Question about Celestron CPC 800 (480 x 50mm) Telescope

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Scope eyepiece screw replacement.

Hi, Please could you help me? I recently purchased a Bresser Safari 20-60x80 Scope and I am very pleased with it's performance. However when adjusting the zoom the other day I found it to be a little stiff and so removed the outer casing of the eyepiece. On doing this, a small gold screw fell out and I haven't got a clue where it came from or how to put it back. I have replaced the casing and I can adjust, but I am concerned about this screw and that I may have displaced something. Maybe if I could see a drawing/ diagram of the eyepiece compnents I could replace the screw myself, but my concern is that my Scope may now not be at optimum performance, albeit looking through the Scope appears ok. Please could somebody be so kind as to advise? Tony Martin

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Dear Tony,
Please see properly at oject ring case or eyepiese plastic case.Their is a three screw.I thik one of this come out.

Posted on Jul 09, 2011


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SOURCE: Screw on Scope eyepiece fallen out.

Dear Tony Martin,
I give you solution earlier.
Dhananjay Raval -India

Posted on Jul 09, 2011

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1 Answer

How to use it and line it up cant see anything when i look true

  1. Get Stellarium or another fine astronomy program
  2. During the day, point the telescope at a part of the landscape about 100 yards away.
  3. Use the lowest power eyepiece (highest number) in the focal tube.
  4. Center the landscape object in the telescope.
  5. Align the finder scope so that it points exactly where the main telescope is.
  6. At night, leave the scope out to reach thermal equilibrium (about an hour for small reflectors and refractors)
  7. If the scope is on a EQ mount, polar align.
  8. Point the finder at the moon. The moon should be in the main scope also.
  9. Practice finding the moon before you start on the planets
  10. Once you are comfortable with the moon and planets, you can go for the deep sky objects

Feb 22, 2013 | Bresser Junior Dobson 76/350 Telescope

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I recently purchased a second hand bresser messier and would like to find a manual on how to work it

All of Meade's manuals are on this web site-- however this scope is only sold in EUROPE--- there may be one similar to it on the web site below which you can use to help you assemble it.

The manual only has assembly instructions. It will not tell you how to find objects in the night sky--- or how to focus the telescope--- or which eyepiece to use. All this comes with experience and by talking with other amateur astronomers. Find a local Astronomy club and JOIN--- the members will help you--

Meade's manual web site:

Aug 16, 2011 | Meade Bresser 4702100 Messier R102...

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Bresser, I have purchased a s/h Bresser refractor telescope with no instruction manual, where can I purchase or find one of these. The information from the scope is:- Bresser Optick. Refractor 0 60...

This is a small refractor telescope. Sorry no manuals-- BUT Meade scopes has a web site with all of their manuals. Look under the REFRACTOR heading for one that is similar to your scope. They all assemble and are used in a similar fashion.

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Hello... I'm kinda new to all this, so please bare with me! I recently purchased a used Orion Skyview 6 Deluxe EQ. The scope is in great shape and things look great through it. However, it did not...

First WHY would you use a erecting DIAGONAL in a reflector style telescope. Upside down images are completely normal for an astronomical telescope. You only need this diagonal for terrestrial viewing NOT for star gazing. ALL astronomical telescopes show upside down and or inverted images- it's completely normal.

If you cannot come to focus with the erecting diagonal, it's probably because the diagonal moves the eyepiece too far OUT away from the point where the scope comes to focus. Again-- you do not use those for night time sky viewing. Just stick the eyepiece directly into the focuser.

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The eyepiece size (diameter) is the standard 1.25 in.
Erecting eyepiece adapters can be used with this scope.
maximum magnification is 250x therefore highest eyepiece would be 3.6mm
most useful magnification of any scope is 150x (900/150= 6mm eyepiece
Eyepieces provided with scope (Huygens type) have a narrow field of view and are relatively poor for astronomy but should be fine for terrestrial viewing

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1 Answer

Missing an eye piece where can i get a replacement and how much? For a bressner reflactor telescope art no 96-18800

Eyepieces come in 3 sizes. .975, 1.25, and 2 inch. Your scope probably has a 1.25 inch hole-- eyepieces are sold by many different on-line retailers; here is one:

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Can't see out of eye piece

This is a reflector style telescope. The MIRROR is in the base! Light enters the front near the focuser and goes down the tube and bounces off the mirror and back to the front and through the eyepiece. The EYEPIECE end is pointed up.

Your scope TUBE should look like the reflector telescope on this web page:

Wish you had NOT bought this telescope. For about the same price you could have bought this:

The scope above has a 6 inch mirror which is almost twice the size of the scope you bought.

Dec 27, 2009 | Edu-Science (10166) Telescope

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Screw on Scope eyepiece fallen out.

Dear Tony Martin,
I give you solution earlier.
Dhananjay Raval -India

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1 Answer

I have a WO IBIS 80 APO Spotting Scope. How do use it with other 1 1/4" eyepieces? The packaged zoom eyepiece seems to have a threaded attachment to the scope.

sounds like it was designed to use only the eyepiece that came with it. here is an idea...mount the scope on a tripod with no eyepiece in take an 1 1/4" eyepice and place against the scope where you would put the eyepiece ..try to focus..if you cant, then slowly bring the eyepiece away from the scope till you see a sharp sure a machine shop can make a sleeve to screw into your scope and hold 1 1/4" at that point.any questions i can answer call me 5088331232

Nov 29, 2008 | Optics

1 Answer

What lens do i insert into scope to view the moon

The moon is big so use the 25mm. The Barlow will have a multiplication marking on it 2x 3x etc. A 2x Barlow lens will effectively double the power of the eyepiece you are using. Do not use the erecting eyepiece for anything other than land viewing. Erecting eyepieces generally reduce the amount of light reaching your eye and thus reduce brightness of the faint objects in the sky.
So basically just place the 25 mm lens in the focuser and point the scope at the moon and you will be amazed at what you can see and how bright it is.

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