Hello,

i own a LX200 10" at 6,3 with superwedge and a imaging camera and
computer.

It is difficult for me to make exposures more than 5mn, but my goal is
to make up to 20mn one-shot exposures.
i adapt a 208XT on ETX with T-ring on a piggyback adapter and another
computer.
I am a totally beginner in autoguiding.

So far, i can't autoguide, it seem worse than without, sometimes
pictures are with a drift, sometimes with 2 or 3 erratic shift in any
direction , and this about 10 to 30" on the imaging CCD on 10mn
exposure.

Is it a wrong calibration of 208xt, or a bad choice of guide star, too
dim or too bright, or 208 parameters, or LX200 something....etc...

At your opinion, by what i have to begin and care about.
I know that i am wrong, but i don't where.

Thanks in advance for your help.

Regards

Alain

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