Extension Tubes

2 inch Extension Tube 50mm

2 inch Extension Tube with 50mm.

2 inch Extension Tube 80mm

2 inch Extension Tube with 80mm.

Vixen Extension Tube R200SS (20mm)

20mm in length 42mm T2-thread and 43mm thread  Weight: 11g (0,39oz)

Vixen Extension Tube 43mm

• 40mm in length

Vixen Extension Tube VC (60 mm)

Vixen VC200L & VMC200L extension sleeve can also be used for the Vixen ED, FL, NA refractors with 60mm connection thread. The extension...

M68 Extension Tube 10mm

M68 Extension Tube 10mm

M68 Extension Tube 20mm

M68 Extension Tube 20mm

M68 Extension Tube 40mm

M68 Extension Tube 40mm

M68 Extension Tube 60mm

M68 Extension Tube 60mm

M68 Extension Tube 80mm

M68 Extension Tube 80mm

M68 Extension Tube 100mm

M68 Extension Tube 100mm

M68 Extension Tube 7.5 mm

M68 Extension Tube 7.5 mm Optical tube length : 7.5 mm Inner Diameter / Clear Aperture : 62 mm Outer Diameter : 76 mm Threaded :...

M68 Spacer Rings 0.3 - 0.5 - 1 mm

M68 spacer rings : 0.3-, 0.5- & 1 mm Optical tube length : 0.3-, 0.5- & 1 mm Inner Diameter / Clear Aperture : M68 Threaded :...

Baader 2 inch ClickLock - Extension 37 mm

Baader 2 "ClickLock 37 mm extension - extending the 2" focuser of all devices to 37 mm. (useful with DSLR camera when it does not come into...

Baader 2 inch ClickLock - Extension 47mm

Baader 2 "ClickLock 47 mm extension - extending the 2" focuser of all devices to 47 mm. (useful with DSLR camera when it does not come into...

[T-2 #25A] T-2(m/f) 15mm Extension Tube

• Extension Tube
• T-2(m/f)/15mm optical length

[T-2 #25B] T-2(f/m) 40mm Extension Tube

• Extension Tube
• T-2(f/m) 40mm optical length

[T-2 #25C] T-2(f/m) 7,5mm Extension Tube

• Extension Tube
• T-2(f/m) 7,5mm optical length

[T-2 #25Y] T-2(f/m) VariLock 29 Extension Tube 20-29mm

• Extension Tube
• 20-29mm optical length

[T-2 #25V] T-2(f/m) VariLock 46 Extension Tube 29-46mm

• Extension Tube
• 29-46mm optical length

[T-2 #33] Variable locking T-2 extension (12 -14mm optical length)

• Variable T-2 extension
• 12-14mm optical length

[T-2 #5] Baader DT-4 1.25" nosepiece extension

There is often a problem with off-axis systems or folding mirror attachments, where the receptacles of normal eyepieces is just 1-2 cm too...