|NTT-40 Product Information
- Open truss Newtonian
- Folded optics for more convenient eyepiece
- Alt-azimuth mount
- Compact size
- Trailer mounted
- 18-point Roller-Edge mirror cell
- Vixen SkySensor 2000 PC "Go-To" computer
- Battery and AC operation
- Adjustable focal point
- Massive 2" declination ball bearings
- 28" Drive Gears and Clutches on
- JMI's celebrated quality construction
Folded Newtonian Reflector
Mount: Alt-azimuth on a four-wheel trailer
Mirror: 40" f/4 primary, 14.5" flat secondary, 7"
(minor axis) diagonal
Power: 12v DC, 500 mA operation with 17 amp-hr gel-cell batteries or adapter
Weight: approximately 2500 lb.
Height: 12' at Zenith
Eyepiece Height: 8' (Zenith) to 68" (Horizontal)
Fork 46", Trailer 80"
Finder: 9x50 (or larger) straight through and a Telrad
JMI NGF-XT Focuser with Motor for motorized focusing.
Extension Tube for 3" Focuser.
22mm 2" Panoptic Eyepiece.
9x50 (or larger) Finder Scope (straight-through) with dovetail mount.
Telrad Finder Scope
Serrurier Truss Rods.
Adjustable Focal Point. A movable folding flat gives a wide range
of back focus adjustment. One inch of movement of the secondary flat gives
two inches of movement in the focal plane.
Removable Counterweights attach to the tub or nose assembly for fine
tuning the balance (6).
Alt-Azimuth Drive with 28" gears.
18-Point Roller-Edge Mirror Cell.
40" Mirror. A precision annealed
4" thick Pyrex
diffraction-limited primary mirror. Sital is optional.
Primary Mirror Dust Cover.
Vixen SkySensor 2000 PC "Go-To" Computer with a 14,942 object
database serial port.
Battery or AC Power with 12vDC 17 amp-hr rechargeable gel-cell batteries and 110vAC/60Hz or 220vAC/50Hz (specify)
Telescope prices are for the standard telescope configuration. Upgrades
and Options are at additional cost. The listed price also does not
include any delivery charges (crating and shipping and
handling). Please call for a delivery quote.
is required with all telescope orders (5%
Telescopes are custom-built based on the options selected by the
customer and therefore require time to build. The
remaining amount due must be paid before the telescope is