abonnement bol.com Unibet Coolblue
  maandag 19 december 2005 @ 16:35:56 #26
84252 Verdwaalde_99
Definitief uitgelogged.
pi_33219369
Mooie foto's in de openingspost. Alsof het grote energie is die gekleurde "dingen".

Zoiets wil ik wel in mijn hoofd hebben zweven

Oh Oh Oh wat een mooie kleuren.....

Meteen maar richting bookmarks deze topic
Sinds 2007 anti depressiva vrij,
In 2008 gezonder enigsins rustiger blij.
Gekte en waanzin voorbij.
Eindelijk tijd voor de normalere realiteit.
pi_33222232
tvp
  woensdag 21 december 2005 @ 13:15:56 #28
100054 Quarks
little Eiffel! little Eiffel!
pi_33272103
quote:
The Big Bangs for Astronomers in 2005

PHOENIX, Ariz. -- The past year in space science and astronomy was dominated by debate and some tantalizing near-findings.

A hangover of heady Mars discoveries festered while astronomers on the ground obtained evermore intimate glimpses of the outer solar system and the solar neighborhood but stopped short of declaring agreement on what they’d found. To punctuate that ambiguity with some stark clarity elsewhere, NASA smacked a comet and found it to be all fluff.

Among the highlights:

The 10th Planet?

You might think the discovery of an object larger than Pluto orbiting the Sun would automatically be hailed as the long-sought 10th planet. Caltech’s Mike Brown and his colleagues figured as much. Not so fast, many astronomers said. This new world is one of perhaps thousands out there that await discovery. Will we call them all planets? Should Pluto even be considered a planet? In a weird twist to the debate, Brown suggests we all ignore the scientific debate and let culture decide. One has to wonder if that’s the sort of ambiguity science ought to promote.

Signs of Life on Mars?

This story extends back to last year and looks like the sort of mystery that’ll keep scientists scratching their heads for years to come. The air of Mars seems to contain pockets of methane in doses that should not exist. Perhaps it’s the belchings of subsurface microbes, European astronomers said early this year. They support that view with new evidence for blocks of underground ice in the same region as the methane, based on observations by ESA’s Mars Express. The ice could be supplying the precious liquid water needed to support the biology, they figure. Other astronomers think the reasoning is very speculative, however.

Super-Earth Discovered

Astronomers expect to eventually find many Earth-sized planets around other stars. But technology can’t spot such small objects yet. Pushing the limits of existing methods, Paul Butler of the Carnegie Institution of Washington and colleagues detected a world just 7.5 times the mass of Earth orbiting another star and said it must be rocky. This year marked the 10th anniversary of the discovery of the first extrasolar planet around a normal star, and astronomers have gathered enough data on about 150 planets since then to say, in the words of planet-hunting guru Geoff Marcy of the University of California, Berkeley, "I imagine most stars have terrestrial planets. It seems hard not to form them."

Birth of a Black Hole

An explosion 2.2 billion years ago, whose light just arrived at Earth this year, was detected and then monitored by an unprecedented array of telescopes on the ground and in space. The event prompted a furious exchange of e-mails. Within moments, the scientists, led by Neil Gehrels of NASA’s Goddard Space Flight Center, suspected they had seen the birth of a black hole as it happened (well, except for that previously mentioned time lag of 2.2 billion years). The event was triggered by the merger of two neutron stars, the thinking goes.

First Photo of an Extrasolar Planet?

A series of announcements about the possible first picture of a planet around another star ended up in a debate that has yet to be resolved. In 2004 a team based at the European Southern Observatory (ESO) said they had made what they said was likely the first picture of an extrasolar planet. The object, 2M1207b, appeared bound to a young but failed star known as a brown dwarf sitting about 200 light-years from Earth.But it was also possible that 2M1207b was instead a distant background object.

This past April, Ralph Neuhaeuser of the Astrophysical Institute & University Observatory said his team had made the first confirmed picture of a planet around another star called GQ Lupi, some 400 light-years away. Both pictures are real, but astronomers can’t agree on the masses of the objects in the images or, for that matter, how to state the difference between large planets and small stars. We’ll have to wait for history to tell us if this was a big story or not.

Protecting Ourselves

Some day, scientists have been telling us for some years now, we’ll have to deal with an incoming asteroid or comet that would destroy civilization at worst or wipe out a city at least. Big impacts have occurred before, and there will be more. But we don’t know enough about space rocks and their composition to plan properly for deflecting or destroying such a menace. Turnabout proved to be fair play when NASA’s Deep Impact mission slammed a probe into Comet Tempel 1 on the 4th of July.

