Amateur astronomy equipment, techniques, info, etc

Archive for December, 2012

Hydrocarbon river flows across Saturn's moon Titan

Hydrocarbon river flows across Saturn’s moon Titan

- — -

> http://arstechnica.com/science/2012/12/hydrocarbon-river-flows-across…

> Although it hasn’t (and almost certainly won’t) reach Voyager-level durability, the joint NASA/ESA Cassini mission has now been in space since 1997, orbiting Saturn for over eight years. The extended mission has allowed the spacecraft to get different perspectives on the planet and its many moons, as well as track features that change over time. As a result, it continues finding new things.

> The latest was announced by the ESA yesterday: a 400km long river that flows into a hydrocarbon sea. Titan is cold enough that water remains frozen but warm enough that some simple hydrocarbons ethane and methane can remain liquid on its surface. We’ve previously identified lakes, small rivers, and large liquid seas on the surface of the moon, but we’ve not gotten these sorts of high-quality images of a large river system before.

.
posted by admin in Uncategorized and have No Comments

Asteroid 4179 Toutatis is tumbling past Earth this week

- — -

> NASA Science News for Dec. 12, 2012

> Asteroid 4179 Toutatis is tumbling past Earth this week. Astronomers are taking advantage of the flyby to ping the space rock using NASA radars and obtain images of unprecedented clarity.

> FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/12dec_touta…

posted by admin in Uncategorized and have No Comments

Geminids 12/12-13

Went outside  ~3:00am EST, for approx 35 minutes.  Clear sky. Counted

~12-15 Geminids.  Most were mag 2-4, and did not leave any trails.    


Email address is a Spam trap.

posted by admin in Uncategorized and have Comment (1)

Asteroid 4179 Toutatis is tumbling past Earth this week

- — -

> NASA Science News for Dec. 12, 2012

> Asteroid 4179 Toutatis is tumbling past Earth this week. Astronomers are taking advantage of the flyby to ping the space rock using NASA radars and obtain images of unprecedented clarity.

> FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/12dec_touta…

posted by admin in Uncategorized and have No Comments

Asteroid 4179 Toutatis is tumbling past Earth this week

- — -

> NASA Science News for Dec. 12, 2012

> Asteroid 4179 Toutatis is tumbling past Earth this week. Astronomers are taking advantage of the flyby to ping the space rock using NASA radars and obtain images of unprecedented clarity.

> FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/12dec_touta…

posted by admin in Uncategorized and have No Comments

Paleoclimate and the cyclical CO2 trend over 400,000 years

Paleoclimate and the cyclical CO2 trend over 400,000 years

NOAA’s Geophysical Fluid Dynamics Laboratory has an interesting report

about Antarctic temperature and atmospheric CO2 in the Vostok ice core

showing the 100,000-year cycle of CO2 over the past 400,000 years.  A

quick view of the chart can be seen here:

    <http://www.gfdl.noaa.gov/paleoclimate>

or here:

<http://www.gfdl.noaa.gov/pix/research/oceans_and_climate/ice_core_rec…>

The PDF report (17 pages, 2.8MB) as published in PALEOCEANOGRAPHY,

Vol. 23, PA2211, can be downloaded/viewed here:

<http://www.gfdl.noaa.gov/bibliography/related_files/jrt0802.pdf>

A related report, "Ocean circulation in a warming climate" and

subtitled "Climate models predict that the ocean’s circulation will

weaken in response to global warming, but the warming at the end of

the last ice age suggests a different outcome", published in NATURE,

has its PDF (3 pages, 210kB) available here:

<http://www.gfdl.noaa.gov/bibliography/related_files/jrt0801.pdf>

posted by admin in Uncategorized and have No Comments

NASA Mars discovery revealed?

Just ran across this on Google News:

http://www.channelnewsasia.com/stories/afp_world/view/1240930/1/.html

Maybe it clears up the mystery of the last few days.

John Savard

posted by admin in Uncategorized and have No Comments

NASA, This Was an Animal's Leg on Mars.

A large leg articulated to an animal near Mars Curiosity Rover:

http://www.wretch.cc/album/show.php?i=lin440315&b=20&f=1556568900&p=255

Close-up view of the fossil leg:

http://www.wretch.cc/album/show.php?i=lin440315&b=20&f=1556568901&p=256

Sources of images:

http://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=0078ML0576076000E1…

http://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=0078MR0576047000E1…

Read more at http://wretchfossil.blogspot.tw

posted by admin in Uncategorized and have No Comments

"Short" T-mount adapter followup

The Opteka T-mount adapter finally arrived, and it was nothing like

the illustration.  It is the same length as the "proper" Fotodiox

T-mount adapter, which also arrived.  I am going to see if I can
return merchandise that does not match the illustration.


Please reply to:         | "We establish no religion in this country, we

pciszek at panix dot com |  command no worship, we mandate no belief, nor

Autoreply is disabled    |  will we ever.  Church and state are, and must

                         |  remain, separate." –Ronald Reagan, 10/26/1984

posted by admin in Uncategorized and have No Comments

The sounds of Mars???

Does the current Mars rover Curiosity have the capability of listening

to the sounds on Mars?

Seems as though it would be a simple matter to equip the rover with a

microphone that picks up sound and transmits those sounds to Earth so

we can hear Martians talking to each other . . . or whatever sounds

there are on Mars, such as wind blowing.

I heard this morning on NPR that NASA is planning another rover built

from "spare parts" from Curiosity.  What would it take to get NASA to

equip the next Rover with such a capability?

———————–

Passport?

I got an M4 and a green beret.

I don’t need a passport.

posted by admin in Uncategorized and have Comments (5)