The T-2 / M42 × 0.75 – 1 mm spacer (PrimaLuceLab, SKU: PL3304201 ) allows for a very precise increase of the back-focus distance by exactly 1 mm in optical paths using the T-2 thread.

Key Features

• optical length 1 mm – back-focus micro-adjustment
• internal and external threads M42 × 0.75 (T-2 standard)
• anodized aluminum ring - lightweight and corrosion resistant

Set components

• spacer ring 1 mm M42 × 0.75 (T-2)

Technical parameters

• internal thread: M42 × 0.75
• external thread: M42 × 0.75
• optical length: 1 mm
• material: anodized aluminum
• EAN: 8059020773533

The PL3304201 ring allows you to correct the missing millimeter of back-focus, which is crucial for achieving optimal image correction in astrophotography.