Nikon NAV-17HW Telescope Eyepiece

【Price Reduced (3/30, 3rd Time)】
This is a Nikon eyepiece for astronomical telescopes.

This is an early production model purchased shortly after its release (October 2010).
It has been used only a few times. The lens part has no noticeable dirt,
but there is some dirt on the exterior metal parts.

・Brand: Nikon
・Model: NAV-17HW
・Focal Length (mm): 17
・Apparent Field of View (degrees): 102
・Eye Relief (mm): 16
・Mounting Size: Φ50.8
・Weight (g): 990 (main unit only)
・Accessories: Cap, Holder (Original box, instruction manual, etc. are not included)
・Notes 1
New models currently on sale come standard with the dedicated converter EiC-H14 which changes the focal length to 14mm,
but this was not available at the time of purchase.
However, it can be purchased separately as a commercial product.
(Reference: ¥16,500 on Nikon Direct)
・Notes 2
While this product is known for its ultra-wide field of view, it is a very large and heavy eyepiece,
so handle with care. Please ensure it is securely fastened to prevent it from falling out of the eyepiece sleeve.

Thank you for looking.