Kowa TSN-SS1 7mm Digiscoping Extension Ring Brand_Vanguard It is available with either

It is available with either a second focal plane BDC 600 IR

Advanced MultiGuard® fully multicoated optics for improved light transmission

Exit pupil - 7-1

Close focus - 15 feet

Kowa TSN-SS1 7mm Digiscoping Extension Ring Brand_Vanguard It is available with eitherThe Kowa TSN SS1 7mm Digiscoping Extension Ring extends the outer tube of the Kowa TSN DA1 and TSN DA10 Compact Digital Camera Adapters for Digiscoping, and the Kowa TSN VA3 High Resolution Video Digiscoping Adapter by approximately 7mm. This extension ring allows you to use these adapters; which are usually design for Kowa 88mm and 77mm scopes, with the Kowa TE 14WD 30x Wide Spotting Scope Eyepiece or the Kowa TE 17HD 25x Long Eye Relief Spotting