The upshot? This comet was fluffy, unlike others that have been studied up close. Meanwhile, a group of scientists and astronauts, led by Russell Schweickart, a former Apollo astronaut, prodded NASA to visit asteroid Apophis, which has a slight chance of hitting us a few decades hence. NASA’s response: A purely scientific mission might be considered, but we have plenty of time to mount a diversion if further observations show this thing would really hit.
Stem ook op de "Best space images of 2005"

Een paar genomineerden:





* 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.*
pi_33291777
interessante software voor de amatuer astro-fotografen onder ons....

Kost wel een paar centjes..... $ 299.00
quote:
MaxDSLR Astrophotography Software for Digital SLR camera users!




MaxDSLR makes it easy to focus, guide, capture RAW frames, and stack multiple exposures.
Image Processing
Use MaxDSLR to turn your raw frames into a gorgeous celestial vista.

MaxDSLR
Astrophotography Software for Digital SLR camera users!

With the new breed of Digital SLR cameras, astrophotography is now within reach of many amateur astronomers. As DSLRs are not able to take single long exposures, software like MaxDSLR can be used to extend the exposure time and to stack multiple images to create great astrophotos.

High quality imaging with DSLRs requires proper focus, good guiding, capturing RAW frames, and stacking multiple long exposures. MaxDSLR makes this easy. MaxDSLR provides a complete set of focus tools, including a rapid image download mode, 3-D focus graph, and measurement of peak, FWHM, and Half Flux Diameter. In addition, with suitable digitally-controlled focuser, MaxDSLR can provide full autofocus.

Connect a webcam, DSI, LPI, or Lumenera camera for use as an autoguider – or use it as the main camera for deep sky or planetary imaging. For optimum RAW frame capture, MaxDSLR will directly download raw images from the camera, and save them in FITS format. Raw frames are best because they have higher bit depth, have not been compressed, and have not been debayered (converted to color). This is the optimum format for dark frame and flat field correction, and provides the highest dynamic range.

Sequencing allows you to take multiple frames at different exposures times and different ISO settings. This can be used to optimize detection of both bright and faint objects in the field. MaxDSLR supports popular shutter control cables, to allow for longer single exposures. Stacking longer individual frames results in lower overall read noise, producing deeper images faster.

What about RAW frames saved on the camera's flash card? No problem! MaxDSLR reads RAW frames from popular DSLR cameras. Once the images have been acquired, MaxDSLR provides a complete suite of processing tools. Batch process all your exposures for dark and flat calibration, conversion to color (Debayer), etc. Then stack the images with optional auto-alignment to produce the highest quality image.

MaxDSLR is designed for digital camera users who want to take high quality images of celestial objects. MaxDSLR provides a number of important benefits to DSLR users:
Support for Canon, Nikon, Olympus, webcams, DSI, LPI, and Lumenera cameras
Reads DSLR RAW formats
Built-in focus tools
Built-in autoguiding
Longer individual exposures via add-on shutter control cable
Automatic exposure sequences
Raw frame processing for optimum dark subtraction and high bit depth
Automatic stacking with auto-alignment
Advanced processing feature such as Range Restricted FiltersTM, color balance and saturation adjustment

MaxDSLR features include:
Reads popular DSLR RAW formats
Kernel Filters
Unsharp Mask
Digital Development Processing (DDP)
Adjust color balance and saturation
Export to FITS, TIFF, JPEG, PNG, or BMP format
New buffering technology handles high bit depth, multi-megapixel images

System Requirements
Windows® 98, 98SE, NT 4,0, 2000 or XP, 512 MB RAM, 20 MB disk space, 1024x768 minimum video recommended (800x600 minimum), 16- bit color (8-bit minimum), Internet Explorer 4 or higher
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  woensdag 21 december 2005 @ 23:03:02 #30
100054 Quarks
little Eiffel! little Eiffel!
pi_33292214
quote:
Op woensdag 21 december 2005 22:53 schreef -CRASH- het volgende:
interessante software voor de amatuer astro-fotografen onder ons....

