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January 17, 2007

An unexpected Saturn


Subject: saturn

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Hi all,

On Jan. 10 after a cloudy period with light rain lasting since 4 days
and 4 nights (!!!) I had a quite unexpected clearing around local
midnight when I was going to bed. Fortunately, I noticed my thermo
falling down to 9°C (it was parked at 13°C for several days) and I
decided to go out.

Quite poor transparency due to the heavily wet air (it stopped raining a
few hours before) and thin cirrus. Seeing mediocre at the start and
reasonable around 2 AM.

I must confess I wasn’t expecting such results!
Find here an RGB image:

I took this in 2×2 binning mode and 200% resampled through the Iris’
Drizzle command. No particular activity noticed at this longitude.

After that, I tried to use the unbinned mode taking away the IR blocking
filter and using the R filter by alone. The poor transparency caused a
weak and noisy signal, so I averaged the best 4 streams I could capture
within half an hour. No WOS detected in any stream, so I could do this
with no problem.

I was amazed in having had such a result:

The color layer is coming from the RGB image as above.
Can’t wait for a good seeing!





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