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Re: [OM] Interesting Telescope Accessory

Subject: Re: [OM] Interesting Telescope Accessory
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Thu, 11 Sep 2014 19:28:21 -0400
Thanks. I didn't know such were available. I can remember the first time I tried to focus my Celestron 8 on a squirrel about 50 feet away. Pretty much impossible.

But an extension tube does not control distortion. It only allows the lens to move farther away from the camera and maintain focus on objects closer than the lens was originally designed for.

I looked up your reference # on ebay and see that's exactly what you're talking about here for telescopes. An extension tube would move the eyepiece further from the body of the scope and allow focusing on objects closer than the scope was designed for.

Chuck Norcutt


On 9/11/2014 5:34 PM, Chris Trask wrote:
Until a few minutes ago, I did not know that there were extension
tubes available for telescopes.  The subject was brought up on a
small telescope interest group.  Everyone here should understand the
value of extension tubes for distortion-free macro photography.  I
found what seems to be e nicely made one (anodized aluminum body with
brass compression ring and filter threads) for 1.25" eyepieces on
eBay (#360535388304) for less than $20, and bought one for the
upcoming viewing season.


Chris

When the going gets weird, the weird turn pro - Hunter S. Thompson

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