Kost wel een paar centjes..... $ 299.00
[..]
Mooi
$299 is geen geld voor een fatsoenlijk software pakket hoor.
* 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.*
pi_33292507
quote:
Op woensdag 21 december 2005 23:03 schreef Quarks het volgende:

Mooi
$299 is geen geld voor een fatsoenlijk software pakket hoor.
koers ligt ongeveer gelijk, zie ik.
$ 1.1977 ..... EU 1.1872
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  donderdag 22 december 2005 @ 15:55:32 #32
100054 Quarks
little Eiffel! little Eiffel!
pi_33311646
quote:
Gedetailleerd beeld van centrum melkwegstelsel

Astronomen van de universiteit van Californie in Los Angeles en hun collega's hebben de eerste gedetailleerde foto van het centrum van ons melkwegstelsel gemaakt, inclusief het gebied rondom het supermassieve zwarte gat. Hiervoor werd een nieuwe laser gebruikt bij het W. M. Keck observatorium in Hawaii.

"Alles is veel duidelijker nu," aldus Andrea Ghez, professor in fysica en astronomie aan de universiteit en leider van het onderzoeksteam. "We hebben een laser gebruikt om het beeld van de telescoop te verbeteren. Dit is een spectaculaire doorbraak, want nu kunnen we zwarte gaten nog beter begrijpen."

Astronomen zijn gewend aan het werken met wazige foto's, wat komt door de atmosfeer van de aarde. Een laser kan echter deze atmosferische verstoringen corrigeren en hierdoor ontstaan heldere foto's. Deze nieuwe technologie, wat Laser Guide Star adaptieve optiek wordt genoemd, zal leiden tot nieuwe ontdekkingen in de kosmos.

"We zijn al jaren op zoek naar technieken om de verstoringen in de atmosfeer te 'verslaan' en om hoge resolutie foto's te produceren," zei ze. "We zijn blij dat de eerste observaties met de laser succesvol zijn verlopen."

Hieronder de foto's van de kern van ons melkwegstelsel. Links de nieuwe foto en rechts de foto zonder gebruik te maken van de laser. Zie jij het verschil?
* 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.*
pi_33315744
quote:
Op donderdag 22 december 2005 15:55 schreef Quarks het volgende:

[..]

[afbeelding]
Kunnen ze niet gewoon hubble gebruiken?
  vrijdag 23 december 2005 @ 10:55:57 #34
100054 Quarks
little Eiffel! little Eiffel!
pi_33338181
quote:
Op donderdag 22 december 2005 18:17 schreef Kered het volgende:

[..]

Kunnen ze niet gewoon hubble gebruiken?
Hubble is niet van hun.
Weet je wel hoeveel het kost om hubble te gebruiken.
quote:
New Moons and Rings Found at Uranus

Astronomers have discovered new rings and small moons around Uranus and found surprising changes in satellite orbits around the giant planet.

NASA's Hubble Space Telescope photographed a pair of previously unknown rings. The largest is twice the diameter of the planet's previously known rings. The new rings are so far from the planet that they are being called Uranus's "second ring system."

Hubble also spotted two small satellites. One shares its orbit with one of the newly discovered rings. Most surprisingly, the orbits of Uranus's family of inner moons have changed significantly in the last decade, the new data reveal.

Collectively, the discoveries mean Uranus has a densely packed, rapidly changing, and possibly unstable dynamical system of orbiting bodies.

"The new discoveries dramatically demonstrate that Uranus has a youthful and dynamic system of rings and moons," says Mark Showalter of the SETI Institute. "Until now nobody had a clue the rings were there, we had no right to expect them."

Since dust in such an orbit is expected to be depleted by spiraling away, the rings must be continually replenished with fresh material. Showalter and collaborator Jack Lissauer of the NASA Ames Research Center propose that the outermost ring is replenished by a 12-mile-wide companion satellite, named Mab, which they first saw in 2003 using Hubble. Meteoroid impacts continually blast dust off the surface of Mab, and the dust then spreads out into a ring around Uranus.

Other small moons are linked to rings, including Amalthea at Jupiter, Pan at Saturn, and Galatea at Neptune.

Mab's ring receives a fresh infusion of dust from each impact. In this way, nature "balances the books" by keeping the ring supplied with new dust while older dust spirals away or bangs back into the moon, the thinking goes.

Showalter and Lissauer have measured numerous changes to the orbits of Uranus's inner moons since 1994.

“This appears to be a random or chaotic process, where there is a continual exchange of energy and angular momentum between the moons," Lissauer said. "The changes in the last ten years are small, but the thing about chaos is that small changes build up exponentially with time. As a result, this suggests that the entire system is orbitally unstable."

The moons may begin to collide in a few million years, Lissauer figures.

