Etalons Lunt LS80T-Ha and DSII - focal length

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pupak
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Etalons Lunt LS80T-Ha and DSII - focal length

Post by pupak »

Focal length of the collimation and correction lens for the Lunt LS80T-Ha and DSII standard.
Does anyone know the focal values of these lenses?


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Re: Etalons Lunt LS80T-Ha and DSII - focal length

Post by george9 »

I don't know the actual numbers, other than that it is designed for working at f/7 and works well in my f/7 AP155, so they can't be too far from that. (So somewhere around 7*52 for the primary and somewhere around 7*35 for the DSII.) I guess someone would have to disassemble to get the actual numbers, but that would break the seal and introduce dust.

George


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Re: Etalons Lunt LS80T-Ha and DSII - focal length

Post by pupak »

I got pretty much the same results using a different method. Thank you very much for the confirmation.


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