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Polar evening by Gerald Kelleher
https://www.usap.gov/videoclipsandmaps/spwebcam.cfm In about a month, the forward motion of the Earth through space will turn the South pole through the...
Yesterday 11:58 AM
by Gerald Kelleher Go to last post
3 33
Real astronomical challenges by Gerald Kelleher
The partitioning of direct/retrogrades by perspective is immediately apparent in terms of the illusory loops of the slower moving outer planets and the actual...
Yesterday 10:02 AM
by Gerald Kelleher Go to last post
2 18
NASA's biggest worry right now: What if something goes wrong with the Webb telescope? by Davoud[_1_]
Chris.B: How does an impoverished country, so deeply in debt, like the USA, manage such costly exercises? Impoverished? Really? I should get out...
(Multi-page thread 1 2 3 ... Last Page)
Yesterday 08:12 AM
by Chris.B[_3_] Go to last post
140 141
Webb images are not going to be like Hubble's. It'll be basically monochromatic by RichA[_6_]
It's an infra-red telescope. It will image from orangish to IR, no yellow, no green, blue or violet light. It's mirrors are gold-plated, so the visual images...
(Multi-page thread 1 2)
February 23rd 18 07:27 PM
by Chris L Peterson Go to last post
12 40
Amateur sees supernova at first light by RichA[_6_]
February 23rd 18 08:45 AM
by RichA[_6_] Go to last post
0 25
Supernova research by Gerald Kelleher
http://www.latimes.com/science/sciencenow/la-sci-sn-supernova-birth-camera-20180221-story.html Rather than consider certain supernova as the death of a star,...
February 22nd 18 09:52 AM
by Gerald Kelleher Go to last post
0 14
Gravitational lenses. I don't think this was ever followed-up on by RichA[_6_]
I saw this in a 1966 Sky & Tel. Since it happened in 1988, the event proceeded existing proof of lensing, but his would have been "real-time" and not just a...
February 20th 18 05:16 AM
by Gerald Kelleher Go to last post
1 30
Earth and moon from space by Gerald Kelleher
https://www.sciencealert.com/images/2018-02/earth-moon_navcam1.jpg Lovely to appreciate as an astronomer within context of the motions of planets and moons in...
February 19th 18 06:39 PM
by Gerald Kelleher Go to last post
0 17
NASA's biggest worry right now: What if something goes wrongwith the Webb telescope? by Chris.B[_3_]
On Saturday, 10 February 2018 02:34:20 UTC+1, RichA wrote: On Friday, 9 February 2018 19:32:52 UTC-5, Chris L Peterson wrote: On Fri, 9 Feb 2018...
(Multi-page thread 1 2)
February 18th 18 01:11 AM
by Chris L Peterson Go to last post
17 81
People without integrity by Gerald Kelleher
https://apod.nasa.gov/apod/ap170319.html A planet with a zero degree inclination !!! A pivoting circle of illumination off the Equator !!!. The line...
February 15th 18 08:22 PM
by Gerald Kelleher Go to last post
4 35
Comet-like object seen moving across the evening sky (but cometsdon't move a few degrees in a few minutes!) by Uncle Bob[_2_]
Last evening I was in Vallejo, CA (38n,122W) at 1830 pst and observed, to my astonishment, a naked-eye comet-like object moving across the sky about 20deg S of...
(Multi-page thread 1 2 3)
February 15th 18 04:10 AM
by Davoud[_1_] Go to last post
23 76
Direct/retrograde loops by Gerald Kelleher
The geocentric astronomers up to the time of Copernicus saw that all planets would occasionally process a loop against the background stars...
February 12th 18 09:08 AM
by Gerald Kelleher Go to last post
6 47
Viewing Sun with Baader Solar film by [email protected]
Hi All, With Baader Solar Film, Will I be able to see Granular view of Sun and Dark Spots?? I have Celestron 127 Power Seeker telescope. Have any one used...
February 12th 18 06:33 AM
by RichA[_6_] Go to last post
4 36
Space Shuttle still MILES better than egomaniac Musk's "Space-X" by RichA[_6_]
More flexible, more powerful. http://money.cnn.com/2018/02/06/technology/future/biggest-rockets-falcon-heavy-comparison/index.html
February 11th 18 08:54 AM
by Chris.B[_3_] Go to last post
9 62
Another source of light pollution by RichA[_6_]
Paris has rules against shop lights from 1-5am to deal with light pollution and energy waste. So of course, someone had to try to go around the...
(Multi-page thread 1 2 3 ... Last Page)
February 9th 18 03:32 PM
by Chris L Peterson Go to last post
106 154
Twin Takahashi set-up. Nice photos by RichA[_6_]
February 6th 18 11:31 PM
by RichA[_6_] Go to last post
5 58
Most observers dormant in cold weather by RichA[_6_]
And why not? Cold weather kills about 3 million people a year world-wide, about 150,000 people alone in the U.S. and 50,000 in Britain, despite them being a...
February 5th 18 08:29 AM
by Chris.B[_3_] Go to last post
3 50
Radio Meteor Obs. Bull. January 2018 Bootids by Chris Steyaert
Radio Meteor Observation Bulletin No. 294 of January 2018 (63 K) is available now as http://www.rmob.org/rmobtext/rmob1801.txt More information and the...
February 3rd 18 04:57 PM
by Chris Steyaert Go to last post
0 56
ANOTHER source of "astronomical" pollution. by RichA[_6_]
A--hole New Zealander. https://mashable.com/2018/01/25/rocket-lab-humanity-star-bad-for-astronomy/
(Multi-page thread 1 2)
February 1st 18 03:34 PM
by Chris L Peterson Go to last post
12 74
Not an ideal eclipse of the moon in N. America tomorrow by RichA[_6_]
Well, it's only partial in the N.E.part of North America. It begins around 5:00am, the max is around 7:30 and the moon sets 4 minutes later! Plus. -12C here...
January 31st 18 04:11 AM
by RichA[_6_] Go to last post
0 47
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