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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)
Today 01:31 AM
by RichA[_6_] Go to last post
31 35
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...
Yesterday 06:39 PM
by Gerald Kelleher Go to last post
0 6
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...
Yesterday 01:42 AM
by RichA[_6_] Go to last post
0 13
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...
February 18th 18 08:09 PM
by Gerald Kelleher Go to last post
2 15
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 64
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 21
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 57
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 36
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 24
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 53
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
106 131
Twin Takahashi set-up. Nice photos by RichA[_6_]
https://www.diyphotography.net/gear-methods-shooting-deep-space-photographer-spotlight-qa-astrophotographer-sara-wager/
February 6th 18 11:31 PM
by RichA[_6_] Go to last post
5 44
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 36
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 43
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 55
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 37
cave astrola scopes by [email protected]
My astronomy club has a 16 inch cave astrola. I would like to fix or improve the drive but need schematics and or manual. Does anyone have their manual? Ted
January 31st 18 02:04 AM
by RichA[_6_] Go to last post
4 242
The so-called inverse square law by Gerald Kelleher
Despite comments on the demise of sci.astro.amateur, the people involved in magnification and identification have moved to moderated forums so don't have to...
January 28th 18 01:57 PM
by Gerald Kelleher Go to last post
2 39
No Significant Relief from Global Warming by Quadibloc
due to this particular cause... http://www.theregister.co.uk/2018/01/19/sun_earth_drift/ John Savard
(Multi-page thread 1 2 3 ... Last Page)
January 28th 18 08:39 AM
by Chris.B[_3_] Go to last post
68 142
Time to get serious.. and back on topic! by Chris.B[_3_]
Now, even better than light pollution!??! https://preview.tinyurl.com/ydae2tul Aren't disco mirror balls so yesterday? ;-)
January 26th 18 09:22 AM
by Chris.B[_3_] Go to last post
7 54
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