Tele-vue NP101is Manuale Utente Scaricare il pdf

32 Elkay Dr., Chester, New York 10918 (845) 469-4551. televue.com

Tele Vue

Visionary

540mm f/5.4 IMAGING SYSTEM

4-ELEMENT APO REFRACTOR

Thank you for purchasing the Tele Vue-NP101is. It has been our pleasure to craft this ﬁne instrument for

you. Thirty years ago Al Nagler took Petzval’s portrait lens concept using widely spaced doublets, and

patented a fast telescope design version for the purpose of testing eyepieces. The 5” f/4 MPT (Multi-

Purpose Telescope) with its fast speed, wide and ﬂat ﬁeld, led to a series of continuous improvements,

primarily in color correction. The “Halley Commemorative,” 4” f/5.5 started the parade where more

advanced glasses including special dispersion, ﬂuorite and ﬂuorite substitute glasses brought steady

improvements. The 4” f/5 Genesis employed ﬂuorite in the rear doublet and the SDF version at f/5.4

and subsequent Tele Vue-101 version brought us closer to perfection. Maintaining the f/5.4 speed while

reducing tube length in a totally new design with new glasses allowed virtually ideal color correction and

improved ﬁeld ﬂatness in this, the ideal form culminating the 30-year reﬁnement toward perfection with

the Nagler-Petzval 101. Al’s “spacewalk” dream from his 1960’s NASA simulator days is yours to live.

Tele Vue’s “is” designation denotes instruments capable of accepting Imaging System photographic

accessories. Tele Vue has designed this series of accessories in conjunction with each optical system

so you are ensured of compatibility and maximum performance. While the NP101is maintains all the

visual prowess of the standard NP101, the larger rear elements and larger focuser along with a host of

proprietary Imaging System accessories, make it ideally suited for the CCD imager.

WARNING: NEVER try to look at the sun or point the telescope toward or near the sun without professional

solar observing equipment rigidly secured in front of the objective lens. When observing the sun with the

proper ﬁlters, remove any ﬁnding devices such as Starbeam from the telescope. Instant and

permanent eye damage may result from viewing the sun directly, even during a solar eclipse,

or when viewing through thin clouds, or when the sun is near the horizon.

Tele Vue

-NP101

Operating Guide

Lens Cap

Optical Tube Assembly

Case

2” Accessory Adapter (left)

Imaging System Adapter (right)

Standard Features - Optical tube assembly includes: captive sliding dew shield, 2.4” focuser with 10:1

Focusmate reduction, tilt adjustment end ring, screw-on metal lens cover, 2” Accessory Adapter, Imaging

System Adapter, custom hard-shell case, Allen Keys for end ring tilt adjustment.

1 2 3 4 5 6 ... 11 12

Sommario

Pagina 1 - Tele Vue

32 Elkay Dr., Chester, New York 10918 (845) 469-4551. televue.comTele Vue®Visionary540mm f/5.4 IMAGING SYSTEM4-ELEMENT APO REFRACTORThank you for p

Pagina 2 - 1.2 Focuser

105.0 ADDITIONAL ACCESSORIES5.1 All Tele Vue telescopes with rack and pinion focusers now permit the photographer to index focus position to within 0.

Pagina 3 - 1.3 Case

117.0 WarrantyTele Vue telescopes are warranted to be free of manufacturing or workmanship defects for 5 (ﬁve) years from the date of purchase, to the

Pagina 4 - 3.2 Finders

Tele Vue recommends choosing low and medium power eyepieces in ratios of ﬁeld stop diameters. For example, factors of 1.4 or 2.0. When choosing higher

Pagina 5

2Getting Acquainted with the Tele Vue-NP101is1.1 Optical tube assemblyThe optical tube consists of an air-spaced doublet in the front cell, which atta

Pagina 6

31.3 CaseWhen opening the case, we recommend always lifting the lid while holding the handle. The lid opens a full 180° and holding the handle will g

Pagina 7 - – 0.080” (2mm) Spacer

4 For Alt-Az mounting, Tele Vue recommends the Gibraltar or Gibraltar5 due to their sturdy legs. You will receive the necessary attachment hardware

Pagina 8

54.0 Photographic Set Up and the Tele Vue Imaging SystemTele Vue Imaging System Accessories provide solid threaded connections between components. To

Pagina 9 - 4.2 Prime Focus

6Focuser FeaturesA. Large Focuser for NP101is and NP127isStandard features (A) include:•Drawtube with 3” entrance aperture, 2.4” exit aperture•End-rin

Pagina 10 - 6.0 Caring for your NP101is

7TRG-1072 – Standard T-ring adapter• This is the most restrictive of adapters as it has the smallest inside diameter. Recommended for use with APS s

Pagina 11

82. Prime focus with 0.8X Reducer for APS and smaller size chips in cameras with 55mm chip to T-Ring distance.4. Prime focus with 35mm format SLRs in

Pagina 12

94.1 Adjustable Position End RingThe tilt of the End Ring to the optical axis can be changed to compensate for any tilt errors you may see in your pho

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