Perhaps the most unstable moon of all is tiny Cupid, whose orbit brings it within 500 miles of the moon Belinda.

Showalter and Lissauer propose that their discovery of a second ring, which orbits closer to the planet than the new outermost ring, provides further evidence for collisional evolution of the system. This ring orbits in the midst of the moons but has no visible body to re-supply it with dust.

"This ring may be the telltale sign of an unseen belt of bodies a few feet to a few miles in size," Showalter said. He proposes that the collisional disruption of a moon in Uranus's past could have produced the debris ring they now observe.
* 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.*
pi_33340522
Moet je ook ff de foto's erbij plaatsen Quarks

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  vrijdag 23 december 2005 @ 12:40:41 #36
77130 star_gazer
Aussie Aussie Aussie, Oy oy oy
pi_33340660
Waarom sturen ze nou geen misssie naar Uranus... We weten nog veels te weinig van die planeet!
"End this war against drugs. Legalise the drug against wars."
-
[b]Op donderdag 28 september 2006 09:12 schreef Rio het volgende:[/b]
Uiteindelijk is dit een star_gazer-krijgt-een-keiharde-lul-van-zichzelf-omdat-hij-zichzelf-verheven-voelt topic.
pi_33340846
quote:
Op vrijdag 23 december 2005 12:40 schreef star_gazer het volgende:
Waarom sturen ze nou geen misssie naar Uranus... We weten nog veels te weinig van die planeet!
Helaas geen missie naar Uranus...
En zal ook NIET bezocht worden door de
New Horizon missie
die naar Pluto en de Kuiperbelt gaat

Klik foto om een 31 MB tif formaat te downloaden
quote:
New Horizons
The New Horizons Pluto-Kuiper Belt Mission will help us understand worlds at the edge of our solar system, by making the first reconnaissance of Pluto and Charon – a "double planet" system and the last in our solar system to be visited by spacecraft. The mission will then visit one or more Kuiper Belt Objects, in the region beyond Neptune. (Launch: 2006 January)


[ Bericht 1% gewijzigd door -CRASH- op 23-12-2005 13:14:20 ]
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  vrijdag 23 december 2005 @ 13:48:23 #38
100054 Quarks
little Eiffel! little Eiffel!
pi_33342376
quote:
Op vrijdag 23 december 2005 12:34 schreef -CRASH- het volgende:
Moet je ook ff de foto's erbij plaatsen Quarks

[afbeelding]
Vergeten, dank je
* 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.*
pi_33353767
quote:
An Explosion on the Moon
23-12-2005

So you thought nothing ever happens on the moon?

Right: The red dot marks the location of the Nov. 7, 2005, meteoroid impact. Credit: NASA/MSFC/Bill Cooke. Larger Image

December 23, 2005: NASA scientists have observed an explosion on the moon. The blast, equal in energy to about 70 kg of TNT, occurred near the edge of Mare Imbrium (the Sea of Rains) on Nov. 7, 2005, when a 12-centimeter-wide meteoroid slammed into the ground traveling 27 km/s.

"What a surprise," says Marshall Space Flight Center (MSFC) researcher Rob Suggs, who recorded the impact's flash. He and colleague Wes Swift were testing a new telescope and video camera they assembled to monitor the moon for meteor strikes. On their first night out, "we caught one," says Suggs.

The object that hit the moon was "probably a Taurid," says MSFC meteor expert Bill Cooke. In other words, it was part of the same meteor shower that peppered Earth with fireballs in late October and early November 2005.

The moon was peppered, too, but unlike Earth, the moon has no atmosphere to intercept meteoroids and turn them into harmless streaks of light. On the moon, meteoroids hit the ground--and explode.

"The flash we saw," says Suggs, "was about as bright as a 7th magnitude star." That's two and a half times dimmer than the faintest star a person can see with their unaided eye, but it was an easy catch for the group's 10-inch telescope.

Cooke estimates that the impact gouged a crater in the moon's surface "about 3 meters wide and 0.4 meters deep." As moon craters go, that's small. "Even the Hubble Space Telescope couldn't see it," notes Cooke. The moon is 384,400 km away. At that distance, the smallest things Hubble can distinguish are about 60 meters wide.

This isn't the first time meteoroids have been seen hitting the moon. During the Leonid meteor storms of 1999 and 2001, amateur and professional astronomers witnessed at least half-a-dozen flashes ranging in brightness from 7th to 3rd magnitude. Many of the explosions were photographed simultaneously by widely separated observers.


