Contains:  Gear
Backfocus corrections using M48 extension tubes, AndyM274

Backfocus corrections using M48 extension tubes

Backfocus corrections using M48 extension tubes, AndyM274

Backfocus corrections using M48 extension tubes

Description

Since replacing my Altair Astro filter holder/drawer with a Pegasus 7 position filter wheel I've experienced tilt & backspace issues.
Backspace seems to be (almost) perfect now,  just to eliminate the tilt...

Comments

Histogram

Backfocus corrections using M48 extension tubes, AndyM274