Detailed Product Description

The optical system in this version consists of two matched 130 mm dia lenses together giving a power of 9D. This enables a relatively larger Field of View (130mm) despite the higher power. It may be noted that with the Increased Magnification Attachment one can get a power of 10D, but the Field of View gets restricted to only 40 mm. Double Magnification Version is recommended where increased magnification is required, but where the duration of viewing is limited. Whereas, for continuous, long duration viewing it is advisable to use the other models.