Above: The Nov. 7th lunar Taurid explosion, shown as a sequence of 6 false-color video frames. Credit: Wes Swift/NASA

Since the Leonids of 2001, astronomers have not spent much time hunting for lunar meteors. "It's gone out of fashion," says Suggs. But with NASA planning to return to the moon by 2018, he says, it's time to start watching again.

There are many questions that need answering: "How often do big meteoroids strike the moon? Does this happen only during meteor showers like the Leonids and Taurids? Or can we expect strikes throughout the year from 'sporadic meteors?'" asks Suggs. Explorers on the moon are going to want to know.

"The chance of an astronaut being directly hit by a big meteoroid is miniscule," says Cooke. Although, he allows, the odds are not well known "because we haven't done enough observing to gather the data we need to calculate the odds." Furthermore, while the danger of a direct hit is almost nil for an individual astronaut, it might add up to something appreciable for an entire lunar outpost.

Of greater concern, believes Suggs, is the spray—"the secondary meteoroids produced by the blast." No one knows how far the spray reaches and exactly what form it takes.

Also, ground-shaking impacts could kick up moondust, possibly over a wide area. Moondust is electrostatically charged and notoriously clingy. (See "Mesmerized by Moondust" from Science@NASA.) Even a small amount of moondust can be a great nuisance: it gets into spacesuit joints and seals, clings to faceplates, and even makes the air smell when it is tramped indoors by moonwalkers. Could meteoroid impacts be a source of lunar "dust storms?" Another question for the future....

Suggs and his team plan to make more observations. "We're contemplating a long-term monitoring program active not only during major meteor showers, but also at times in between. We need to develop software to find these flashes automatically," he continues. "Staring at 4 hours of tape to find a split-second flash can get boring; this is a job for a computer."

With improvements, their system might catch lots of lunar meteors. Says Suggs, "I'm ready for more surprises."
quote:
As far as they know, Suggs and Swift were the only ones who recorded the impact of Nov. 7th—"probably because we were the only ones looking," says Suggs. So, unlike the lunar Leonids of 1999 and 2001, the lunar Taurid of 2005 was not confirmed by a second or third observer.

Nevertheless, "we are 99% sure it was real," says Suggs.

Other possibilities include

a satellite passing in front of the moon, glinting in sunlight;
a cosmic ray hitting the video camera's CCD chip;
a meteor in Earth's atmosphere, directly between Earth and the Moon.
"We don't believe it was a satellite," says Cooke who, together with aerospace engineer Heather McNamara, searched through NORAD's catalogue of 8363 "trackable objects" in Earth orbit. "There was no unclassified satellite or piece of space debris in the right place at the right time to cause the flash."

It couldn't have been a cosmic ray. "We observed the lunar explosion in five consecutive video frames (total time span: 150 msec). A cosmic ray would have caused a flash in only one frame," explains Suggs.


[ Bericht 2% gewijzigd door -CRASH- op 23-12-2005 20:54:00 ]
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pi_33388958
Ik vroeg me zomaar af: heeft global dimming ook invloed op de zichtbaarheid van sterren?

Zou wel lullig zijn
pi_33395650
quote:
Op zondag 25 december 2005 03:22 schreef Kered het volgende:
Ik vroeg me zomaar af: heeft global dimming ook invloed op de zichtbaarheid van sterren?

Zou wel lullig zijn
Als Global Dimming effect heeft op de zon
dan heeft het ook zeker effect op het sterrenlicht.
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pi_33402375
quote:
Op zondag 25 december 2005 15:20 schreef -CRASH- het volgende:

[..]

Als Global Dimming effect heeft op de zon
dan heeft het ook zeker effect op het sterrenlicht.
Tel lichtvervuiling er bij op...
Plus dat de aerosolen, die de global dimming veroorzaken, de lichtvervuiling waarschijnlijk versterken.
Maar zonder global dimming loopt het global warming weer zwaar uit de klauw, maar met global warming krijgen we weer meer opstijgende warme lucht.

Ja mensen, het zijn slechte tijden voor sterrenkijkers op aarde
pi_33407816
quote:
Op vrijdag 23 december 2005 10:55 schreef Quarks het volgende:

[..]

