[Atmob-discuss] TONIGHT: Bright star 22 Scorpius to be occulted Apr17

[Mike Mattei]

Hi Pete

This sounds like a good event to observe but what you did not indicate is
that if you want to send info to IOTA then the timings have to be to 1
second and the observer has to know the difference in UT time and their
location time, just going out and observing is a good idea but to do
observing for a scientific value time and location are important.

It is not that simple if you want to report the event.

IOTA has all of the information on their web site
http://www.lunar-occultations.com/iota/iotandx.htm check them out for all
the info you need but hurry there is little time left.

 
Mike Mattei



-----Original Message-----
From: atmob-discuss-bounces at atmob.org
[mailto:atmob-discuss-bounces at atmob.org] On Behalf Of Peter Bealo
Sent: Wednesday, April 16, 2008 6:14 PM
To: Atmob-discuss at atmob.org
Subject: [Atmob-discuss] TONIGHT: Bright star 22 Scorpius to be occulted
Apr17

This event is tonight, and its even clear! Give it a shot. I will.
Peter



> Early on Thurs. April 17, the bright star ( 4.8mag) 22 Scorpius, only
> 1.2
deg.
> due north of Antares, will be occulted by asteroid 1988 EB. This 34 km
diameter
> asteroid will cause 22 Sco to drop to 17 mag for about 1.7 sec. along
> the occultation central line.
>
> The location of 1988 EB is not well known. The predicted occultation
> zone crosses New Jersey and Pennsylvania, not New England. However,
> the 1 sigma

> uncertainty limits of its location are broad, all of MA, CT and some
> of NH
fall
> within this limit. 1 sigma means there is ~ 66% chance that the
occultation will
> occur somewhere between these lines, so it may even occur far north or
south of
> us...
>
> This should be an easy occultation to observe, and reported
> observations
can
> help narrow the uncertainty of 1988 EB's location considerably. 22 Sco
> is
fairly
> bright and pretty easy to find. The event can be observed with
> binoculars
- it
> doesn't take a huge light bucket, and finding it should be easy. I'll
> be videoing the event with a simple B&W camera on an 80mm scope.
>
> If seen here, the occultation will occur at approximately 1:54 AM EDT
> on
April
> 17. It would be wise to observe for several minutes before and after
> this
time.
>
> IOTA, the International Occultation Timing Organization, collects data
> and
helps
> coordinate observers for occultation events. So far, 4 observers are
signed up
> to observe and report this event.
>
> Can we get another dozen observers out and help reduce these error
> bars,
and
> maybe even be one of the few to actually observe the occultation??
>
> If interested, contact me through ATMoB discuss or directly at
> pbealo at comcast.net . I'm no expert at occultations - but this looks
> easy
enough!
> I have some star field plots and projected occultation path maps I can
email
> folks. We can coordinate exactly where all participants are and send
> in
one
> group report.
>
> Peter Bealo
> Sweet Hill Observatory
> Plaistow, NH
>
>
> Sometimes you eat the penguin, other times the penguin eats you!


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