Reduction ring for female thread M48 to female thread M42. This zero optical length adapter allows the attachment of M42 thread telescopes while maintaining the optical length of the entire astrophotography set, compatible with the camera's back focus.

The most important features

• Zero optical length will not affect the camera's back focus
• perfect for connecting telescopes with M42 thread with intermediate rings and off-axis guides with M48 thread

Technical parameters

• optical length: 0 mm
• physical thikness: 4 mm
• male thread: M48 x 0.75
• female thread: M42 x 0.75

Kit components

• reduction ring M48-M42

Warranty

24 months