Re: [APML] drift alignment

["Bobby Middleton" <bobm@koyote.com>]

Thanks Matt. I looked up Dave's posts you linked to. Sounds like good
advice. Dave knows his stuff.
Bobby Middleton

http://www.koyote.com/users/bobm/astro1.htm

----- Original Message -----
From: Matt BenDaniel <matt@starmatt.com>

>
> Bobby,
>
> You should always watch the drift in DEC.
>
> The APML archives contain postings by Dave Rowe to the effect that you
should not use a drift star near the East or West horizon (on the celestial
equator). He suggests using a star at 40N or so, at right angles to the
meridian. The reason for this is to avoid movement due to differential
atmospheric refraction.
>
> See
> http://astro.umsystem.edu/apml/ARCHIVES/MAR01/msg00948.html
> http://astro.umsystem.edu/apml/ARCHIVES/APR99/msg00649.html
>
> Matt
> --
> Matt BenDaniel
> http://starmatt.com
>
>
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