In combination with spotting scopes and the Leica eyepiece, the Extender 1.8x enables a previously unheard 90-fold magnification. With this unprecedented expansion of the zoom range, wildlife, nature and astronomical observations as well as digiscoping become an even greater pleasure. An integrated, automatic lock on the bayonet connector allows quick and easy attachment of the Extender 1.8x between the spotting scope and eyepiece. The rubber-armed functional elements and comfortable eyecup provide excellent grip and pleasant viewing conditions. Handling of the eyepiece remains precise even when wearing gloves. Only to be used with angled spotting scopes.

Exceptional performance, wide-angle eyepiece with a long 20mm eye relief and waterproof body.

• Designed for use with PENTAX spotting scopes and telescopes with astronomical telescopes with appropriate 1 1/4" or 2" focusers
• Weatherproof construction for greater durability
• Features high-grade Lanthanum glass with high refraction and low dispersion
• Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance
• Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch

Exceptional performance, wide-angle eyepiece with a long 20mm eye relief and waterproof body.

• Designed for use with PENTAX spotting scopes and with astronomical telescopes with appropriate 1 1/4" or 2" focusers
• Weatherproof construction for greater durability
• Features high-grade Lanthanum glass with high refraction and low dispersion
• Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance
• Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch

Exceptional performance, wide-angle eyepiece with a long 20mm eye relief and waterproof body.

• Designed for use with PENTAX spotting scopes and with astronomical telescopes with appropriate 1 1/4" or 2" focusers
• Weatherproof construction for greater durability
• Features high-grade Lanthanum glass with high refraction and low dispersion
• Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance
• Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch

Exceptional performance, wide-angle eyepiece with a long 20mm eye relief and waterproof body.

• Designed for use with PENTAX spotting scopes and with astronomical telescopes with appropriate 1 1/4" or 2" focusers
• Weatherproof construction for greater durability
• Features high-grade Lanthanum glass with high refraction and low dispersion
• Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance
• Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch

Exceptional performance, wide-angle eyepiece with a long 20mm eye relief and waterproof body.

• Designed for use with PENTAX spotting scopes and with astronomical telescopes with appropriate 1 1/4" or 2" focusers
• Weatherproof construction for greater durability
• Features high-grade Lanthanum glass with high refraction and low dispersion
• Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance
• Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch

Exceptional performance, wide-angle eyepiece with a long 20mm eye relief and waterproof body.

• Designed for use with PENTAX spotting scopes and with astronomical telescopes with appropriate 1 1/4" or 2" focusers
• Weatherproof construction for greater durability
• Features high-grade Lanthanum glass with high refraction and low dispersion
• Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance
• Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch

The Kowa TSN-EX16 increases the magnification of the current Kowa System S spotting scopes by 1.6x when combined with the original eye-piece.