| NOTE: THIS ITEM CANNOT BE SHIPPED STORE PICKUP ONLY SELECT PICK UP AT CHECKOUT |
SHIPPING NOT AVAILABLE - In Store Only
This is an older NP101 (not the current NP101is). It is in good condition with clean optics. See the photos. The TV Everbrite diagonal is also in great, clean condition.
The previous owner unfortunately jury-rigged a finder dovetail and tapped a new screw hole into the top of the Clamshell as pictured.
This also includes a Tele Vue focus motor, the Focusmaster. Great for astrophotography or visual observing with the controller box where you don't want to induce vibrations/shaking into the system.
NOTE: The scope does not fit into the case with the focus motor attached unless you modify the foam.
This includes:
- Tele Vue NP101 Refractor
-
The Tele Vue Clamshell ring. The previous owner jury-rigged a dovetail and tapped a new screw hole into the top of the clamp.
- TeleVue Everbrite 2" diagonal, with box, no caps (a $394 value)
- 2" to 1.25" adapter (older, no compression ring)
- TeleVue Focusmaster (a $240 value)
- Original hard case
We do not have the shipping boxes for this, so this is available for in-store pickup only.
Note: The below description may reflect features of the NP101IS that do not apply to this NP101 instrument.
Televue was determined to make the NP series optically, mechanically, and functionally as perfect as possible.
The NP101 (540mm, f/5.4, 4") maintains its optical specifications yet with redesigned 4-element optical systems.
Next, to take full advantage of the larger lenses, they developed a larger focuser and draw tube having a 3" front aperture and 2.4" rear aperture. This eliminates any restriction of the larger diameter converging light cone. Tele Vue build and test the rack and pinion focuser to hold 12 lbs. of weight, yet still permit extremely fine focusing control via a 10:1 dual speed pinion assembly. This new draw tube also permits quick change from visual to imaging operation and allows full camera rotation without focus change. In addition, it has the capability to correct for any residual focal plane tilt and accepts a "position stop" for our digital micrometer to allow repeatable focus measurement to 0.0001".
To maintain squareness to the optical axis while changing camera orientation, the draw tube has three lock screws that tighten against a taper on the "imaging insert" ring. This insert is threaded to accept Tele Vue's new Imaging System accessories including large diameter extension tubes, optical accessories, and camera and CCD attachments, all with mating threads.
The Focusmate 10:1 planetary ball type reduction focuser provides extremely sensitive focus adjustment, measurable with the optional Digital Micrometer Kit to better than 1/10,000". Also, the optional Focusmate Driver permits electronic motor control of the focusing process. The Focusmate Driver has direction push-buttons and adjustable speed. A tap on the button permits vibration-free focusing in steps as small as approximately 0.0005".
Tele Vue has been known for producing visual instruments "even better than you imagined." We aim to achieve the same with our imaging equipment. Our dedicated local machinists and in-house staff are as committed as ever to deliver on these quality and performance goals.
| Type | APO (Nagler-Petzval) Refractor (Elements/Groups: 4/2) |
| Objective (mm) | 101 |
| Focal Length (mm) | 540 |
| Focal Ratio (f/#) | 5.4 |
| Length OTA (inch) | 25.5 |
| Length with diagonal (inch) | 28.5 |
| Weight OTA/Std. Config (lbs) | 10.7 / 10.7 |
| Drawtube/Focuser | 2.4-inch, Focusmate dual-speed rack/pinion |
| Maximum Visual Field (deg.) | 4.9 (with 2-inch 55mm Plössl) |
| Maximum Recommended Power (x) |
250 |