Tele Vue NPC4054 NP101 4in,5.4 Refractor Telescope
Tele Vue (New Up-dated) NP101 4" f/5.4 Refractor Telescope (Ivory tube) NPF-4056
SKU: TVNP101 MFR: NPF-4056
What's Included
What's Included With This Item:
- custom-fitted case, screw-on lens cover, sliding dew/glare shield, 2" everbrite, 1 1/4" adapter.
Why Adorama?
Need help? Call 800-223-2500 / 212-741-0052
The successor to the Tele Vue-101 - The NP-101 (Nagler-Petzval) is more compact with the same 4-element, 540mm, f/5.4 specifications. This scope is 4" shorter and feature both optical and mechanical enhancements over the previous model.
Ivory color powder-coated aluminum tube, black anodized lens housing, focuser assembly and mounting ring.
- custom-fitted case, screw-on lens cover, sliding dew/glare shield, 2" everbrite, 1 1/4" adapter.
| Telescope type |
4-element apochromat refractor using special dispersion glasses |
| Clear aperture |
101mm (4 inches) |
| Aperture gain |
208 (compared to a 7mm exit pupil) |
| Focal length |
540mm (21.3 inches) |
| Focal ratio |
f/5.4 |
| Resolution (visual) |
1.1 arc-sec (Dawes limit for a 4" aperture) |
| Resolution (photo) |
260 line pairs per mm |
| Field (35mm film) |
2.5 degrees by 3.8 degrees (4.5 degrees diagonal) |
| Image scale |
2.7 degrees per inch |
| Magnification |
10x to over 250x using Tele Vue eyepieces and Barlows |
| Star diagonal |
2 inch, "everbrite" mirror type, with 1-1/4" inch adapter, both with brass clamp rings. |
| Focuser |
2 inch, rack and pinion type with brass clamp ring. |
| Finder |
Optional Starbeam or 55mm Plossl for 10x, 4.9 degree field |
| Mounting |
Adjustable mounting ring with 1/4-20 tapped holes for standard (heavy-duty) photographic tripods or optional Tele Vue mounting systems |
| Weight |
10 lbs. O.T.A. |
| Length |
29", 26" O.T.A. |
