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Re: [ATM] RE:Refractors

Richard F.L.R. Snashall wrote:

>
> Looking for more, I generated:
>
>      R           t           G
>   1210          20           Schott N-BK7/BK7       -or-
>                              Xinhu/Chengdu H-K9L    -or-
>                              Hoya BSC7              -or-
>                              Hikari E-BK7           -or-
>                              Ohara S-BSL7           -or-
>                              Sumita BK7
>  -1210          12.5         Schott F5/F5HT         -or-
>                              Xinhu/Chengdu F1/H-F1  -or-
>                              Hikari E-F5/F5         -or-
>                              Ohara S-TIM5           -or-
>                              Sumita F5
>    inf

Oops... missed Hoya E-F5/F5 for the flint as well.

In addition, 510635 (Schott BK1 or Sumita BK1 or Xinhu/Chengdu
H-K5 or Ohara BSL1 or Hoya BSC1) may be used with a radius of
1170 mm.  This glass is actually closer to the line than BK7
is, but may not enjoy the cost benefits of being as popular a
glass.
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