[AZ-Observing] Re: Double stars for seeing test

Steve,

I think the lists you want are available at:
ftp://ftp.lowell.edu/pub/bas/seeing.vis
and ftp://ftp.lowell.edu/pub/bas/dbls.fil

However, in reality, most amateurs use the Pickering scale to judge seeing.
In the interests of consistency I use:
http://uk.geocities.com/dpeach_78/pickering.htm which shows an animation of
the various levels and allows folks to work from the same reference point.

Regards

Bill Wood


-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx]On Behalf Of Steve Coe
Sent: Tuesday, June 24, 2003 4:52 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Double stars for seeing test


Brian, et al;

I think what I need is a little more scientific approach to this discussion
of seeing.  I have only used a small sampling of stars for seeing tests:
Double-double in Lyra, Gamma Leo and one or two others that I can't remember
right now.

I know that a list was posted some time ago, and I think Brian was nice
enough to do that work, it included a list of a dozen or so double stars
that pass overhead and have a variety of separations.

Seeing as how my new Nexstar 11 will find stuff quickly and accurately, it
would be pretty easy to view these doubles at a consistent power (300?) and
keep notes on how well divided they are.

So, my question is:  does someone still have that list in electronic form?
I need as a minimum, star designation, RA and Dec, magnitudes and
separation.  Maybe some info on whether or not the stars are moving rapidly
in their orbits.

Thanks;
Steve Coe

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