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Adding DSLR lenses to Starry Night Pro

I want to add DLSR lenses to my equipment list so I can model the FOV through my DSLR for each lens.  Adding the actual DLSR is easy but I am a bit confused about adding the lenses.  When entering a telescope I enter the aperture and the focal ratio and it automatically computes the focal length.  What should I do with DSLR lenses?  For example, the Rokinon 14mm f 2.8.  Should I just enter the aperture as 14mm and the focal ratio as 1 as that will spit out the focal length as 14mm?


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    Keiron Smith Official comment

    There is no facility to add DSLR lenses to SN right now.

    The assumption is that you’re using it with a telescope, not just standalone with a lens.
    That said, it’s a decent feature request and something we can look into and, so, appropriately, we have moved this post to the Starry Night 7 Feature Requests forum.
    Thanks so much for your feedback!
  • 0
    Tim Campbell

    The focal ratio (in this case 2.8) is the ratio of the lens focal length divided by the widest possible clear aperture diameter.  

    In other words 14 ÷ ? = 2.8.  

    You can turn that around and just do 14 ÷ 2.8 = 5

    Your lens has a 5mm aperture diameter (at f/2.8).

    Of course, it would be nice if we could enter just opt to enter the focal ratio instead of the diameter.  

  • 0
    Keiron Smith

    Thanks, Tim!

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