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Thread: Link to transmission in eyepieces.

  1. #1
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    Default Link to transmission in eyepieces.



    I don't know if this list of transmission in eyepieces has been shown here before on this specific forum. Anyway; just to be sure:

    A m a t e u r a s t r o n o m i e . c o m/T i p s

    500 Nm comes closest to our night-vision (510).
    550 Nm comes closest to daylight-vision.
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  3. #2
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    Default Re: Link to transmission in eyepieces.

    Hello John,

    and thanks for the link.
    This link is a compilation by Mark Ludes, I have somehow lost the link to the more comprehensive Greek Forum original.

    Best,

    JG
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    Default Re: Link to transmission in eyepieces.

    Hello all,

    I have finally found a Microssoft Word copy of the transmissivity survey of eyepieces, as measured by Konrad Horn Optical, and a part of which has been later compiled by Mark Ludes,
    https://www.google.com/url?sa=t&rct=...aE8r94NhWRkn7Z
    The second group of the tables shows the measurement results for the blue/violet wavelengths down to the ultraviolet 350nm.

    The transmissivity values in the Mark Ludes' compilation begin at 450nm.

    The eyepiece transmissivity is critical in the spectral range 500nm down to 434nm (OIII doublet through H-Beta down to H-Gamma) not only for the nebulae, but also for the galaxies.

    Here is also a link to the Pentax XW transmissivities, Pentax+ / smc PENTAX XO smc PENTAX XW

    Best,

    JG
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    Default Re: Link to transmission in eyepieces.

    Thanks, more good data is always better.

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    Default Re: Link to transmission in eyepieces.

    Thanks John and JG!
    j.gardavsky and John Baars like this.

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