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More Information  · Supplied Accessories  · Recommended Accessories  · Images of Some Features Price $3,895.00 List Price $5,300.00 Highest Useful Magnification 216x Visual Limiting Magnitude 12.5 Focal Length 540mm Focal Ratio f/5.4 Resolution 1.15 arc seconds Aperture 4" Net Weight 11.3 lbs. Heaviest Single Component 9 lbs. Warranty 5 years Lowest Useful Magnification 15x

• 101mm f/5.4 four-element Nagler-Petzval apochromatic optical system
• 2" rack and pinion focuser with 2" accessory adapter
• 2" Everbrite dielectric star diagonal with 1.25" eyepiece adapter
• retractable dew shield
• fitted hard case
• state-of-the-art visual and imaging capabilities
• 5-year warranty

The TeleVue NP-101 refractor is TeleVue's closest approach yet to the holy grail of the "perfect" portable multi-purpose photo/visual telescope. The NP-101 has snap-to-focus sharpness across even the widest true fields, and rich lunar and planetary contrast that will take your breath away. Its quality, easy set-up, and airline portability beckons your use . . . in your backyard or on the far side of the world.

TeleVue first reinterpreted the incredible design flexibility of the Petzval portrait lens into an astronomical objective over 20 years ago. They’ve been refining the design ever since. No other optical design affords the same freedom to simultaneously correct for coma, astigmatism, field curvature, secondary spectrum, spherical aberration, and spherochromatism that the Nagler-Petzval design provides.

This four-element air-spaced Nagler-Petzval system has a 101mm aperture ED doublet at the front of the scope, with a second field-flattening/aberration-correcting ED doublet within the barrel at the rear. The artful combination of materials and design gives the TeleVue NP-101 diffraction-limited performance into the furthest reaches of the visual spectrum.

For visual use, the scope’s 540mm focal length is long enough, using a 1.25" TeleVue 2.5mm Nagler eyepiece, to provide 216x for high magnification observations of the Moon, planets, and binary stars; yet it will also produce a huge 4.7° field at 17.4x, using a 2" TeleVue 31mm Nagler eyepiece, for wide field observing.

Whether you are interested in nature observing on earth, exploring the visual riches inside the solar system or deep in space, or to photography on land in the night sky, simply put an eyepiece in the NP-101, or attach a camera, and the NP101 is ready to satisfy you right out of its case.

This Telescope’s Optical and Mechanical Systems . . .

• Nagler-Petzval apochromatic refractor optics: 4" (101mm) aperture, 540mm focal length, f/5.4 apochromatic four-element air-spaced optical system. ED (Extra-low Dispersion) glass elements in both the front and rear doublets of the system provide images that are free from spurious color and other optical aberrations.

• Multicoated optics: Fully coated on all surfaces with multiple layers of antireflection materials for high light transmission and good contrast.

• 2" rack and pinion focuser: The very precise and smooth focuser has a 2" non-marring brass clamp ring with two lock knobs to hold a 2" star diagonal or other visual accessories firmly in place.

• 2" Everbrite star diagonal: The supplied 2" Everbrite mirror star diagonal has ion-deposited dielectric coatings for a very high 99% reflectivity. A non-marring brass clamp ring with two lock knobs hold 2" eyepieces firmly in place.

• 1.25" accessory adapter: The supplied 1.25" accessory adapter can be used in directly in the 2" focuser drawtube to hold 1.25" visual and photographic accessories. It can also be used in the 2" Everbrite diagonal to allow the use of 1.25" eyepieces in the 2" diagonal. A non-marring brass clamp ring hold 1.25" eyepieces and accessories firmly in place.

• Sliding captive dew shield: Slows the formation of dew on the lens to extend your undisturbed observing time. Also improves visual and photographic contrast by shielding the lens from off-axis ambient light (the neighbor’s yard light, moonlight, etc.) For transport, the retractable lens shade keeps the overall length of the optical tube to a manageable 26.1" without diagonal when it is retracted. A thread-in protective metal dust cover is standard.

• Mounting ring: The underside of the supplied ring mount has three 1/4"-20 mounting holes for direct installation of the NP-101 on a TeleVue Panoramic altazimuth mount (good performance) or a TeleVue Gibraltar altazimuth mount (better performance). They also allow you to connect the NP-101 to an appropriate optional dovetail plate for mounting the scope on an equatorial mount. A batwing handle unlocks the split mounting ring to allow the 9 pound scope to be slid fore and aft within the ring to balance it under different equipment loads.

• Finderscope mounting point: No finderscope is supplied. However, dovetail accessory mounting slots for a finderscope and other accessories (such as a piggyback camera mount) are provided on top of the scope’s ring mount.

• Carrying case: A custom foam-fitted locking hard shell case is standard. An optional soft case for airline travel is also available.