Function:
1 Easy to install, complete replacement of old or damaged ones, reliable use
2. Made of high quality aluminum alloy that is wear-resistant and not easy to damage.
3 CNC technology with excellent workmanship for precision and durability.
4 The female thread specification of the interface is M42x0.75mm, the thread specification is M42x0.75mm.
5 Various sizes of 3mm / 5mm / 7mm / 10mm / 12mm / 15mm / 20mm / 30mm suitable for different models.
How to use: a> 1 Remove the objective lens.
2. Connect telephoto tube to eyepiece and objective lens
3 Then connect the objective lens.
Specifications:
Item Type: Lens Extension Tube
Material: Aluminum alloy
Color: Black.
Product Size: Approx. 0.12 inches (3 mm) / 0.20 inches (5 mm) / 0.28 inches (7 mm) / 0.39 inches (10 mm) / 0.59 inches (15 mm) / 0.79 inches (20 mm) / 0.79 inches (30 mm) / 1.18 inches (12 mm).
Application: Extends the length of the primary mirror of the astroscope.
Dimming process: internal with extinguishing thread
Interface female thread specification: M42x0.75mm
Interface screw specification: M42x0.75mm
a> Package List: