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Halve the f-stop of your telescope for shorter exposures
About the Celestron Cheshire Collimation Eyepiece - 1
you can power and control the focus motor from your computer's USB port
5 Amp output
The Calcium K modules line is centered at 393
William Optics M48 Nikon F T-Ring - Black - TM-NK-F-M48 threedaysale Halve the f-stop of yourWilliam Optics 48 mm T Ring for Nikon F Cameras Use this aluminum black anodized T ring to attach your Nikon F camera body to an imaging accessory, etc. with M48 threads.
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