The Televue 3mm - 6mm Nagler Click-Stop Zoom has a 1.25" barrel size to fit 1.25" focusers, adapters, diagonals or accessories. With 3, 4, 5, and 6mm settings, it's like having four Nagler eyepieces in one! This is a great planetary and double star eyepiece for those who do not wear eyeglasses. The ability to zoom up and down in magnification power allows the user to adjust the magnification depending on the seeing conditions. The Nagler zoom has 10mm of eye relief and a great 50º apparent field of view. Get every last little bit of magnifying power out of your telescope the atmosphere will permit! The Televue 3mm - 6mm Nagler Click-Stop Zoom features full multi-coating, blackened lens edges, fold-down eyeguard, rubber grip-ring, safety undercut, anti-reflection threads and filter threads.
|Eyepiece Focal Length||3 mm - 6 mm click stop zoom|
|Insert Tube Size||Standard 1.25"|
|Apparent Field Of View||50 degrees|
|Field Stop||2.6mm - 5.1 mm|
|Eye Relief||10 mm|
|Number of Elements||Unk|
|Best Use||Planets and double stars. This is an adjustable high powered eyepiece|