TEC APO 140 - Focusing Diagram; Focusing Tube Positions

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"
camera depth 85.0mm
With the Field Flattener focusing tube is in the middle position
Unvignetted field dia. ~2.4"
2,5"
9
FOCUSING DIAGRAM