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TEC APO 140 Owner's Manual page 10

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FOCUSING DIAGRAM
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"
With the Field Flattener focusing tube is in the middle position
Unvignetted field dia. ~2.4"
9
7,0"
BACK FOCUS
2,5"
110.
camera depth 85.0mm

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