Antares AZ4 Alt-Azimuth Mount for Porro Prism Binoculars - No Tripod - AZ4-PPPO 10X Binoculars The William Optics GT81 Triplet

The William Optics GT81 Triplet Refractor has a focal length of 478 mm and an f/ratio of f/5

Tracking Mode: Dual Axes Tracking

Features of the Upclose G2 7-21x40 Binocular by Celestron:

we recommend the B1800 or B3400 blocking filter for a wider field of view to support your camera

5 Limiting Magnitude: 12

Antares AZ4 Alt-Azimuth Mount for Porro Prism Binoculars - No Tripod - AZ4-PPPO 10X Binoculars The William Optics GT81 TripletAntares AZ4 Alt Azimuth Mount for Porro Prism style binoculars. This model comes without a tripod just in case you have your own with a 3 8 16" thread. The Antares AZ4 mount is based on the 511AZ. It is easy to use, offers up a smooth ride with Teflon & Delrin bearings, and provides shake free views. Especially great for longer observing sessions or binocular astronomy. Binoculars over 5 pounds will need an extra weight, which is sold separately.