FW8G-Aluma

Discussion in 'Filter Wheels' started by Jason Handel, Jan 16, 2019.

  1. Jason Handel

    Jason Handel Standard User

    Joined:
    Dec 21, 2018
    Messages:
    11
    The product description indicates that the optics involved in this filter wheel have a built in focal reducer to allow for a larger FOV. I haven't gotten to the point of setting up and guiding yet, but I am anticipating that I may need to know the amount of 'focal reduction' so that auto-guiding software understands what the new effective focal length of the entire system will be. Am I thinking about this correctly ?

    Is the amount of focal reduction for this equipment available ?
     
  2. Doug

    Doug Staff Member

    Joined:
    Sep 25, 2014
    Messages:
    6,054
    It’s approximately o.6X IIRC.

    Typically the software figures out the movement rates using a simple calibration step. You shouldn’t need this information to operate the guider.
     

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