On Mon, 28 Jun 2010 07:40:53 +0200, "Giuseppe N. Gerbore"
wrote:


"Daniel Minge" ha scritto nel messaggio
.. .
I've started looking out for Iridium flares.

I've noticed two things. They don't always flare at the apponted time.
Also their flares appear to be restricted to a certain part of the
sky. Namely in the south east at my location which is Adelaide,
South Australia.

Minge

True.

I always double-check heavens-above.com and callsky.com.
Heavens-above seems to be using more restricting conditions, such as sun
altitude (at least -10 degrees). I estimate a 20% misses.
I noticed that in winter the most frequent flares are SE and NW in summer
(Italy). This might be due to sunset/sunrise time variation.

Giuseppe

I use Orbitron which has a good flares predictor application.

I also see flares which are in the Northern sky.

Merv