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Shelyak Alpy Barlow Lens

Price includes VAT, plus delivery

The mechanical backfocus of the Alpy 600 (distance between Alpy 600 and your camera CCD chip) has to be between 10 and 20mm. If you have a camera with a bigger backfocus (it is the case for cameras having a wheel with filter), or wish to use a Digital camera (DSLR), this barlow increases the backfocus to a range of 44.7 to 55.2mm.

The Barlow is installed at the rear end of the ALPY 600 (camera side).


With standard M42x0.75 camera adapter, backfocus range is 44.7-55.2mm.

Browse these categories as well: Spectroscopy, Shelyak