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Take a look at the July issue of Astronomy. They have an article devoted
to observing Mars -plus info on filters.

Bob G.

> We finally had a wonderfully clear and stable sky last night so I went out
> > to check Mars out plus get a feel for my new NGF-S.
> >
> > Problem was, Mars was just too bright for any detail to be seen. Just a
> > big bright ball in the eye piece. So, not knowing squat about filters, I
>am
> > ready to be educated assuming there is a filter for such a thing as I know
> > there are such filters for Moon viewing. BTW, Last month's viewing of
> > Jupiter could have been a little more detailed if I could have had a way
>to
> > cut down on the luminance of Jupiter.
> >
> > Are there filters for planetary viewing which cut back on the alluminance
> > emitted by the planet. Or will your basic Moon filter work for high
> > alluminance planets? Not ever using or seen a telescope filter in use,
> > where and how do these filters attach.
> >
> > Regards
> > FLag
> > 8" f/10 LX-200 #845198
> > 36:10:32.754 N
> > 82:43:31.098 W
> >
> >

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