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Shelyak Alpy Barlow Lens for Alpy 600 Spectroscope
This dedicated Barlow lens is the essential component for connecting a DSLR or a camera with a long backfocus requirement to the Shelyak Alpy 600 spectroscope. It solves the critical problem of insufficient backfocus, extending the focal plane to meet the standard spacing of DSLRs with T-rings and astronomy cameras equipped with filter wheels. By screwing directly onto the rear of the Alpy 600, it makes it possible to achieve a sharp, focused spectrum with imaging systems that would otherwise be incompatible.
The Essential Adapter for DSLR Spectroscopy with Alpy 600
The standard Alpy 600 has a very short backfocus distance, designed for compact, dedicated astronomy cameras. This Barlow lens modifies the optical path to significantly increase that distance, specifically to accommodate the deeper sensor position found in DSLR and mirrorless cameras. If you want to use your existing digital camera for spectroscopy, this lens is not optional—it is the required adapter to bring your camera to focus.
Accommodating Filter Wheels and Long Imaging Trains
Modern imaging setups often include accessories like filter wheels or off-axis guiders that add considerable length to the imaging train. This Barlow provides the necessary focal extension to accommodate these bulkier configurations. It ensures you can integrate your preferred camera and accessories with the Alpy 600 without being limited by its native backfocus, giving you the flexibility to use your primary imaging rig for scientific analysis.
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What is the purpose of the Shelyak Alpy Barlow Lens?
Its sole purpose is to increase the backfocus of the Shelyak Alpy 600 spectroscope. This allows you to achieve focus with cameras that have a long backfocus distance, such as DSLR cameras or astronomy cameras used with a filter wheel.
Do I need this Barlow to use my Canon or Nikon DSLR with the Alpy 600?
Yes, absolutely. A standard DSLR camera's sensor is located too far from the mounting flange to reach focus on a native Alpy 600. This Barlow lens is required to extend the focal point to where your DSLR sensor can capture a sharp spectrum.
Will this Barlow help if I use a ZWO filter wheel with my camera on the Alpy 600?
Yes. Adding a filter wheel to your imaging train increases the required backfocus beyond what the standard Alpy 600 provides. This Barlow lens provides the necessary additional spacing to bring your camera and filter wheel combination to focus.
How do I install the Alpy Barlow Lens?
Installation is straightforward. The Barlow element is designed to be screwed directly onto the rear of the Alpy 600 unit, where you would normally attach your camera adapter.
Is this Barlow compatible with any other spectroscope?
No, this is a dedicated optical component designed specifically for the Shelyak Alpy 600. It is not a general-purpose Barlow and is not intended for use with other instruments or for visual observation.
Does this Barlow lens change the resolution of the Alpy 600?
As a Barlow lens, it increases the effective focal length of the system. This will change the image scale on your sensor, but it is designed to work with the Alpy 600's native resolution and optical design to produce a usable spectrum with longer backfocus cameras.
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Shelyak 1-Year Warranty
