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J2000.0 Equinox by John Rivers
hi do I understand J2000.0 equatorial coordinate system correctly? - reference plane is equatorial plane of earth at 1 Jan 2000 12:00 TT - vernal point is...
March 27th 11 06:16 PM
by John Rivers Go to last post
0 983
ETX125 dust cap stuck / telescope repair in Edinburgh? by gogo
Hello All, After years of using my trusty ETX125 without major problem, last week-end, I didn't close the carry box properly and when I picked it up, it...
March 23rd 11 09:59 AM
by gogo Go to last post
3 1,624
ANN: Talk on cosmology, April, Southampton science cafe by N_Cook
11 April talk by Dr Robert Crittenden , cosmologist, on the early Universe, in particular about the very first light, also known as the cosmic...
March 17th 11 09:16 AM
by N_Cook Go to last post
0 1,135
Sky Charting by Dr J R Stockton[_103_]
I'm working on a quasi-SkyChart program. At first, it showed a just a projection such as the Times would publish for its North Pole readers; Polaris in the...
March 8th 11 11:28 PM
by Dr J R Stockton[_104_] Go to last post
1 1,142
Black holes evaporating? by N_Cook
Brian Cox on his prog last night twice mentioned this, as near enough the last throes of the dying universe - how does a black hole "evaporate"? ad: Talks in...
March 7th 11 11:16 PM
by OG Go to last post
5 1,235
M65, M66 & NGC3628 with the Tidal Tail by Danilo Pivato
Hi all, Here is the Leo Triplett with the ST-10XME in Nikkor 300mm f/2,8 @ f/5,6 40 X 30o seconds (tot.: 3,3h) at my website. In the image there are 5 minor...
March 3rd 11 09:12 PM
by Danilo Pivato Go to last post
0 929
So war es damals - Fakten by Daniel Mandic[_2_]
Roland Rieß wrote: Wer bräuchte Hirten, gäbe es keine Wölfe? (Wer hat gleich noch mal den Teufel, und wozu, erfunden?) Mich würde interessieren, auf...
February 28th 11 09:10 PM
by Daniel Mandic[_2_] Go to last post
0 1,145
NGC 2244 & 2237-9: Rosette Nebula - Hydrogen Alpha by Danilo Pivato
Hi all, I wish to introduce to your attention this picture , that you can see at the following...
February 26th 11 01:54 PM
by Jim Go to last post
1 727
Solar System Data by Dr J R Stockton[_102_]
I need the Right Ascension and Declination of the "points" where the perpendiculars to the orbits of the Nine Planets meet the Celestial Sphere. Those would...
February 21st 11 11:24 PM
by Dr J R Stockton[_102_] Go to last post
0 938
Niburu (don't start shooting just yet) by Mark Murphy
Hi all, I wonder if someone might help me settle something? I've heard a lot of theories about a brown dwarf star in our solar system or there about's. Some...
February 21st 11 10:19 PM
by Martin Brown Go to last post
1 995
Kepler & ISS by Dr J R Stockton[_101_]
Weather permitting, there's a chance of seeing Johannes Kepler chasing the ISS on Wednesday...
February 20th 11 11:03 PM
by Dr J R Stockton[_101_] Go to last post
0 1,119
Orion's Belt & Sword: mosaic in H-alpha by Danilo Pivato
Hi all, a photomosaic consisting in 17 shots that show the central part of the constellation of Orion. The mosaic measures approximately: 9x8 (6464x5860...
February 12th 11 03:54 PM
by Danilo Pivato Go to last post
4 1,326
Horizon "moon" programme by newshound
Heaven help us all.
(Multi-page thread 1 2)
February 6th 11 11:10 PM
by newshound Go to last post
10 2,551
Diffraction Limiting a Mk I Eyeball by Martin Brown
I was doing a Christmas lecture earlier in the the week on "Light and Colour". I had an unexpectedly strong positive audience reaction from a very simple and...
(Multi-page thread 1 2)
January 7th 11 04:55 PM
by Martin Brown Go to last post
11 2,952
Sh2-129: Flying Bat Nebula in H-alpha by Danilo Pivato
Hi all, a new image of the constellation of Cepheus made with a telephoto Nikon 300mm/2,8 @ f/4 and ST-10XME. More information is available on the...
January 7th 11 12:54 AM
by Danilo Pivato Go to last post
0 1,043
Heads Up - Mondays by [email protected]
Join Professor Brian Cox and Dara O'Briain to wonder at the night sky, with extraordinary images beamed in from telescopes across the globe. Learn how to...
January 5th 11 10:02 AM
by N_Cook Go to last post
2 1,104
solar eclipse live by Tom Former
January 4th 11 08:33 AM
by Tom Former Go to last post
0 1,080
Choosing "birthday stars" by Abdul Ahad
What follows is a new convention that I believe is more practical than the conventional approach. When the clock strikes midnight and your birthday...
December 28th 10 09:25 AM
by Abdul Ahad Go to last post
3 1,593
Jupiter & Ganymede by Pete Lawrence[_4_]
Hi all, not posted on usenet for a long time! Here's a shot of Jupiter I took with my C-14 on the night of September 3/4 2010. This particular shot was taken...
(Multi-page thread 1 2 3 ... Last Page)
December 19th 10 01:22 AM
by Sam Wormley[_2_] Go to last post
40 6,133
M42 & its surroundings at East, in H-alpha by Danilo Pivato
Hi all, Still a new shots in H-alpha made with a telephoto lens of 300mm f/2.8 stop at f/4 directly from...
December 7th 10 11:20 PM
by Danilo Pivato Go to last post
0 1,012
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