The GS 665 range is designed for people who desire the optimum balance between size/weight and overall optical performance. With a finished weight of 1,053g, the GS 665 GA ED/45 offers a lightweight scope coupled with a relatively large objective lens and provides a brighter and sharper image than would normally be expected, even when viewing at magnifications over 30x.
The relatively low focal length to aperture ratios mean the GS 665 range are an excellent choice for combining viewing and digi-scoping with the HDF T 18xWW, 25xWW and 16-48x Zoom eyepieces.
Key features include:
Nitrogen gas filled waterproof construction for 100% waterproofing
Lightweight construction: from just 1,053g
Superior light transmission derived from the 66.5mm objective lens
High quality fully multi-coated optical system with ED (extra low dispersion glass) element objective lens
Centrally positioned rubber focusing wheel to allow easy access for both left and right handed users
Full body natural rubber armouring with integrated rubber objective lens cap
Built-in 9:1 ratio fine focus adjustment for greater focusong accuracy at higher magnification settings
Centrally positioned rubber covered focusing wheel to allow easy access for both right and left handed users
Large footprint tripod sleeve with -/+ 90 degrees each-way rotation and 45 degree incemental 'stops'
Retractable lens hood
Fully compatible with Opticron SDL, HDF and HR Eyepieces and Telephotoadapters
30 year guarantee
Opticron Product Code: 40963
OG Diameter: 66.5mm
Minimum Focus: 3.8m