ZWO M54M M54F 21 Extension Adapter (ZWO-M54-21)

ZWO M54M M54F 21 Extension Adapter (ZWO-M54-21)This adapter allows conversion from female M54 to female M54 with 21mm spacing. Specifications M54 Male Thread to M54 Female Thread 21mm Long

25" eyepieces as well as binoviewers

Compare with the moon & Skyglow filter before the naked eye

Freedom Find™

so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect

for indoor use only) 100V ~ 240V (included

105mm (from the base of the M54x0

Choose fore WIDER prominences with a little surface or MORE surface contrast (Chromosphere) and narrower prominences

even during short exposure times

Version QFocuser（Standard Version） QFocuser（High Precision Version） Body Size/mm About 43*39*50 About 43*39*50 (excluding the button） Weight About 210g About 265g Motor Reducing motor Non-reducing motor Backlash It has some backlash

the user will still be protected

Photographically

all without making the eyepiece too large