Opticron GS 665 GA

Developed around an all new optical system featuring an objective lens size of 66.5mm with 45° angled viewing, GS Fieldscopes set a new benchmark in affordable lightweight telescopes for birdwatching and general wildlife observation.

'High end' optical performance and value
The GS series takes the range a stage further by increasing the 65mm OG model to a 66.5mm OG model without any noticeable gain in size or weight. As a direct result, the GS 665 gains 5% surface area over a standard 65mm OG. The increase in the amount of light entering the instruments coupled with an all new optical configuration, new prism units and revised multi-coating results in significantly higher levels of optical clarity over preceding models. Images are extremely bright whilst retaining excellent colour saturation so important for accurate identification.

Usability
'Ease of use' and 'functionality' are all important when using an instrument in the field and the GS series is designed to provide class winning optical performance seamlessly in an array of different outdoor conditions. As telescopes need to be used with a solid tripod for image stability, any weight saving is crucially important. Constructed using lightweight materials where at all possible so the GS 665 weighs under 1000g. GS Fieldscopes are protected by 'full body' natural rubber armour with a textured finish to the top half of the main body prism housing. The centrally positioned focusing wheel allows easy access for both right and left handed users and is also rubber covered - delivering a positive feel with or without gloves. The focusing system is designed to allow adjustment from infinity to 50 metres in just a 270° turn. Housed within the same mechanism for convenience is a 9:1 ratio accurate focus adjustment. Having access to full range of different magnification eyepieces is also important. The GS series are fully compatible with Opticron SDL, HDF & HR eyepieces. Designed to enable rotation around the main axis of the instrument for use on a bipod or in a hide with a high window, GS fieldscopes feature a solid die-cast tripod sleeve with -/+ 90 degrees each-way action with 45° incremental 'stops.'

Reliability
Extensively tested for continuous trouble free use in varying temperatures, the models are fully nitrogen gas filled and waterproof.