William Optics Adjustable 0.8x Reducer / Flattener for FLT91

William Optics  Adjustable 0.8x Reducer / Flattener for FLT91 2" reducer / flattener has been manufactured to optimise the flat-field imaging performance of William Optic telescopes with an aperture ratio between f/6 to f/7.5. Adapter for FLT 91 telescope also included!

Offers excellent illumination and a flat field across 97% of a full frame sensor FOV.

Attaches directly to telescopes with an M63 thread on the end of the focuser.

Internal thread accepts 2"  filters.

For DSLR camera, additional T-adapter is required with M48 thread.

Large Sensor Illumination

• Designed with nearly Full frame chip-size DSLR cameras
• FMC Triplet APO
• Fine quality Ohara optics

• Reducing factor 0.8x.
• Adjustable design, for the perfect back focus 
• 48mm filter thread

• All internal surfaces threaded and blackened to prevent reflections.

Easy to Use

• Suitable for any standard 48mm T-ring for your camera.

Adjustable distance:

• GT71 - 9.1mm
• GT81 - 7.1mm
• Z81 - 5.2mm
• ZS103 - 2.5mm