William Optics Adjustable Flatteners for ZenithStar 61/73 (P-FLAT)

William Optics Adjustable Flatteners for ZenithStar 61/73 (P-FLAT)These Adjustable Flatteners are made for use with the ZenithStar 61 or ZenithStar 73 telescope. It features a 45mm image circle for use with sensors as large as full frame, while also retaining your ZenithStar's native focal length! On the back, it features an M48 thread for attaching nearly any camera. If you're using a DSLR or Mirrorless camera, make sure you purchase an M48 wide t ring for your camera's lens mount (sold separately). Specifications

connected with the astrographs

Celestron’s EdgeHD reducers features a custom 4-element optical design engineered to maintain the flat-field performance of our award-winning EdgeHD optical system

Use the Fine-Tuning 1/4” Mounting Element at one side and a ball head at the other side

You can therefore rely totally on the function of your spotting scope

just try R filter for moon photography

Sky-Watcher

25" barrel and eyepiece holder makes it compatible with the most popular size focusers

This wall mount battery charger is for iOptron AZ Mount Pro mount

Featured astronauts include Canadians Chris Hadfield and Julie Payette — the only Canadian woman to visit the ISS

exclude counterweight Mount weight 13

ASI290MM Mini and ASI120MM Mini

every mirror is optically inspected under conditions far more critical than a diagonal mirror is ever used in typical telescopes