A Space & astronomy forum. SpaceBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Post New Thread
Threads in Forum : Amateur Astronomy Forum Tools Search this Forum Feed Icon
  Thread / Thread Starter Last Post Reverse Sort Order Replies Views
Webb cost climbing over $8 billion from $1 billion estimate. delays imminent by RichA[_6_]
http://www.skyandtelescope.com/astronomy-news/james-webb-space-telescope-additional-delays-likely/
March 7th 18 08:56 AM
by Chris.B[_3_] Go to last post
5 237
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...
(Multi-page thread 1 2 3)
March 2nd 18 07:21 PM
by Quadibloc Go to last post
21 364
Polar astronomy revisited by Gerald Kelleher
On Friday, March 2, 2018 at 8:32:00 AM UTC, Gerald Kelleher wrote: https://www.youtube.com/watch?v=MdFrE7hWj0A The animation is notable for a number of...
March 2nd 18 12:06 PM
by [email protected] Go to last post
1 186
Polar astronomy revisited by Gerald Kelleher
https://www.youtube.com/watch?v=MdFrE7hWj0A The animation is notable for a number of reasons however , in this case, it is applied to observing at the...
March 2nd 18 09:31 AM
by Gerald Kelleher Go to last post
0 178
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)
March 2nd 18 08:37 AM
by Chris.B[_3_] Go to last post
170 855
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 28th 18 09:28 AM
by Gerald Kelleher Go to last post
4 225
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
12 288
Amateur sees supernova at first light by RichA[_6_]
https://phys.org/news/2018-02-amateur-astronomer-captures-rare-massive.html
February 23rd 18 08:45 AM
by RichA[_6_] Go to last post
0 197
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
0 171
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
1 207
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
0 174
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
17 309
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
4 184
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
23 300
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
6 180
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
4 158
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
9 176
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
106 516
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
5 179
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
3 147
Post New Thread


Display Options
Showing threads 261 to 280 of 29224
Sorted By Sort Order
From The
Forum Tools Search this Forum
Search this Forum :

Advanced Search

New posts New posts More than 15 replies or 150 views Hot thread with new posts
No new posts No new posts More than 15 replies or 150 views Hot thread with no new posts
Closed Thread Thread is closed  
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 11:16 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004-2019 SpaceBanter.com.
The comments are property of their posters.