ETX125 With Red Dot finder arrangement, IThe

There is a battery inside the red dot finder-- replace it with a new one. Usually the on off switch is on the side of the red dot finder.

This is a simple red dot finder. First check the battery inside the finder-- and replace it.

If it still does not work you can buy a new one here:

http://www.telescope.com/control/accessories/telescope-finder-scopes

Many on-line retailers sell these-- here are two:

http://agenaastro.com/optical-accessories/finder-scopes/red-dot-unity-1x-finders.html?SID=mabkh7sllc66d40c2bapar09r0

http://www.telescope.com/control/telescope-finder-scopes

You mean for the red dot finder? Your telescope itself does NOT use batteries.

Most of these use a small "watch" battery available at either Wal Mart (in the watch department) or at a place like OfficeMax. They are not hard to find.

Undo the red dot finder or remove the battery and take it with you to get a replacement.

You mean the red dot finder?

Put and object in the center of the eyepiece. Can be top of telesphone pole, a distant church steeple---

Without moving the main telescope, adjust the red dot in the finder to match the object in the main eypiece.

Can you return the red dot finder? It's apparently broken.

These can be purchased (not too very expensive)
here:

http://www.telescope.com/control/category/~category_id=finder_scopes

Mine SLIDES off ----------

Simple-- you can also do this during the day on an object at least 100 yards away-- but at night; get the moon centered in the eyepiece and without moving the telescope center the red dot on the moon. This will get you almost aligned-- then put a bright star in the eyepiece and readjust the red dot to center the star.

Astronomical telescopes show all objects upside down and reversed-- this is not a problem; there is no up or down in space.

The red dot finder helps you point the telescope-- focus on a distant object and center it in the eyepiece.

Without moving the telescope -- adjust the red dot onto the object. Now you can use the finder to locate objects.

I had this problem too. You need to go into the "red dot finder" menu each time and just go into each option and confirm the blink intensity, etc. After I do this, it turns on.