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Announcement from NASA and Roscosmos by Quadibloc
Apparently the return to the Moon is...
September 29th 17 06:11 AM
by Chris.B[_3_] Go to last post
4 111
Have you seen this new 4" telescope prototype? by Borkum Riff
Apologies if you already have seen this. http://unistellaroptics.com/en/product Has anyone taken part in the demos they've done?
(Multi-page thread 1 2)
September 26th 17 03:43 PM
by RichA[_6_] Go to last post
15 151
NASA Confirm 23th September 2017 end of the WORLD by StarDust
https://www.youtube.com/watch?v=mR1ckPow4Ig Enjoy!
(Multi-page thread 1 2 3)
September 25th 17 06:24 PM
by Chris.B[_3_] Go to last post
21 165
Observed path of the Sun by Gerald Kelleher
https://www.esrl.noaa.gov/gmd/grad/solcalc/fig5_0n.gif Many descriptions of the annual path of the Sun at the Equator in context of the Solstices/Equinoxes...
(Multi-page thread 1 2)
September 25th 17 05:32 PM
by Gerald Kelleher Go to last post
12 108
Eclipse glasses lawsuit: As predicted, the parasites come out of the woodwork by RichA[_6_]
Told you so. A US couple have filed a proposed class action lawsuit against Amazon, claiming they sustained eye injuries from solar eclipse glasses purchased...
September 24th 17 04:03 AM
by RichA[_6_] Go to last post
3 126
As promised by Gerald Kelleher
https://www.usap.gov/videoclipsandmaps/spwebcam.cfm The polar day/night cycle and its cause is here to stay with its own sunrise/sunset on the equinoxes and...
September 23rd 17 08:31 AM
by Gerald Kelleher Go to last post
4 77
Questar should have made a 5" Mak-Cass by RichA[_6_]
I'd have liked one. I've owned the 3.5" and the 7" and believe 5" would be idea. Still relatively portable, yet with sufficient aperture to be used under...
(Multi-page thread 1 2 3 ... Last Page)
September 23rd 17 02:03 AM
by RichA[_6_] Go to last post
191 1,803
Science of the Equinox by Gerald Kelleher
A person at the Equator experiences a symmetry of daylight/darkness throughout an orbit of the Sun while their counterpart at the South pole also experiences...
September 22nd 17 03:55 PM
by Gerald Kelleher Go to last post
7 81
The rise of celestial sphere thinking by Gerald Kelleher
https://www.youtube.com/watch?v=kaG6PTVrFP4&t=72s https://www.youtube.com/watch?v=MWwmP4obdwA The notion of the 'sun crossing the celestial equator' along...
(Multi-page thread 1 2)
September 22nd 17 03:36 PM
by Gerald Kelleher Go to last post
10 124
Theory explained in 3 parts by Gerald Kelleher
Newton's idea was the Earth attracts an apple, the moon attracts the tides,the Earth attracts the moon and ultimately the Sun attracts the Earth hence the...
(Multi-page thread 1 2 3 ... Last Page)
September 21st 17 06:02 PM
by Gerald Kelleher Go to last post
60 320
Veil Nebula Closeup by Razzmatazz
Summer is drawing to an end and Cygnus is straight overhead during the night. This may be the best time to observe the Veil nebula, which has 3 bright parts...
September 17th 17 11:41 AM
by StarDust Go to last post
3 77
Astronomy Photographer of the Year 2017 by StarDust
http://www.bbc.com/news/in-pictures-41231623 The winning images from this year's competition have now been announced, with Artem Mironov's vibrant clouds of...
September 17th 17 09:19 AM
by Chris.B[_3_] Go to last post
4 73
eclipse observation questions by Questor
Long time skywatcher, first total solar eclipse... I have read many accounts and seen many pictures, and Bailey's Beads are emphasized. Yet that effect...
September 14th 17 09:00 PM
by Questor Go to last post
0 65
Hurricane season by Gerald Kelleher
https://www.youtube.com/watch?v=vTig9gKegQk The sea temperature fluctuations North and South of the Equator are responsible for seasonal events such as...
September 10th 17 11:20 AM
by Gerald Kelleher Go to last post
1 132
The Pi Thread by Gerald Kelleher
The standard of discussion is so poor mathematically and geometrically that only with the greatest courtesy can it be called a discussion. The relationship...
September 10th 17 04:32 AM
by Quadibloc Go to last post
5 153
Positions of Mercury and Regulus by Gerald Kelleher
https://cdn-images-1.medium.com/max/1600/1*4qdNeV3mk_3S5VZAWoqwPA.jpeg On the eclipse Mercury and Regulus were to the left of the Sun however, due to...
September 9th 17 09:55 AM
by Gerald Kelleher Go to last post
0 149
Mount prices continue to rise by RichA[_6_]
Wow! I saw some mounts from Italy going for near five figures recently. Even cheapo mounts like those from iOptron and the like can top $1000.00 now.. ...
(Multi-page thread 1 2)
September 9th 17 07:44 AM
by Paul Schlyter[_3_] Go to last post
12 138
The Sun Today by Chris L Peterson
Shot this with my Canon 7D at UT 17:24 2017.09.06 with the new equipment I got for the eclipse (Stellarvue 102A on an iOptron CEM25P). So much smoke in the air...
September 8th 17 02:15 PM
by Gary Harnagel Go to last post
8 94
Radio Meteor Obs. Bull. August 2017 Perseids by Chris Steyaert
Radio Meteor Observation Bulletin No. 289 of August 2017 (58 K) is available now as http://www.rmob.org/rmobtext/rmob1708.txt More information and the...
September 7th 17 06:39 PM
by Chris Steyaert Go to last post
0 98
Defining the Equinox by Gerald Kelleher
No offence to the 'first point of aries' guys and their notion of the Sun's motion across an imagined celestial equator,the Sun coming into view on the Equinox...
September 4th 17 10:41 AM
by Gerald Kelleher Go to last post
4 130
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