All-metal structure and anodized aluminum process, durable, can be used for a long time.
Use this extension tube to obtain the correct image scale or the exact spacing required for reducing tubes or field flatteners.
The extension tube has T2 internal and T2 external threads and is used to solve spacing problems in astrophotography and eliminates a range of focusing problems.
The required spacing can be achieved by combining several extenders of different lengths.
Type: Astronomical telescope T2 thread extension tube Extension tube Extension tube
Height: 3mm/ 5mm/ 7mm/ 10mm/ 12mm/ 15mm/ 20mm/ 30mm External thread: M42*0.75mm
Internal thread: M42*0.75mm
Outer diameter: 1.73 inches /44 mm
Color: Black
The package includes:
1 x extension tube
Due to different production batches, the surface of two paint colors (matte black; Bright black) shipped randomly.
Please note:
Allow an error of 0-2mm due to manual measurement. Make sure you don't mind before you bid.
Due to differences between different monitors, the picture may not reflect the actual color of the item. Thank you!
If you really care about these details, don't order.