Vintage Tele Vue 13mm Nagler Original Type 2"/1.25" Plossl 25" Tele Vue Barlow

25" Tele Vue Barlow

66") (46% of aperture diameter) Light Gathering Power (Compared to human eye) 843x Resolution (Rayleigh) 0

05") with included eyepiece Eye Relief 20mm (

the peak quantum efficiency of ASI585MC Air is 91%

The Celestron RS-232 Cable connects your computerized telescope to a laptop or PC for control via various planetarium software programs

Vintage Tele Vue 13mm Nagler Original Type 2"/1.25" Plossl 25" Tele Vue BarlowThis is a used original 13mm TeleVue Nagler. This has long since been superseded by the new Type 6 Naglers. The type 6 complete description is below, and is not completely applicable to this particular eyepiece. If you're looking for the eyepiece that revolutionized widefield astronomy, look no further here it is. It is in excellent condition: the optics are clear, and the barrel is lightly marked near the top: see the photos. However, it does not