Hubble is niet van hun.
Weet je wel hoeveel het kost om hubble te gebruiken.
[..]
Misschien dat Spitzer goedkoper is?
http://www.spitzer.caltech.edu/
  dinsdag 3 januari 2006 @ 15:49:04 #44
100054 Quarks
little Eiffel! little Eiffel!
pi_33661861
Hemel voor de komende dagen:

3 januari 2006
Vandaag bereiken de Boötiden hun maximum. Deze meteorenzwerm heeft zijn vluchtpunt in het sterrenbeeld Boötes. De waarnemingsomstandigheden zijn gunstig: er is weinig storend maanlicht.

4 januari 2006
Rond 16.00 uur bereikt de aarde het punt van zijn elliptische baan waar de afstand tot de zon het kleinst is: 147.103.625 kilometer - ruim anderhalf procent kleiner dan gemiddeld.

6 januari 2006
Eerste Kwartier (19.56 uur).

8 januari 2006
Vanavond vindt een zeer nauwe samenstand plaats van de ruim half verlichte maan en de planeet Mars, vlak onder de maan. Bekijk het tweetal tussen 20.00 en 21.00 uur, hoog boven de zuidelijke horizon.

9 januari 2006
Vannacht beweegt de maan vlak langs het Zevengesternte, de open sterrenhoop in het sterrenbeeld Stier. Gebruik een verrekijker om de sterrenhoop te zien, linksboven de heldere maan. De kleinste afstand wordt bereikt rond 04.00 uur (10 januari).


12 januari 2006
Jupiter staat vannacht dicht bij de ster Zubenelgenubi in het sterrenbeeld Weegschaal. Kijk 's morgens rond 07.00 uur boven de zuidelijke horizon.

14 januari 2006
De planeet Venus staat vandaag rond 01.00 uur in benedenconjunctie met de zon: hij beweegt tussen de aarde en de zon door, en is dus enige tijd niet zichtbaar.

14 januari 2006
Volle Maan (10.48 uur). De maan bevindt zich vannacht halverwege de sterren Castor en Pollux in het sterrenbeeld Tweelingen en de planeet Saturnus in de Kreeft.

15 januari 2006
's Morgens rond 08.00 uur zie je Saturnus links van de ondergaande maan, in het westen. 's Avonds rond 20.00 uur staat hij rechts van de opkomende maan, laag in het oosten.

17 januari 2006
Samenstand van de maan met de ster Regulus in het sterrenbeeld Leeuw. Kijk 's morgens tussen 06.00 en 08.00 uur, vrij laag in het westzuidwesten.

22 januari 2006
Laatste Kwartier (16.14 uur). De maan staat 's morgens rond 07.00 uur links van de ster Spica in het sterrenbeeld Maagd, vrij laag in het zuiden.

23 januari 2006
Links van de afnemende maan is de heldere planeet Jupiter te zien. Kijk 's morgens rond 07.00 uur in het zuiden.

25 januari 2006
In de ochtendschemering is links van de maan de ster Antares in het sterrenbeeld Schorpioen zichtbaar. Een vrij uitzicht op het zuiden is wel een vereiste.

26 januari 2006
Mercurius staat rond 23.00 uur in bovenconjunctie met de zon. Gezien vanaf de aarde beweegt Mercurius nu min of meer achter de zon langs.

27 januari 2006
Saturnus in oppositie. Rond middernacht (in de nacht van 27 op 28 januari) staat de geringde planeet gezien vanaf de aarde precies tegenover de zon aan de hemel.

29 januari 2006
Nieuwe Maan (15.15 uur).

1 februari 2006
De planeet Saturnus staat vandaag vlak ten zuiden van de Krib, de open sterrenhoop in het sterrenbeeld Kreeft - een prachtig gezicht in een verrekijker.
quote:
De planeten in 2006



Venus, Mars and Saturn light the cold, frosty evenings of winter as the New Year opens up, but 2006 will be hardly a week old when Venus plunges rapidly down into the sunset. Mars, meanwhile, fades into the distance.

As warmer weather approaches, Saturn takes over to dominate the milder evening skies of late winter and early spring, only to be replaced in turn by Jupiter later in the spring and summer. Meanwhile, speedy Mercury will pass in front of the Sun in early November, then joins Mars and Jupiter to form a tight triangle in the dawn skies of early December.

Sound like a busy year for planet watching? Let's take a look at the visibility of each of these worlds during 2006.

MERCURY: Mercury usually appears as a bright "star" with a yellowish or ochre hue. At its best evening apparitions, it can be found almost directly above where the Sun has set, being visible for up to 90 minutes after sundown. As viewed from the Northern Hemisphere, such an opportunity will come between Feb. 10 to March 3. It will also be positioned to the north of a razor-thin crescent Moon on the evening of February 28.

