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The star of Bethlehem by Gerald Kelleher
I am a Christian astronomer so it interests me only in the fact that no such information on location can be ascertained from a star rising in the East or any...
(Multi-page thread 1 2)
Today 02:33 AM
by Thomas 'PointedEars' Lahn Go to last post
15 87
46P, can't see by StarDust
I live in the city, major light pollution, could not see 46P with my 80mm APO, mounted on NexStar GT goto. I know my GOTO points to the right location. I slew...
(Multi-page thread 1 2 3 ... Last Page)
Today 02:20 AM
by Thomas 'PointedEars' Lahn Go to last post
31 189
Lat/Long and timekeeping system for Mars by Gerald Kelleher
It took many, many millions of years for life on Earth to adapt to the 24 hour cycle notwithstanding the annual day/night cycle. The same system which applies...
(Multi-page thread 1 2 3 ... Last Page)
Yesterday 04:07 PM
by Paul Schlyter[_3_] Go to last post
89 523
China mission launches to far side of Moon by StarDust
https://www.bbc.com/news/science-environment-46471668 So, what's on the Moon what we still don't know?
Yesterday 07:55 AM
by StarDust Go to last post
3 342
sundial at South Pole by Gerald Kelleher
https://www.youtube.com/watch?v=pnuLTeHB3yU There is only one day/night cycle at the South Pole with Polar noon in 3 weeks on the Solstice. The residual daily...
December 9th 18 10:47 PM
by Gerald Kelleher Go to last post
2 487
Lat/Long system for Mars continued by Gerald Kelleher
When Gemma Frisius first proposed the use of timekeeping to locate geographical locations on Earth in 1530, it took a number of centuries to get the scheme...
(Multi-page thread 1 2)
December 9th 18 02:16 PM
by Gerald Kelleher Go to last post
15 434
Sunrise on the Solstice by Gerald Kelleher
A myth has grown up around the notion that sunrise continues to occur later after the...
December 9th 18 09:41 AM
by Gerald Kelleher Go to last post
1 365
The "plague" of landscape-based astrophotos by RichA[_6_]
It's nice that Joe Average camera shooter is lured to look at Milky Way, but the tidal wave of these images begins to blur together with few standing out as...
December 8th 18 04:40 PM
by [email protected] Go to last post
4 216
Well, this scope takes the cake by RichA[_6_]
$3500 for 3 inches, and tiny sensor. https://vaonis.com/telescopes
December 8th 18 04:22 PM
by [email protected] Go to last post
4 497
Mars 2.2 mins apart from Neptune by RichA[_6_]
Not visible from N. America but maybe someone can get a shot elsewhere? http://www.astronomy.com/news/2018/12/mars-tonight
December 8th 18 08:08 AM
by Paul Schlyter[_3_] Go to last post
5 362
Comet P/46 by StarDust
https://www.youtube.com/watch?v=kkzbaI9nxBc This data was taken December 1 and December 4, 2018. This comet is expected to be seen by the unaided eye by the...
December 8th 18 04:56 AM
by StarDust Go to last post
3 341
When things fail, people pick themselves up by Gerald Kelleher
https://www.youtube.com/watch?v=9XMfhKxwo2c It takes courage to take part in engineering or compositional astronomy as people learn and adapt.
December 6th 18 12:43 PM
by Gerald Kelleher Go to last post
2 458
Leonid and orbital proof by Gerald Kelleher
Sometimes imaging is so enchanting that no comment is the best course...
December 5th 18 10:16 PM
by Gerald Kelleher Go to last post
1 182
Amateur Don Machholz Discovers His 12th Comet! by StarDust
https://www.skyandtelescope.com/astronomy-news/observing-news/machholz-12th-comet/ Arizona comet hunter Don Machholz did it again! He discovered his 12th...
December 2nd 18 11:37 PM
by StarDust Go to last post
2 480
DSLR astro photography by StarDust
Canon Rebel 300D was used for astro photography by many 10-15 years ago. Some took out the IR filter or even installed cooling for the chip. I heard, 6 mega...
(Multi-page thread 1 2)
December 2nd 18 12:39 PM
by StarDust Go to last post
10 490
Astra geostationary satellites through telescope by StarDust
https://www.youtube.com/watch?v=rIesWBTUeiI It's called Geostationary Oscillation. Not all geo sats are directly above the equator, they can be slightly...
(Multi-page thread 1 2)
December 2nd 18 11:21 AM
by Gerald Kelleher Go to last post
10 497
#MeToo About to Send America into a New Dark Age by Quadibloc
Perhaps that is just a bit hyperbolic, but I was truly shocked and dismayed to encounter this news...
December 2nd 18 06:47 AM
by RichA[_6_] Go to last post
4 444
Walking back to climate research by Gerald Kelleher
Had Copernicus not made the compromise to predictive modelers, planetary climate would be discussed normally as the rate of change in surface condition across...
November 30th 18 10:34 PM
by Gerald Kelleher Go to last post
0 451
Here it is: the real impact of global warming by Quadibloc
An article on the BBC illustrates the kind of thing global warming is doing to people: https://www.bbc.com/news/world-asia-45715550 John Savard
(Multi-page thread 1 2 3)
November 30th 18 06:40 PM
by Martin Brown[_3_] Go to last post
27 391
timelapse from space by StarDust
https://www.youtube.com/watch?time_continue=255&v=nod7rUzIX8w Enjoy!!!!
(Multi-page thread 1 2)
November 29th 18 07:02 AM
by StarDust Go to last post
10 653
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