The Z4 is a sextuplet astrograph with three pieces of lens at the front and three pieces at the back, and two of them are ED glasses. Just like other series of Sharpstar astrographs, the Z4 is designed as a self-flattened astrograph, so there is no need to calculate the back focus. You just make the target to stay in focus, and the optical system will be perfect for imaging.
The appearance of the Z4 breaks with the previous styles of Sharpstar with its matte gray coating. The light gray lens tube plus dark gray focuser and tube ring (clamp) make the astrograph look calm, but vibrant. The tube ring has a handle at the top, so it is easy to carry and assemble. The handle is designed as a slot on which you can mount a finder base, etc.
The Z4 uses a large 3.4” focuser with a 1:10 fine adjustment knob and a 360° rotator for easy focusing and angle adjustment. It has M82, M68, M54, M48 adapters, and the M48 one has an internal thread that can fit 2” filters. And a 300mm Vixen-style dovetail plate, makes it easier to balance on the equatorial mount.
SPECIFICATIONS
WHAT'S IN THE BOX
All our products come with a satisfaction guaranteed, no-questions-asked full refund policy for a full 30 days.
We use Priority FedEx premium or DPD Express shipping for all orders, and the product is packaged with an additional biodegradable cushion lining in the box.
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