Question about Zeiss 8 x 32 T* FL Victory Series Binocular - Green - USA w/Free Hard Case/Cleaning Kit

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Focus knob too tight to turn on model 579203

Center focus knob is "frozen".

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The eye piece is completely disconnected. Can not focus.


check that the center adjustment for focus is still in the thread of the adjuster knob
it can screw too far out and will not screw back in until you gently press the eye section back in as you turn the knob

Jan 26, 2016 | Optics

1 Answer

Focus knob turns but nothing moves


The Celestron manual for this scope has nothing to say, but on the underside of the focuser assembly, between the 2 focus knobs, you may see 2 screws.
They might be thumbscrews or some other screwhead type. One is the adjustment for the focuser internal clearance, or looseness, and the other is a focus travel lock.
If present, try backing both off 1/2 turn from tightness, and then experiment to see which is which. The focus lock will have no effect until tight, when the focuser will cease moving, as is now. The other screw will gradually remove looseness and rattle from the focuser until it just moves smoothly, with no back and forth loose feeling at the knob.
If neither of these screws is visible you will have to take it to a binocular and telescope shop, where they should not charge much.

May 02, 2012 | Celestron Optics

2 Answers

Kodak carousel 760h projector


Neither of the "trademarks" you mention were used by Kodak, so the lens must be a non-Kodak lens. First of all, remove the lens and look along its side - it should have a rectangular "rack" (dimensions of the "rack" are roughly 1/2 inch by 3 1/4 inches) with gear teeth that will connect with the corresponding gear (inside the projector) on the focus knob shaft. If the lens does not have this "rack", then you should try to find a lens that does. (One source for lenses is www.VineValleyImaging.com). Verify that the lens is on the focus knob shaft and does not appear to be damaged. If the gear on the focus shaft is damaged (or slipping) you will need to contact a Authorized Repair Dealer to see if parts are still available for your specific model. Let me know if you need anything else! Good Luck !! Jim

Oct 25, 2011 | Kodak Carousel 4600 Slide Projector

1 Answer

Here?s my problem : My scope model is LX200R 14?. I?ve pulled the focuser shaft out of the focuser arm pin. I?ve turned the locking lock knob several turns before putting back the focuser shaft. I...


Steward, this is Joe Lalumia-- I have seen your post on various forums. The 14 inch is different from the other smaller LX200 scopes.

Probably Dr. Clay, and or Andrew on the Yahoo Group LX200 forum will know the answer because they service these scopes.

Post a message there (register for free) and one of them will answer you about that very nice scope.

Clear Skies!

Joe

Dec 14, 2010 | Meade LX200R 14 in. Telescope

1 Answer

Meade 2120 (basic) az knob turns but does not turn the fork. How do I fix this? Siderial motor seems to work.


There is a small set-screw near the focuser shaft. Is it tight?

Also you may need to open up the focuser and see if the gears are not stripped.

Nov 02, 2010 | Meade Optics

4 Answers

8x25 minolta compact bionoculars center focus knob will not turn. Have taken screw off center knob and removed 4 rubber strips on bionocular body and looks like allen? screw underneath. No obvious way...


They don't make these things easy to take apart, or fix. Here's your best shot- take it into a camera repair shop, and see what they say. Some tech might know what you have to do to get it apart, or if it can come apart without damage or special tools.
Unfortunately, only the repair techs know how, and there aren't too many (if any) of them, since they often just charge a set amount and send a refurbished or new pair to the customer.
Wish I had a more specific answer, but good luck to you, and with just a bit, you'll figure this out.

Sep 20, 2010 | Minolta Compact Binocular

1 Answer

I have a used tasco galaxsee ,model 46114675,114x900 20 mm wide angle eye piece,no manuel.i have never owned a telescope before.problem:I can find objects in the sky,the few i have looked at are all the...


You are OUT of focus -- turn the focus knob until stars are POINTS of light NOT DONUT HOLES!

The disk with a dark center MEANS it is not in focus. Just TURN THE KNOB. Point the scope at the moon and try again.

Sep 01, 2010 | Tasco Luminova 40114675 (675 x 114mm)...

1 Answer

It will not turn thus i can not focus...the zoom ring moves but not the focus ring.


VT 595 the focus knob won't turn appears frozen other then that it works well

Jun 17, 2010 | NEC VT595 LCD Projector

1 Answer

Loose image when focusing


The focus knob can have the play reduced. Turn counter-clockwise a turn or 2, then loosen the knob's set-screw and carefully turn clockwise until a little drag is felt. Then tighten the set-screw.
A further item that may pertain to image shift, especially at low powers, is that the baffle tube that the main mirror slides on, may be loose in the back housing. There have been reports of poor thread engagement due to poor tolerences. That tube can be re-tightened - just be careful not to strip the threads!.

Jun 16, 2008 | Meade ETX-125EC (500 x 127mm) Telescope

1 Answer

Inoperative focus control


I'm assuming this is the Maksukov-Cassegrain telescope. Turning the focus knob CW should get you focus at infinity by moving the primary mirror away from the eyepiece. As you turn the knob it should move in and out relative to the real of the scope. If that's not happening the focus screw may have been turned CW too far and no longer be catching the threads in the rear plate of the scope.

You may be able to get it to rethread by holding the front of the scope toward the ceiling and turning the knob CCW. Attached is a photo of what the scope looks like under the rear housing. To prevent the focuer shaft from turning in too far the knob should be firmly seated agains the rear of the shaft. I think on this model this is a friction fit.

HTH, George
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Jan 23, 2008 | Optics

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