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THE WIDESCREEN CENTER
Tele Vue NP101is Imaging/Visual APO Refractor Telescope

Tele Vue NP101is Imaging/Visual APO Refractor Telescope

Product code: NPI-4055
Manufacturer: TeleVue
£3799.00
The NP101 (540mm, f/5.4, 4") maintains its optical specifications yet with redesigned 4-element optical systems. Larger rear lens groups absolutely minimize vignetting in formats up to 50mm diagonal. For these large chips an optional field corrector was developed so the corners of the newly brightened edges would virtually be as perfect as the center of the field.

In order to take full advantage of the larger lenses, a non-vignetting focuser was developed to prevent any restriction of the larger converging light cone. The draw tube has a 3" front aperture and 2.4" rear aperture. 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 four 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.

Accessories (optional) - see pictures below
B. LMK-2404/LMF-2405 Digital Indicator Kits for Large Focuser
C. DSF-8002 2" Everbrite Star Diagonal
D. FDU-2003 Focusmate Driver electronic vari-speed motor control.
E. LCL-1069 Large Field Corrector for optimized edge performance on NP101is and NP127is (for big chip sizes)
F. NPR-1073 0.8X reducer
G. AFT-1105 48mm Filter adapter
H. AD2-1110 Apogee U47 D2/Yankee Robtic adpter
I. AD7-1111 Apogee U9000/U16 D7/D9 adapter
J. STL-1071 SBIG STL series adapter
K. TRG-1072 Standard T-Ring adapter
L. CWT-2070 Canon Wide T adapter
M. A2A-1107 2" Accessory adapter
N. TLX-1108 SCT Type Threaded Filter Housing adapter
O. TLA-0250 0.25" long threaded extension
P. TLB-0375 0.375" long threaded extension
Q. TLC-0500 0.500" long threaded extension
R. TLD-1000 1.000" long threaded extension
S. NPE-1118 1.5x Extender for NPis Scopes

Focuser Features
A. Large Focuser for NP101is and NP127is Standard features (A) include:
  • Drawtube with 3" entrance aperture, 2.4" exit aperture
  • End-ring with tilt capability
  • 4 lock knobs to secure camera equipment or 2" adapter
  • Body has brass clamp ring with 2 lock knobs
  • Focusmate 6:1 dual speed focuser
  • Indexed 2" accessory adapter with brass clamp ring
  • Imaging insert threaded for imaging system components
Click here for NP101is Component Recommendations (Adobe PDF) for prime-focus imaging with various style cameras



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