During its best morning apparitions, you'll find it positioned almost directly above where the Sun will rise up to 90 minutes prior to sunup. Such an occasion will come between Nov. 18 to Dec. 9 and it will appear to ride well to the north a slender sliver of a crescent Moon on the morning of November 19. On Nov. 8, a transit of Mercury will take place, with the planet appearing in silhouette as a tiny black dot on the Sun's disk. This event will be visible from the Americas, the Pacific Ocean, Australia, New Zealand and eastern Asia.

VENUS:
Always appears brilliant, and shines with a steady, silvery light. It starts 2006 very low in the west-southwestern evening sky at dusk for the first several days of January. It then passes roughly between the Sun and the Earth (inferior conjunction) on Jan. 13 and makes its transition into the morning sky.

You'll find it during the final week of January, low in the east-southeast sky at the first light of dawn and it will continue to be a prominent morning object right on through the end of August. It will then be hidden again by the bright solar glare almost through the balance of the year. Passing through superior conjunction on Oct. 27, it will then return to the evening sky, though not likely readily visible for most until the waning days of December. During late January and through much of February, it will resemble a beautiful crescent in steadily held binoculars and telescopes.

Venus will reach its greatest brilliancy in the morning sky on Feb. 17. Venus will appear to pass very close to Saturn on the morning of Aug. 27; the planets will appear low to the eastern horizon and separated by only about a half-degree (the apparent width of the Moon).

MARS: Shines like a star with a yellowish-orange hue. This will evolve into an "off year" for Mars, although it will be just coming off a splendid opposition during mid-autumn of 2005. It will appear brightest in 2006 on New Year's Day, still glowing brilliantly at magnitude –0.6 in the constellation of Aries and outshining all the stars in the sky with the exception of Sirius and Canopus. It will then be 72 million miles from Earth, but it will also be receding from us each night thereafter and hence will be getting progressively fainter.

By March 1, it will appear more than 3½ times dimmer and by May 9 it will have fallen into the ranks of a second magnitude object. Mars will pass just over one-half degree from Saturn in the evening sky of June 17. A month later, it is all but gone from view, becoming too deeply immersed in the solar glare to be seen. It will be in conjunction with the Sun on Oct. 23, becoming a morning object. Not until about the middle of December will it emerge from the bright morning twilight.

JUPITER:
will appear as a brilliant "star" with a silver-white luster in the constellation of Libra, the Scales. It will be primarily a late-night/early morning object from January through April.

By May and June it will be visible most of the night and will continue to be a convenient evening object through the end of October. It is at opposition to the Sun on May 4. It will disappear into the Sun's glow in early November and will again become visible in the morning sky during early December.

SATURN: Usually shines like a yellowish-white "star" of moderate brightness. It will be primarily a late-night/early morning object through much of January. By late January into February it will be visible most of the night and will continue to be a convenient evening object through the middle of July. It is at opposition to the Sun on Jan. 27 and will also have two close encounters with other naked-eye planets in 2006.

It will pass just over one-half degree from a much-dimmer Mars on the evening of June 17 and will lie a similar distance from the much-more dazzling Venus on the morning of Aug. 27. Saturn is located within the relatively dim stars of Cancer, the Crab. On February 2 and again on June 5, Saturn will be situated just below the beautiful cluster of stars popularly known as the "Beehive." The famous ring system is visible in telescopes magnifying over 30-power.

From mid-March until the beginning of May, the rings will be tilted at a 20º angle toward Earth. You should take full advantage of this circumstance, because, we won't see the rings tipped 20º or more to our line of sight again until the year 2014!

URANUS: can be spied with the unaided eye under a clear, dark sky. However, it is more easily seen in binoculars. At magnitude +5.7, it is located in Aquarius and is at opposition to the Sun on Sept. 5.

NEPTUNE: is an 8th magnitude object visible in binoculars and in 2006 resides in Capricornus, the Sea Goat. It arrives at opposition on August 11.

PLUTO: the smallest and most distant planet is, at magnitude 14 (about 900 times fainter than the faintest star visible to the unaided eye), the most difficult to observe. You'll need a very dark sky, at least an 8-inch telescope and a finder chart to locate it. In the constellation of Serpens, the Serpent, it's at opposition on June 16.

