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December 1st 04 12:09 AM
by CLT
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2 |
456 |
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4 |
392 |
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Contrast Vs RayTracing (Telescopes) by
Dr. Mohib. N. Durrani
Hello all,
Can a Raytracing software program also evaluate Contrast on (telescope)
images?
What are the existing softwares that can evaluate Contrast?
How...
( 1 2 3)
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24 |
915 |
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Why no other "Petzval" apos? by
RichA
TeleVue has more or less been the only ones
using this for apos, with the other makers
doing only full size lenses and no sub-diameter
lenses. I think the...
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3 |
461 |
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CG5-GT drives and controllers on a GP? by
Stephen Paul
Anyone got a clue if I can install the CG5-GT motors (and covers) on a Vixen
GP?
The mounts are nearly identical, so I figure I should be...
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2 |
614 |
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0 |
873 |
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Something buzzed Saturn by
Ed
Nice clear skies here so tried hunting down DSOs (towards the
North to avoid the Moon). Few minutes later low cloud starts rolling
in towards the North, so...
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3 |
320 |
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25x100 binoculars: recommendations? by
Sketcher
The time is ripe for me to upgrade my 20 year old, short eye-relief
20x80s in favor of more powerful, larger aperture binoculars with
longer eye-relief.
Orion...
( 1 2)
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15 |
1,358 |
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Venus by
starlord
Got up this AM, moved Babylon 8 to the rear of my trailer and viewed
Jupiter, Venus, even Mars, put the scope back and got back inside to
unfreeze myself, I...
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0 |
406 |
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Problem w/my telescope's images by
Louis
Eye give up, I just can't seem to see a thing. You'd almost think they
forgot to put a primary mirror in the darned scope and put the finder on
backwards...
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1 |
520 |
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Was Apollo seen close to the Moon? by
Steve
N. Foldager wrote:
Hi,
In the seventies, it was announced that one of the Apollo Service
Modules (I don't remember which) would perform a burn in front...
( 1 2)
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17 |
1,202 |
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Well polished optics by
Mayer Duda
Does anyone know of a way to tell if an objective has been polished
well by say looking at a bright star?
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2 |
390 |
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Orion XT8 Modifications by
Mad Dog
I recently purchased an Orion XT8 Dobsonian Reflector which came with
a copy of Orion's very impressive The Sky software.
Being relatively new to astronomy I...
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1 |
1,159 |
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Crato Platerlets by
Mayer Duda
At what magnification should I be able to see the platerlets with
an 80mm F 7.5 refractor?
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3 |
384 |
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MSNBC gives good telescope advice! by
Adam Stephens
Just seen excellent first time telescope buyers advice on this on the MSNBC
web-site.
http://msnbc.msn.com/id/6590620/
Good to see this in the main-stream...
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2 |
623 |
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Buyer Beware! by
Mayer Duda
I have discoverd that the Celestron ED80 is not a good buy. The focuser
is too short a travel to allow prime focus photography unless you can get a
longer...
( 1 2)
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November 30th 04 06:00 AM
by RichA
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10 |
498 |
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Comet Machholtz by
Doink
Greetings
Starry Night Enthusiast is showing Comet Machholtz as a very prominent night
sky object with a dramatic tail. I couldn't even find the thing last...
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November 30th 04 05:20 AM
by Doink
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7 |
553 |
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November 30th 04 04:50 AM
by CLT
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24 |
1,769 |
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Newbie first 'scope by
Capn
Hi all,
We're looking at both the Orion Star Blast and the Orion XT6.
As to criteria that led us to these two units: We've ruled out terrestrial
use, as for...
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5 |
554 |
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Sky&Tel 2005 Calendar by
Dawn Baird-Chleborad
I just now got the Celestial Wonders 2005 Calendar from Sky & Telescope and
it is a BAD A** calendar!. The pics are awesome but what I am really
drooling over...
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3 |
407 |