[sac-forum] Re: --[AZ-Observing]-- Re: Good Seeing Predicted for Tonight
- From: "Spencer, Darrell" <DSpencer@xxxxxxx>
- To: <sac-forum@xxxxxxxxxxxxx>
- Date: Wed, 6 Feb 2008 12:10:26 -0800
Tom, great depictions of our "neighbors". A testament to what can be
done, from a planetary perspective, in our backyards.
Forgive my ignorance. I can, conceptually, grasp the benefits of longer
focal lengths for detailed imaging. But, I cannot visualize the
mechanics of how you're varying FL to this extent on your Newtonian.
Without going into detail, could you refer me to a summary of the
technique - or very briefly describe it?
(I also moved this to the SAC_forum in the interest of keeping technical
explanations off the AZ-Observing list).
Thanks,
Darrell Spencer
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Tom Polakis
Sent: Wednesday, February 06, 2008 11:59 AM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Good Seeing Predicted for Tonight
[<Spencer>] <snip>
The images of Mars was taken using about 10 meters of focal length on my
10" Newtonan, while the Saturn image used 5 meters.
Tom
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