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Introducing Comet ISON by Sam Wormley[_2_]
Introducing Comet ISON http://apod.nasa.gov/apod/ap121001.html The comet, discovered just over a week ago from Russia by Vitali Nevski (Belarus) and...
October 5th 12 05:49 PM
by Howard Lester[_2_] Go to last post
2 436
Effect of aperture on chromatic aberation? by Paul Ciszek
Way back in undergraduate optics, I was told that reducing the aperture of a lens mitigates various problems such as spherical aberration, and of course it...
(Multi-page thread 1 2)
October 5th 12 05:22 AM
by jonson010 Go to last post
17 1,034
Giant 'Alien Worm' Found on Mars? by palsing[_2_]
HA! http://news.gather.com/viewArticle.action?articleId=281474981174525 \Paul A
October 4th 12 09:00 AM
by jonson010 Go to last post
8 639
Atmospheric thickness by W. eWatson[_2_]
Is there a tool or graph that shows the thickness of the atmosphere at various elevations and accounts for the altitude of the observatory?
(Multi-page thread 1 2)
October 2nd 12 07:01 PM
by oriel36[_2_] Go to last post
17 589
Cheap intensifiers for popular all sky cameras? by W. eWatson[_2_]
See Subject. Anyone know whether such intensifiers might be available say for some Watec or similar cameras?
October 1st 12 06:36 PM
by Chris L Peterson Go to last post
3 235
Difference between two minor planet data files? by W. eWatson[_2_]
What is the difference between MPCORB.DAT and ASTORB.DAT? Do they contain completely different sets of MPs, or were produced differently in some way?
October 1st 12 09:18 AM
by Per Erik Jorde[_5_] Go to last post
5 364
Space Weather News for Oct. 1, 2012 by Sam Wormley[_2_]
Space Weather News for Oct. 1, 2012 http://spaceweather.com CME IMPACT: A coronal mass ejection (CME) hit Earth's magnetic field on Sept. 30th. At...
October 1st 12 05:34 AM
by Sam Wormley[_2_] Go to last post
0 199
C/2012 S1 (ISON) by Sam Wormley[_2_]
Space Weather News for Sept. 25, 2012 http://spaceweather.com SUNDIVING COMET: Astronomers are paying close attention to a newly-discovered comet, C/2012 S1...
October 1st 12 05:08 AM
by Sam Wormley[_2_] Go to last post
2 328
ALERT: Geomagnetic K-index of 7 -- 2012 Oct 01 0300 UTC by Sam Wormley[_2_]
Space Weather Message Code: ALTK07 Serial Number: 86 Issue Time: 2012 Oct 01 0305 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2012 Oct...
October 1st 12 04:11 AM
by Sam Wormley[_2_] Go to last post
0 133
WARNING: Geomagnetic K-index of 7 or greater expected -- Issue Time:2012 Oct 01 0243 UTC by Sam Wormley[_2_]
Space Weather Message Code: WARK07 Serial Number: 40 Issue Time: 2012 Oct 01 0243 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid...
October 1st 12 04:00 AM
by Sam Wormley[_2_] Go to last post
0 271
ALERT: Geomagnetic K-index of 6 -- Threshold Reached: 2012 Oct 010148 UTC by Sam Wormley[_2_]
Space Weather Message Code: ALTK06 Serial Number: 293 Issue Time: 2012 Oct 01 0151 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2012 Oct...
October 1st 12 02:54 AM
by Sam Wormley[_2_] Go to last post
0 293
WARNING: Geomagnetic K-Index of 6 expected -- Issue Time: 2012 Oct01 0140 UTC by Sam Wormley[_2_]
Space Weather Message Code: WARK06 Serial Number: 209 Issue Time: 2012 Oct 01 0140 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2012...
October 1st 12 02:45 AM
by Sam Wormley[_2_] Go to last post
0 288
WARNING: Geomagnetic K-index of 5 expected -- 2012 Oct 01 0007 UTC by Sam Wormley[_2_]
Space Weather Message Code: WARK05 Serial Number: 801 Issue Time: 2012 Oct 01 0007 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2012 Oct 01 0030...
October 1st 12 01:36 AM
by Sam Wormley[_2_] Go to last post
0 187
WATCH: Geomagnetic Storm Category G1 Predicted -- Issue Time: 2012Sep 30 2121 UTC by Sam Wormley[_2_]
Space Weather Message Code: WATA20 Serial Number: 498 Issue Time: 2012 Sep 30 2121 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest...
September 30th 12 10:36 PM
by Sam Wormley[_2_] Go to last post
0 329
Pocket Sky Atlas Challenges for October by John Kulczycki
In case you missed them last time around, here they are again and if you found them last orbit, then it's time to say hello to old...
September 30th 12 06:05 PM
by John Kulczycki Go to last post
0 292
Voice from the past by Jan Owen
It's been a long time, but I thought I'd just drop in here, & see how many of the old gang are still around... I never intended to leave SAA; but my ISP...
(Multi-page thread 1 2 3 ... Last Page)
September 30th 12 03:27 AM
by Jan Owen Go to last post
87 1,482
Envirokooks beware, THIS is what will power spacecraft, not uselesssolar panels by $27 TRILLION to pay for Kyoto
Solar panels are fine for near-Earth operations on a small scale where their miniscule amounts of power can be used, but not for deeper...
September 30th 12 12:23 AM
by Brad Guth[_3_] Go to last post
1 408
WATCH: Geomagnetic Storm Category G2 Predicted by Sam Wormley[_2_]
Space Weather Message Code: WATA30 Serial Number: 97 Issue Time: 2012 Sep 28 2027 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest...
September 28th 12 10:36 PM
by Sam Wormley[_2_] Go to last post
0 343
What color is the moon? by Paul Ciszek
My camera has a choice of "white balance" settings. If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out...
(Multi-page thread 1 2)
September 27th 12 11:09 AM
by William Hamblen[_2_] Go to last post
16 769
earth's tilt by RichD
When and how did astronomers determine that the earth's axis tilts from the ecliptic, and its value? -- Rich
(Multi-page thread 1 2 3 ... Last Page)
September 25th 12 08:10 PM
by oriel36[_2_] Go to last post
63 2,363
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