews. The new binoviewer is compact and pretty light and gives very sharp views. Yes, it was hours of work and I could have saved up some money for an entry level commercial unit but enjoyed the project and was hoping the Zeiss optics would be better. Yeah, the prisms are small but I bored out the stop in the eyepiece holder to get a couple more milimeters. I use them mostly for the planets, Sun and Moon, so a wide field isn't needed. I'm extremely happy with my modified microscope binoviewers.

 

 

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Edited by Tom Masterson, 16 June 2016 - 10:37 AM.

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#18 denis0007dl

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Posted 16 June 2016 - 02:38 PM

Nice modification Tom!

#19 ron scarboro

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Posted 20 June 2016 - 05:24 PM

The finished product.  First light was pretty indistinguishable from my other units (MarkV and a similar model from Denis).  Clear aperture is 25.4mm at each eyepiece and 25.8mm at the telescope side (though I think the prisms are only 25mm).

 

All in I'm at $347

 - Binoviewer at yard sale - $70

 - T-Mount to C-Mount ZWO adapters - $42

 - Baader Click-Lock Eyepiece Adapters - $145

 - Heavy Duty T-2 Adapter - $90

 

image1-2.JPG

image2-1.JPG

image3-1.JPG

 

I'm not counting the eyepieces and diagonal that I already had, the sweat effort or the bandage for a skinned knuckle.

 

Best,

 

 

Ron


Edited by ron scarboro, 20 June 2016 - 05:26 PM.

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#20 denis0007dl

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Posted 21 June 2016 - 12:44 AM

Excellent job Ron!  :like:

Also, you get bino for very low price!

Congrats  :waytogo:



#21 Space99

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Posted 22 June 2016 - 07:37 AM

Ron, you are awesome   :)

 

Should write a 'manual' fro this ATM mod.... just saying   :bow:

The finished product.  First light was pretty indistinguishable from my other units (MarkV and a similar model from Denis).  Clear aperture is 25.4mm at each eyepiece and 25.8mm at the telescope side (though I think the prisms are only 25mm).

 

All in I'm at $347

 - Binoviewer at yard sale - $70

 - T-Mount to C-Mount ZWO adapters - $42

 - Baader Click-Lock Eyepiece Adapters - $145

 - Heavy Duty T-2 Adapter - $90

 

attachicon.gifimage1-2.JPG

attachicon.gif--URL::e702b97d406ed5b1c1258cd94d62a2ab-- image2-1.JPG

attachicon.gifimage3-1.JPG

 

I'm not counting the eyepieces and diagonal that I already had, the sweat effort or the bandage for a skinned knuckle.

 

Best,

 

 

Ron



#22 esculapius1975

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Posted 11 February 2017 - 07:56 AM

Hi, I just bought one of these 47 30 11 zeiss head and I am planning to modify it to use it as a binoviewer for my 4" refractor and for my 12" dob.
I was planning to keep the ball head, so I can avoid the diagonal on my refractor.

I have few questions for you

1) What connector would you use to adapt the dovetail to a 2" focuser?

2) how did you replace the eyepiece holder?

3(Do you have any CAD or 3d print model of these pieces?

4) how big the prisms are? Would they take 24mm 68 panoptic without vignetting?

Your

Giangi


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