FreeLists / az-observing / [AZ-Observing] Re: Asteroid Occultation

["Randy Peterson" <rgpeterson@xxxxxxx>]

Your point is a valid one for astronomical twilight.  An 11th magnitude star
will be difficult to find, even though the time of the occultation is AFTER
nautical twilight, which will help.  Guess having an LX-200, Nexstar, or
finding the field in advance will be somewhat critical.

I must point out that there are a number of observers that will be observing
this event in California, which will be even MORE in twilight than us.
David Dunham will be one of these California observers  (see March ASTRONOMY
magazine for article about him).

Randy


----- Original Message ----- 
From: "Thad Robosson" <starstarcracker@xxxxxxxxx>
To: <az-observing@xxxxxxxxxxxxx>
Sent: Monday, February 16, 2004 11:22 PM
Subject: [AZ-Observing] Re: Asteroid Occultation


> >An occultation by the asteroid 409 Aspasia is predicted to pass over
> the Phoenix area next Sunday night (the 22nd) at approximately 7:16 pm
> MST. The star to be >occulted is 11.0 magnitude, the asteroid is 161km
> wide, and the duration of the occultation is up to a lengthy 29 seconds.
>
> Just an educated guess, but isn't it still just a bit light outside at
> that time to be able to find an 11th mag. star?  Twilight ends at 19:43
> that evening.  Sorry
> if I doused any high spirits....I do hope that I'm wrong.
>
> Thad
>
>
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