![background image](/i/tec/155357/tec-apo160fl/h/tec-apo160fl-010.png)
9
110.
7,0" BACK FOCUS
Focusing tube is completely "IN"
Unvignetted field dia. ~1.0"
Focusing tube is completely "OUT"
Unvignetted field dia. ~1.6"
3" long extension tube is required
for straight through viewing
4,5" FOCUS TRAVEL
With the 2" diagonal focusing tube is in the middle position
Unvignetted field dia. ~1.4"
2,5"
FOCUSING DIAGRAM
The focuser end of every model of TEC telescopes is the same and shown below: