[AZ-Observing] Re: Jupiter Event

I rated the seeing from central Phx as 4/10 at 0320, or what Allan Rahill of
Skyclocks fame calls two bands on Jupiter and that's it. Using a 6" f/8 and
a 10" f/4.5 at 85 and 240X, I didn't see much more than you did in this
"turquoise" seeing, but Ganymede's shadow was very obvious and the "strange
exchange" was entertaining. Finally I switched over to the Moon for some
wavy crater watching.

Jack


Bill Woods proffered:
> 
> 
> Well, I watched Ganymede and Europa do their switch over at 
> 3:21am local
> time this morning using a 3.5" refractor at 160x.  Seeing was 
> poor, 5/10 or
> worse, but Jupiter was clear of the high thin clouds that 
 were covering much
of the sky.  As Ganymede merged into Jupiter's disc about 3:20am, the bump,
which had been getting smaller, suddenly appeared to get bigger which made
it look like Ganymede had reversed directions. In a couple of minutes Europa
separated from the planet and became fully visible.  It was pretty neat and
Ganymede's dot shadow was visible the whole time when seeing settled.
Unfortunately, I could not see the 2 moons separately at the same time
because Ganymede was not visible against Jupiter's bright background.  In
better seeing I have been able distinguish the moons while in transit.
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