The Highlight of 2006: A Planet Trio

Jupiter, Mercury and Mars will engage in a most intriguing pre-Christmas gathering, very low in the east-southeast sky during the second week of December. The best time to look will be around 6:30 a.m. local time. Unfortunately, the low altitude, plus this gathering's proximity to the Sun likely will render Mars invisible (or nearly so) to the unaided eye. Binoculars are strongly recommended. In contrast, Mercury and Jupiter should be more readily visible to the eye with only slight difficulty, as they will shine much brighter than Mars.

The trio will be most compact—fitting within just a 1-degree circle—on Dec. 10. On this morning, the three planets will resemble a compact arrowhead pointing west, with Mars at the arrowhead.

There will also be separate conjunctions between Mercury and Mars (Dec. 9), Mercury and Jupiter (Dec. 10) and Mars and Jupiter (Dec. 11). Also, for binocular viewers on the morning of Dec. 10, Mercury will appear to lie very close below and to the right of the second magnitude star Graffias in Scorpius, the Scorpion.
* 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.*
pi_33670946
quote:
Op dinsdag 3 januari 2006 15:49 schreef Quarks het volgende:
Hemel voor de komende dagen:

3 januari 2006
Vandaag bereiken de Boötiden hun maximum. Deze meteorenzwerm heeft zijn vluchtpunt in het sterrenbeeld Boötes. De waarnemingsomstandigheden zijn gunstig: er is weinig storend maanlicht.
En nu de bewolking nog....
<a href="http://www.vwkweb.nl/" rel="nofollow" target="_blank">Vereniging voor weerkunde en klimatologie</a>
<a href="http://www.estofex.org/" rel="nofollow" target="_blank">ESTOFEX</a>
  dinsdag 3 januari 2006 @ 20:17:21 #46
100054 Quarks
little Eiffel! little Eiffel!
pi_33670964
quote:
Op dinsdag 3 januari 2006 20:16 schreef -CRASH- het volgende:

[..]

En nu de bewolking nog....
Inderdaad
* 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.*
pi_33671103
quote:
Op dinsdag 3 januari 2006 20:17 schreef Quarks het volgende:

[..]

Inderdaad
Maar eigenlijk zijn ze al geweest.. Afgelopen nacht.
Maar er kunnen er nog altijd een paar komen.
<a href="http://www.vwkweb.nl/" rel="nofollow" target="_blank">Vereniging voor weerkunde en klimatologie</a>
<a href="http://www.estofex.org/" rel="nofollow" target="_blank">ESTOFEX</a>
  dinsdag 3 januari 2006 @ 22:26:50 #48
38229 kanaiken
Een lieve gezeisde kanaiken
pi_33674883
TVP-tje
Stel dat er geen hypothetische veronderstellingen bestaan.
Is dit een schijnvraag waarin het antwoord al besloten ligt?
>>> Geen referrertje in sigs <<<
  † In Memoriam † woensdag 4 januari 2006 @ 00:34:30 #49
21290 NorthernStar
Insurgent
pi_33679932
quote:
 
Nasa team sees explosion on Moon



Nasa scientists have witnessed a rare explosion on the Moon, caused by a "meteoroid" slamming into it.

The blast was equal in energy to about 70kg of TNT and was seen near the edge of Mare Imbrium (the Sea of Rains).

The object that hit the Moon was probably part of a shower of "taurids" which peppered Earth in late October and early November.

Understanding lunar impacts could help protect astronauts when Nasa sends humans back to the Moon.

Meteoroids are small rocky or metallic objects in orbit around the Sun, or another star. One of the astronomers who observed the impact estimates that it gouged a crater 3m wide and 0.4m deep.

Rob Suggs of Nasa's Marshall Space Flight Center in Huntsville, US, was testing a new 10-in telescope and video camera they assembled to monitor the moon for space strikes.

On 7 November, his first night using the telescope, he observed one.

verder -> BBC
 
De Abu Hafs al-Masri Brigade heeft inmiddels de verantwoordelijkheid opgeist.
  donderdag 5 januari 2006 @ 16:20:02 #50
44470 ErikT
Lekker PSV!
pi_33732841
Ik had er al eerder iets over gepost hier, maar er is nu meer informatie beschikbaar voor komende zomer. De eerste info is online. Ik heb t dus over dat internationale sterrenkunde zomerkamp.
Interesse? Kijk even op http://www.iayc.org/next_camp.php

edit: er is even iets mis, morgen wel weer goed denk ik.

[ Bericht 10% gewijzigd door ErikT op 06-01-2006 12:58:44 ]
Yeah, well, that's just, like, your opinion, man.
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