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Home > Classifieds > Astromart Classifieds > Filters > Classified #95170

Wanted: looking for focus extension tube for ST 80

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I'm looking for a threaded black tube 1.25". This needs to thread into the focuser on my short tube 80 to extend the distance between the focuser and the eyepiece. It should be threaded on both ends, or a tube about 4" long with a set screw on one end would work. I have a Takahashi tube that's the right size but the tread pitch on the Tak is not the same. The ST80 has coarse threading (fewer threads per inch). If you have one or know where to find one please let me know. Thanks!

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