(meteorobs) Re: Daylight Fireballs

[Alister]

The post did not say whether the light was vertical or horizontal.

Although a sun pillar (vertical) is possible, I've never seen one lasting 
more than an hour or so - the conditions would have to be really ideal.

The most likely halo in this case would be a 'lower tangent arc" to the 22 
degree halo. I have seen these last a huge chunk of the day. Their shape 
changes slightly during the day, depending on solar altitude, becoming 
concave towards the Sun higher in the sky, and away from the Sun lower in 
the sky.

The more you find out about these things, the easier it is to recognize weak 
displays and rare displays that tend to be more subtle.

Good observing,
Alister.
----- Original Message ----- 
From: <YoungBob2 at aol.com>
To: <meteorobs at meteorobs.org>
Sent: Monday, July 25, 2005 1:32 PM
Subject: Re: (meteorobs) Re: Daylight Fireballs


> If it lasted for hours, doesn't sound like a meteor, but since it
> was below the sun maybe it was a sun pillar or sundog of some
> kind.
>
> Bob Young
>
> In a message dated 7/25/2005 1:06:07 PM Eastern Daylight Time,
> epmajden at shaw.ca writes:
>
> <<
> 1)         On Saturday, July 16th, there was this strange long light in 
> the
> sky directly south. It was there for hours mid afternoon, sitting below 
> the
> sun. It slowly moved way up high in the sky  & then down towards the
> horizon, never changing angles or varying in brightness. >>
> ---
> Mailing list meteorobs
> meteorobs at meteorobs.org
> http://lists.meteorobs.org/mailman/listinfo/meteorobs