Re: [APML] STV/Efinder focus point

[Michael Barber <barber@sbig.com>]

At 12:36 PM 10/22/01 -0400, you wrote:
>Hello All,
>Last night was my first night out with the Efinder/STV for autoguiding.  I
>originally had the focal reducing lens at the end of the spacer tube with
>both inserted into the approx. 4" long Efinder tube.  Focus was not possible
>with this configuration using Capella.  I played around with various
>configurations and the only one that worked was to place the focal reducing
>lens inside the Efinder tube with the spacer tube attached to the reducer at
>the open end of the Efinder tube.  The focus seemed to be good and the unit
>guided at 1.3 arc seconds of error.  Do I have the reducer lens oriented
>properly?  Thanks for any help you can give me on this.


Yes.  We changed the configuration of the eFinder to allow the spacer tube
to be placed in front of the lens to act as a dew shield.  This change was
made after the last batch of manuals was printed.  The next edition will
correct the drawing.  In the mean time see:

http://www.sbig.com/sbwhtmls/fr237.html

Regards,
Michael Barber
SBIG




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