Space Forum / Amateur Astronomy / November 2006

Seeing conditions weren't too bad on the morning of the 29th. This is
my second RGB attempt at Saturn using my new scope...
http://www.digitalsky.org.uk/saturn/Saturn-2006-11-29_04h35m-04h40m-final.jpg

If this question could be answered, it might straighten out some confusion
for me.
Let's say the sun vanishes instantly.  We wouldn't go dark until 8 minutes
later. However, what happens to the earth's orbit? Would it also take 8

Amazon.com just delivered to me a copy of "The Urban Astronomer's Guide" by
one Rod Mollise.
At first look, it appears to be a useful piece of work.
Does this guy really know what he's talking about?  :-)

Hello to all.
I'm a struggling amateur trying to get to grips with collimating my
Skywatcher 130P (focal length 650).
I've had the scope for about six months now and had a go at collimating

I have graduated from doing astrophotography with a Canon 20D to doing
it with an SBIG STL-11000M. Having "graduated," I find myself back in
kindergarten.
Here <http://www.davidillig.com/ast-stl-firstlight061125.shtml> is the

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If the sun warms the Earth too dangerously, the time may come to
draw the shade. The "shade" would be a layer of pollution
deliberately spewed into the atmosphere to help cool the
planet. This over-the-top idea comes from prominent scientists,

While observing from a dark site in central Pennsylvania on Tuesday
night, my observing buddy and I noticed what we first took to be an
auroral glow in the southeast at approximately 6:30 p.m. EST (23:30
UT).  It was a green or blue-green amorphous glow with a brighter

Friday night was first light for "Iron SnowFlake" -- a new name for a
new telescope (12" LightBridge).
Among the objects targetted was my old friend, Comet SWAN.  The comet
was observed at low, medium, and high magnifications from a magnitude

quoting from wikipedia (Apparent Magnitude article)
"a first magnitude star is about 2.512 times as bright
as a second magnitude star".
Does this effectively means that in a photo, the radius

Greetings everybody!
There're a couple of issues with the fields of
the Tycho Catalogue I'd need some help with...
I'm looking at the searchable data available through this page

Here's some practical advice.  During daylight hours enlist a friend to
hold a confectioners powdered sugar coated doughnut against a cooperating
neighbor's exterior house wall which you painted flat black.  This kindly
neighbor should live between 300 and 400 feet from your scope ...

If I go somewhere darker than my light-polluted home and take my
telescope, and I can see 1.5 magnitudes fainter there with the naked
eye than at home, should I expect an equal improvement with the
telescope? Does it work that way?

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Is there a user by that name reading this newsgroup? If so please contact
me, I got your DVD today and nothing shows up so I have no idea what's on
it. All I see writen is WZ Only.