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Installing a M48 Filter

Aug 4, 2025 by WO Team

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Applicable to MOST of the telescopes with M48 Camera Thread ( Except for certain optical factors )
  • Cat 51 V1.5~WIFD
  • Cat 61 WIFD
  • Cat 71 all versions
  • Cat 91 WIFD
  • Pleiades 111
  • Pleiades 181
  1. Lock the Rotator
 
  1. Take off the M48 adapter
 
  1. Lock the filter ( male thread ) inside the M48 adapter ( female thread )
  • It is recommended to apply some lubricating oil on the threads first to avoid being permanently tightened.
 
  1. Put the adapter back

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