Re: Disassembling Rubinar 10/1000

On Mar 26, 12:39 am, Bhogi <bh...@xxxxxxxx> wrote:
On 25 mar., 15:30, Winstone <winstonewar...@xxxxxxxxx> wrote:

On Mar 25, 7:55 pm, Bhogi <bh...@xxxxxxxx> wrote:
Here's a picture of my lens with the stop removed.http://www.ejarm.com/rubinar1000.jpg
I think I have a new version.

Where is the rubber grip in your picture?

It is out of the picture, sorry.

Mine
looks exactly like this:

http://www.rugift.com/photocameras/rubinar_1000_lens_for_canon_eos.htm

Here is mine.http://ejarm.com/rubinarall.jpg

So it is the same as mine. I wonder what you use to
put diagonal into it? I purchased a separate m42 to
1.25" adapter that is only 0.3" length. What adapter
did you use? Hope you can take a picture without
the rear cover because I'd like to see the adapter
you use.

I also made a far more practical tripod mount. The original is almost
useles for mounting on equatorial mounts.

Here are my notes from when I finally managed to figure out how to do
it (4 years ago).

Take photos of the process!

- first unscrew the "shoe" of the "mounting ring"
- unscrew the 3 screws inside the "mounting ring", rotate the ring to
find them
- remove the "mounting ring" towards the camera mount
- remove the rubber grip and unscrew the 3 screws

I can't remove the rubber grip because it's stuck between
the body. See again picture at:

You must remove the grip to unscrew the tiny screws. It's thin and
comes off easily you just have to lift it a bit somehow. Putting it
back on is also easy.

How many mm distance from the nearest boundary are the screws
located? If I can't lift all of them up. I'd just cut a portion of it.



- slip the focusing ring towards where the "mounting ring" was
- now unscrew the locking screws of the aluminum ring, correct
infinity focus etc.

Is the focusing ring also the aluminum ring? or different?

I Think it's all aluminium. It is screwed to the front of the lens
with 3 tiny screws.

Beware, when you remove the infinity stop you can focus to about 1m,
nearer than that the front might come off and you'll have difficulty
putting it back correctly.

Why do you say I'd have difficulty putting it back "correctly"?
What's correctly and incorrectly? You mean it can change
the collimination?

Separate issue. Do you know how to adjust the mirror
holder in case there was astigmatism? And it is possible
to test for astigmatism at daytime by defocusing it?

Thanks.

Win


If you feel adventurous you might like to unscrew the front after all
and clean the threads of the sticky grease and use some lighter
grease. The action will be much lighter. I used lithium grease but I
hear it's not good for optics. There is still no fogging of the optics
after 4 years.





Thanks.

Win- Hide quoted text -

- Show quoted text -

.

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