Shelyak Alpy DSLR Barlow Element
This Shelyak Barlow Element for the Alpy 600 Spectrograph increases back focus while broadening the spectrum. Normally used with Digital SLR cameras, this Barlow element provides a back focus range of 44.7 mm to 55.2 mm when used with a standard M42x0.75 camera adapter. Shelyak Product Number: SE0128 Please Note: Stated pricing of this accessory requires concurrent purchase of one of Shelyak’s larger systems. Please contact OPT if you are interested in stand-alone pricing.