BT Technologies

1602 Northeast 205th Terrace
Miami, FL 33179
Tel: (305) 652-3115
Fax: (305) 770-4390

Hours:

Monday - Friday
9:00 - 5:00

 

   

 

Takahashi FS-78

 

The FS-78 outperforms larger conventional refractors. The diffraction-limited apochromatic optics produce crisp, high contrast images free of secondary color over the entire field of view. Seven internal baffles enhance the contrast and produce a very dark background. It is highly portable and can be taken to remote sites or on solar eclipse expeditions.

The Standard mount for the FS-78 is the EM-2, a highly accurate and portable mount. A standard illuminated reticule, calculator reticule, and polar axis level make it a simple matter to polar align within 2 arc minutes of the celestial pole on level or tilted terrain very quickly. The optional EM-10 mount adds dual axis motor control as well as 50x sidereal set motion.

 

Our Price Optical Tube Assembly: No Longer in Production

Price As Shown: No Longer in production.
Product # TSS7823

 


 

SPECIFICATIONS for the FS-128 (Tube assembly only)

Optical System Fluorite Apochromat Doublet
Coating Front Full-Multi-Coated
Aperture
 78mm
Focal Length 6300mm
Focal Ratio F/8 - F/6 w/ reducer
Light Grasp 124x
Resolving Power 1.50"
Limiting Magnitude 11.2
Image Circle Ø42mm w/reducer
Photo Field 3.9° w/reducer
Tube Diameter 95mm
Tube Length 7366mm
Weight 2.6kg (5.7lbs)
Finder Scope 6x30 8°

 

FS-78 System Chart


1. Main tube
2. Focuser unit
3. Focuser
4. Clamp, focuser
5. Knob, focuser
6. Camera angle adjuster
13. 2" sleeve
14. Coupling (S)
18. Reducer
24. Diagonal Prism (L)
29. 5-turret w/ DP(L)
30. CA35
31. TSC Prime focus ring
32. T-mount
34. 35mm SLR camera
36. TCA-4 camera adapter
38. ø52mm filter
41. Aux ring
43. Mamiya M645 camera
45. Coupling DP(L)
46. Adapter, 1.25" oculars
47. Oculars (1.25")
48. Oculars (2")
49. Diagonal prism (M)
70. Adapter (2" ocular)
71. Extension tube (2")
75. CCD camera
80. 2" sleeve (easy guider)
81. Easy guider (Lumicon)