ARCO 2" is the new low profile ARC second resolution rOtator that, thanks to its incredible resolution of 1 arc second per step, is the most precise camera rotator and field de-rotator! The 2” version of ARCO has a thickness of only 20mm and a free aperture of 50.8mm. When used together with an equatorially mounted telescope, ARCO allows you to rotate the camera without the need to touch the telescope. 

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