SC-4

Discussion in 'Guiding and Adaptive Optics - StarChaser and AO' started by ndmartin747, Feb 1, 2026.

  1. ndmartin747

    ndmartin747 Cyanogen Customer

    Joined:
    Dec 30, 2020
    Messages:
    15
    I have a SC-4 fit question. My optical train is CDK 12.5 - AC4040 - FW7 - SC3 long - AO X. I am considering upgrading to an SC4. Will an SC4 be a parfocal drop in, or do I need to add a spacer? Thank you.
     
    ndmartin747, Feb 1, 2026
    #1
  2. Doug

    Doug Staff Member

    Joined:
    Sep 25, 2014
    Messages:
    10,801
    The SC-3 and SC-4 are the same thickness.
     
    Doug, Feb 1, 2026
    #2

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