Vintage Tele Vue 13mm Nagler Original Type 2"/1.25" Plossl it has the telephone jack

it has the telephone jack instead

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

The Celestron single-axis motor drive runs on a 9V battery

which aren’t as accurate as LISA technology

25" Tele Vue Barlow

Vintage Tele Vue 13mm Nagler Original Type 2"/1.25" Plossl it has the telephone jackThis 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 This has long since been superseded by the new Type 6 Naglers.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