5
INSTRUCTIONS FOR TELESCOPE MODELS 5TN / 49TN / 45T / 54TN
1. Remove tripod (N) from box.
2. Stand tripod and spread legs.
3. Remove telescope main body (I) from the box. Unscrew mounting bolt (B) from telescope base
(5TN/49TN/45T) or remove from the box (54TN). Place telescope onto tripod mount (Fig. 1).
Insert bolt through tripod mount (Fig. 1c) and tighten securely.
4. Remove the finderscope (Fig. 1a) from the box. Place the finderscope (H) in the finderscope
bracket (G) and secure with three finderscope bracket set screws.
5. Model 5TN/49TN/45T: Insert diagonal into the focus tube (Fig. 4m). Secure by tightening small
retaining screws.
6. Model 5TN/49TN/45T: Use the micro-altitude adjusting knob (Fig. 1d) and the azimuth adjusting
knob (Fig. 1e) in the tripod mount to move the telescope as desired.
NOTE: Diagonal is only to be used in combination with the eyepieces (oculars).
7. Model 5TN/49TN/45T: Insert eyepiece (Fig. 4k) into diagonal (Fig. 4m). Secure by tightening
small retaining screw.
NOTE (5TN/49TN/45T): In all astronomical telescopes, the image appears upside down. With
the use of the diagonal the image appears erect but with a left to right inversion (mirror like).
To use the telescope for terrestrial viewing and to correct the mirrored image, remove the
diagonal and replace with the erecting eyepiece (Fig 6).
8. To obtain focus on model 54TN, push or pull the focusing tube (D) until the image is sharp
(Fig. 2).
The telescope is now fully assembled and ready for use.
TECHNICAL SPECIFICATIONS
5TN
49TN/45T
54TN
Objective Diameter
50mm (1.96”)
50mm (1.96”)
40mm (1.57”)
Focal Length
600mm
600mm
n/a
Eye Lenses
H 12.5mm
18mm (35x Land)
H 12.5mm
18mm (35x Land)
Fixed
Erecting Eyepiece
35X
35X
n/a
Maximum
Magnification
50X
50X
40X
Accessories
Diagonal Mirror,
2X Finderscope
Diagonal Mirror,
2X Finderscope,
2X Barlow
2X Finderscope
EYE LENS CHART & THEORETICAL POWER LIMITS
5TN
49TN/45T
54TN
12.5mm Eye Lens
Power
50X
50X
40X
18mm Eye Lens
Power
35X
35X
n/a
CAUTION: Viewing the sun can cause permanent eye damage. Do not view the sun with
this product or even with the naked eye.