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JMI 12.5" NGT Telescope



  • Model: NGT12-5
  • Manufactured by: JMI


JMI 12.5" NGT Telescope

  • Open truss Newtonian
  • Split-ring equatorial mount
  • Rotating nose assembly
  • Built-in azimuth adjusting plate for easier polar alignment
  • Compact size
  • Fast one-man assembly
  • Removable ring assembly allows greater disassembly with the largest component weighing 40 lb.
  • Sidereal, Lunar, Solar and King tracking rates with both Northern and Southern hemisphere operation
  • Dual control drive corrector with 0.3x / 0.5x / 2x / 4x / 8x / 16x correction
  • NGC-microMAX Computer digital setting circles
  • CCD autoguider compatible
  • Battery and AC power
  • Adjustable focal point
  • Snap-fit Serrurier truss rods
  • JMI's celebrated quality construction


Type:  Newtonian reflector
Mount:  Equatorial split-ring
Mirror:  12.5" f/4.5 Nova Optical Systems 2" thick Pyrex diffraction-limited enhanced primary (96% reflectivity) 2.6" diagonal enhanced secondary
Power:  12vDC operation with included adapters or optional battery pack
Weight:  approximately 120 lb., the heaviest single component is 40 lb.
Height:  64" assembled, 31" collapsed, Eyepiece height 59" at Zenith
Width:  26"
Depth:  29"
Finder:  9x50 straight through

Standard Equipment

Rotating Nose Assembly for comfortable viewing of any part of the sky.
EV-2n Focuser.
Extension Tube for 2" Focuser.
25mm 1.25" Plössl Eyepiece.
9x50 Finder Scope (straight-through) with dovetail mount.
Piggy-Back Camera Mount for piggy-back photography.
Off-Axis Counterweight for attaching to the piggy-back camera mount (2).
Serrurier Truss Rods snap fit into heat treated, spring steel cavities.
Adjustable Focal Point including three different nose assembly mounting positions for visual and photographic work.
Sliding Counterweights positioned along the truss rods for fine tuning the balance (3).
Split-Ring Equatorial Drive with 26" drive ring.
3-Point Large-Cup Flotation Mirror Cell.
Primary Mirror Dust Cover.
Integrated Optical Encoders for use with a "MAX" computer.
NGC-microMAX Computer digital setting circles with a 245-object database.
Drive Corrector with dual axis control, 0.3x / 0.5x / 2x / 4x / 8x / 16x correction, North/south hemisphere operation and CCD autoguider interface
AC or DC Power with 110vAC/60Hz or 220vAC/50Hz (specify) wall transformer or 12vDC cigarette lighter adapter.
Built-In Lifting Handle permits easy transportation.
Latitude Adjustment with scale for fine adjustment of latitude setting.   Adjusts from 30º to 58º
The Telescope ships in a crate approximately 34" x 34" x 37".

Manufacturer Info

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