I bought aTasco Space Staion telescope (Model 49114500(Reflector) second hand,came with 4 different len's, but still can not see ANYTHING! There's a bright full moon out, but can not see anything. No light , nothing. This is my first spacestaion, and I'm not even sure if the lens are right. Anyone care to help this old man?

Go To this link and download the instructions: This model number is different but implies that it is similar to yours. Good luck. http://www.manualslib.com/manual/326927/Tasco-Spacestation-49060700.html#manual

Here are all of TASCO's manuals.
http://www.tasco.com/pages/instruction-manuals/

Most red dot finders take a small watch style battery available at Wal Mart and almost any watch retail store.

Did you take the cover off the front lens?

You do not have enough BACK-FOCUS, you need an extension tube for the focuser like this one:

http://www.skiesunlimited.net/index.php?CategoryID=132

Buy the correct size for the focuser hole--

Sorry-- there are several different ways it could go depending on the barlow. NEVER disassemble an eyepiece or a barlow. Only the outside surfaces need to be cleaned from time to time.

First are you sure you have the CORRECT end of the scope pointed toward the sky? On a reflector type telescope that uses mirrors, the focuser is on the side of the tube on the UP end of the telescope. The mirror is in the bottom.

Mose caps simply pop off, others unscrew. You may be trying to remove the BOTTOM mirror!

You will not find a manual for those small reflector telescopes. However they all assemble and are used in the same way.

Meade maintains a web site with all of there assembly and use manuals. Look under the 4.5 inch REFLECTOR header for one similar to your telescope.

By the way this is a REFLECTOR with a mirror in the bottom. of the telescope. The FOCUSER end is pointed UP. Read my tips on my profile page.

Here is the link to the Meade manuals--
http://www.meade.com/manuals/index.html

I answered your question already-- TURN THE SCOPE around you have it mounted backwards! The eyepiece end is pointed UP. Like the picture above in your question.

THE protective cover is the FRONT of the telescope!!!

The focuser is on the front like the picture above. TURN the scope around -- you have it pointing at the ground right now!

Read my TIPS on my profile page. And read this and look at the pictures:
http://www.texasastro.org/telescope.php

That is a REFLECTOR style telescope. Just go to Meade's web site and download a REFLECTOR manual that is similar to your telescope. They all work the same way.

http://www.meade.com/manuals/index.html