1. Easy to install, perfect replacement for the old or damaged one, reliable to use.
2. Made of aluminum alloy, wear- and not easy to damage.
3. Using fine workmanship CNC technology, the accuracy is higher and durable.
4. The specification of the interface female thread is M42x0.75mm, the specification of male thread is M42x0.75mm.
5. Various sizes 3mm/5mm/7mm/10mm/12mm/15mm/20mm/30mm are suitable for different .
Specification:
Item Type: Lens Extension Tubes
Material: aluminium alloy.
Colour: black.
Product size: about 3mm/0.12inch, 5mm/0.20inch, 7mm/0.28inch, 10mm/0.39inch, 15mm/0.59inch, 20mm/0.79inch, 30mm/1.18inch, 0.472 1.2 cm/0.47 inches.
Application: Expand the distance of the primary mirror of the astronomical telescope
Extinguishing Treatment: Internal with extinguishing wire
Specification of female interface thread: M42x0.75mm
Specification of Male Interface Thread: M42x0.75mm
How to use:
1. Remove the lens from the lens.
2. Connect the telephoto tube to the eyepiece and lens.
3. Then connect the lens of the objective.
Packing List:
1 x 3mm Extension Tube
1 x 5mm Extension Tube
1 x 7mm Extension Tube
1 x 10mm Extension Tube
1 x 12mm Extension Tube
1 x 15mm Extension Tube
1 x 20mm Extension Tube
1 x 30mm Extension Tube
Note:
1. Please allow 1-2 inch error due to manual measurement. Thank you for your understanding.
2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.