Astronomy Specialist

FINE TUNING SPACER RING M48 3mm

$39.00

Quantity
- +

 

This 3mm extension ring is useful for achieving the correct back focus required for astrophotography, where a few millimetres are critical.

The extension ring has an M48 x 0.75 male thread on one side and an M48 x 0.75 female thread on the other side. The optical thickness is 3mm.

 

 

Thread
M48 x 0.75 (2" filter thread)
Length of female thread 2.5 mm
Length of male thread 2.5 mm
Optical thickness 3 mm (without male thread)
Outer diameter 50.9 mm
SKU AX-M48-EXT3
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