RebelPPC wrote:

> John Oliver wrote:
>
>> a) The International Astronomical Union decided in 1982 to define all
>> planetary longitudes to increase in the direction opposite to the
>> planet's rotation
>
>
> Okay John, I can see that but lets take another example.... Two people own
> lx200's, one in central time zone USA and another in Pakistan. Standard GMT
> offset for the person in Central Daylight Savings Time USA is -5 and
> Standard GMT offset for the person in Pakistan is +5. If Meade goes by the
> International Astronomical Union offset meaning the scope in the Central
> Daylight Savings Time USA would be set to +5 offset instead of the standard
> GMT offset of -5 then what would the scope in Pakistan (which has a standard
> GMT offset of +5) be set to? Both scopes (Central USA and Pakistan) can't
> have their offsets set to the same.....
>
> Regards
> FLag
> 8" f/10 LX-200 #845198
> 36:10:32.754 N
> 82:43:31.098 W

Since Pakistan is in the direction of the Earth's rotation from the
Greenwich meridian, they are at -5.

The real problem is that there are two opposite definitions that can be
used. In my copy of the LX-200 manual, Meade is quite explicit (table
at bottom of page 20) about what they want but everybody "knows" that
you use minus for US time zones and that is what is shown at various web
sites (like the USNO) so they enter a minus zone and get all messed up.
If they would read their equipment documentation they would have
(perhaps) fewer problems.

--
John Oliver

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