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Fisher Space Pen’s Sealed Pressurized Ink Cartridge performs in temperatures from -30º F to +250º F, underwater, in zero gravity, at any angle - ev...

Whether you’re in the field filling out a tag for that once-in-a-lifetime trophy or marking off your checklist of the never-ending chores that need...

Stars which are eight times or more massive than our Sun end their lives in a most spectacular way; they go supernova. A supernova is the most powe...

To achieve true dynamic balance with a fork-mounted SCT, both top and bottom weights are required. See stock number CWCPC925-CS for the complete to...

Use with focuser FTF3015B-A Known To Fit Celestron C11/CPC11, C14/C14 Edge HD telescopes Thread on Entry (OTA | FRONT) Side of Draw Tube 3.29x16tpi...

This is the top half of the Celestron 9.25" SCT counterweight set. Use this if you already have a bottom slidebar kit from Celestron or Losmandy. I...

Note that this version of the counterweight set will not work with the CPC-925 telescopeTo achieve true dynamic balance with a fork-mounted SCT, bo...

Vixen's newer refractors have a fine-focus mechanism that is attached to the existing focuser pinion by a thin metal plate. This plate is a weak po...

Adjustable 108mm guidescope ring set. Fits Losmandy V Series dovetail plates.

Use this female T-thread to male T-thread spacer to extend standard T-thread adapters to achieve the correct backfocus for your telescope. Availabl...

Best-selling star chart, ideal for beginning astronomers!These charts are the perfect way to learn the stars and constellations. Simply rotate the ...

Author: Robert Michael PylePaperback: 280 pagesThis essential handbook covers where to find butterflies; how to observe and photograph them; their ...

In manufacturing, it is not often that a design becomes instantly classic or iconic. It takes a lot of time, appreciation by its peers, and a trac...