Skip to content

UPS Shipping Delays / COVID-19 Response Statement

William Optics Adjustable Flat61 for Z61 - P-FLAT61A


William Optics Adjustable Flat61 for Z61

Obtaining the best image when taking photographs of the night sky can be a tricky task. There are fantastic telescopes that make this task a little easier, and William Optics has privided a way to take this aid one step further. This William Optics Flat61 Field Flattener is specifically made for the Zenithstar 61 telescopes. They provide a flat field, an image circle of 43mm, for those who wish to participate in astrophotography.

The Flat61 threads onto the M54 Thread on the focuser of the Zenithstar 61 and has a M48 thread on the camera side.

Please Note : In order to attach a specific DSLR camera to the the field flattener, a camera specific M48 T Mount is required. These are sold separately.


  • Back Focus: 55mm
  • Maximum Spacing: 12.9mm
  • Camera Side Connection: Male M48
  • Weight: 0.27kg (0.59lbs)