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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)
December 13th 18 07:41 PM
by Mike Collins[_4_] Go to last post
59 3,798
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)
December 12th 18 06:49 AM
by Gerald Kelleher Go to last post
90 4,099
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?
December 12th 18 04:47 AM
by StarDust Go to last post
5 1,811
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 09:47 PM
by Gerald Kelleher Go to last post
2 1,527
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 01:16 PM
by Gerald Kelleher Go to last post
15 2,007
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 08:41 AM
by Gerald Kelleher Go to last post
1 1,572
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 03:40 PM
by [email protected] Go to last post
4 1,132
Well, this scope takes the cake by RichA[_6_]
$3500 for 3 inches, and tiny sensor. https://vaonis.com/telescopes
December 8th 18 03:22 PM
by [email protected] Go to last post
4 1,773
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 07:08 AM
by Paul Schlyter[_3_] Go to last post
5 1,530
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 11:43 AM
by Gerald Kelleher Go to last post
2 1,622
Leonid and orbital proof by Gerald Kelleher
Sometimes imaging is so enchanting that no comment is the best course...
December 5th 18 09:16 PM
by Gerald Kelleher Go to last post
1 1,055
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 10:37 PM
by StarDust Go to last post
2 1,498
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 11:39 AM
by StarDust Go to last post
10 1,810
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 10:21 AM
by Gerald Kelleher Go to last post
10 1,823
#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 05:47 AM
by RichA[_6_] Go to last post
4 1,423
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 09:34 PM
by Gerald Kelleher Go to last post
0 1,476
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 05:40 PM
by Martin Brown[_3_] Go to last post
27 2,119
timelapse from space by StarDust
https://www.youtube.com/watch?time_continue=255&v=nod7rUzIX8w Enjoy!!!!
(Multi-page thread 1 2)
November 29th 18 06:02 AM
by StarDust Go to last post
10 1,799
InSight probe lands on Mars. Was this the slowest-flying probeever? 6200mph? by RichA[_6_]
November 26th 18 11:19 PM
by Chris L Peterson Go to last post
2 1,306
Nexstar 90 mm f/10 refractor by StarDust
I got this cheap Nexstar achromat refractor, other night looked at the Moon and Mars with it, quiet good! At 110x power full Moon had a slight yellowish/green...
(Multi-page thread 1 2)
November 26th 18 10:53 PM
by StarDust Go to last post
18 1,691
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