Posted by: T. Boyd | January 25, 2009

My 4.5 inch Newtonian telescope

About 20 years ago I found this 4.5 inch Newtonian telescope at Costco at a resonable price ($200 range).  I mainly wanted to try out the “go-to” feature that is on so many telescopes now.  It has a hand held computer/remote control that helps you locate some thousand objects in the night sky.

The telescope mount has two drive motors which will swing the telescope to the selected star, planet, or nebula, at least it will after you go through the rather tedious procedure for aligning the mount to two or three known stars. And then the object will be tracked automatically as it offsets the motion caused by the earth’s rotation.

The optics of this telescope seem good, except the eye-piece focuser is of poor quality.  The tripod is fairly heavy duty, and the telecope and mount hold the view steady, unlike a lot of telescopes in the $100 or less range which are usually plagued by vibration.

Here is a photo of the telescope.

Setting up to see transit of Venus across the Sun

Setting up to see transit of Venus across the Sun

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