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TOPIC: Finderscopes


L

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RE: Finderscopes
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 Telescope Basics 6 (of 6): Finderscopes, types, and alignment


Credit eyesontheskyDOTcom



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L

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Finder Scope
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9x50 Orion Illuminated Finder Scope with Bracket

This is the unboxing of the 9x50 Illuminated Finder Scope with Bracket from Orion Telescopes & Binoculars.



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L

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DIY right angled finderscope
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One problem with straight finderscopes is that the eyepiece is sometimes placed in a awkward position, when viewing objects high in the sky.
A small tip to make viewing through a straight finderscope a bit easier, is to retrofit a cheap/surplus 0.965" star diagonal (mirror or prism) to the end, and turn it into a right angled finderscope.
The diagonal may have to be modified by removing (sawing off) its barrel to allow for a wider field of view. The diagonal can fit snugly into the end of a common 6 x 30 finderscope (and secured by the diagonal locking screw).
The image produced will be still be upright but with a reversed left and right orientation.



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L

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Finderscopes
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FINDER1.jpg

A Finderscope is a small auxiliary telescope mounted atop the main astronomical telescope and pointed in the same direction. The finderscope usually has a much smaller magnification than the main telescope can provide and therefore can see more of the sky. This helps in locating the desired astronomical object in the night sky. Some finderscopes have crosshairs to mark exactly where the main telescope is looking.
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L

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A finder scope is a little telescope that mounts on your main telescope.

Today, we cover red-dot and Telrad finders. These devices, also called unit-power finders because they don't magnify an image, are much more intuitive for beginners and in many cases much easier to use. Especially in dark sky.
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