Friday, 10 July 2009

Totsiens Sonvlek 1024!

GOOD-BYE SUNSPOT 1024: The biggest, most active sunspot in two years is about to disappear. Sunspot 1024 is approaching the sun's western limb and, later today, it will go around the bend. Pavol Rapavy sends this photo from Rimavska Sobota, Slovakia.

Readers with solar telescopes should train their optics on the edge of the sun. Even minor eruptions from sunspot 1024 could hurl photogenic blobs of hot plasma high over the limb where they would shine in beautiful relief against the black of space beyond. The parting shots could be the best of all.


Thursday, 9 July 2009

Gratis sagteware

Final release of RegiStax 5

Vir die ouens wat Registax gebruik om prentjies op mekaar te maak is daar goeie nuus.

Die nuwe verbeterde Registax 5 se finale weergawe is vroeër beikend gestel. Dit is gratis sagteware en jy kan die hier aflaai:
DeepSkyStacker 3.3.0
Ander gratis sagteware
  • Laai hier af.
    Sommiges is gratis, ander is 30 dae en daar is ook wat te koop is. Kliek bo aan die blad op "Software" en volg die skakels volgens jou behoefte.

Kokerboom-sterrewag op Springbok

Al die astrogeeks wat iewers in Namakwaland gaan blomme kyk, kan gerus by Kokerboom-sterrewag op Springbok `n draai gaan maak.

  • Blog: Klik hier
  • Artikel in Kontrei (Volksblad): Klik hier
  • Laai dokument met meer inligting af (398kb): Klik hier
    (Wees geduldig)

  • Francois de Jager De Jager se kontakinligting:
    Sel: 072-199-7615 of
    epos: francois.dejager@telkomsa.net

    Gratis sterkaarte vir waarnemers

    Gaan kyk bietjie na hierdie hoë kwaliteit sterkaarte wat José Ramón Torres and Casey Skelton op hulle webtuiste gratis beskikbaar maak.

    The TRIATLAS Second Edition

    - 3 full MAIN DEEP SKY ATLASES up to 9, 11 and 13 magnitude

    - 2 standard-alone COMPLEMENTARY EDITIONS

    As daar belangstelling is sal ek die sterkaarte ook op die Astronomy DVD beskikbaar maak. Laat weet asseblief voor ek begin aflaai.

    Die grootte van al die lêers is so 945 megagrepe, as jy self wil inspring en aflaai.
    Elke kaart is `n hoë kwaliteit pdf.

    Monday, 6 July 2009

    Onverwagse sonvlek nou sigbaar

    Waarskuwing: Moenie met jou blote oog na die son kyk nie. Ook nie met `n verkyker of teleskoop wat nie met die nodige sonfilters toegerus is nie!

    Gaan loer op die veilige manier na hierdie sonvlek by www.spaceweather.com of kliek hier

    Inligting verkry van Spaceweather.com:

    SUDDEN SUNSPOT:
    What a difference 48 hours can make. Only two days ago the sun was blank and calm, displaying the sort of unrelenting quiet we've come to expect from the deepest solar minimum in a century. Then, with startling rapidity, sunspot 1024 burst onto the scene: movie. Unlike other recent "sun-specks", this active region is a full-fledged sunspot group with more than a dozen planet-sized dark cores, crackling with B- and C-class solar flares.

    "Sunspot 1024 is putting on a spectacular show," says amateur astronomer David Tyler of Buckinghamshire UK, who caught it in mid-flare on July 5th.

    Kyk aanlyn wanneer Hubble en die ISS in jou omgewing sigbaar is!


    Hier is `n nuttige aanlynprogram om te bepaal wanneer die Hubble-teleskoop en die Internasionale ruimtestasie in jou omgewing gaan sigbaar wees.

    Volg die eenvoudig instruksies op die skerm en gou word `n lys van tye op die skerm uitgespoeg. Al wat jy moet kies is jou land, provinsie en dorp. Nie te moeilik nie. Maak vir jou `n uitdruk en gaan soek hom!

    Let op die am en pm vir soggens en saans.

    Sunday, 5 July 2009

    Ask the Astronomer

    Besoek gerus hierdie webblad. Baie van jou vrae oor sterrekunde sal beantwoord word. Kliek op die verskillende afdelings. Dit gaan jou vir ure besig hou.
    Hier is 'n voorbeeld van 'n vraag met `n antwoord.

    How many meteors enter the Earth's atmosphere every day?

    Lots!

    In a recent article in the journal Nature, March 28, 1996 vol. 380, page 323, Dr.s A.D. Taylor, W. J. Baggaley and D. I. Street at the University of Adelaide in Australia discuss the results of their 1 year radar monitoring of incoming meteors. When meteorites slam into the atmosphere, they produce ionization in the atmosphere. Radar echos from this momentary ionization allow the velocity, altitude and distance to be determined if you have two or more such installations for triangulation. The AMOR radar in New Zealand was used for a year in this fashion to detect 350,000 faint echos from very small meteorites with sizes between 10 - 100 microns. This works out to nearly 1000 every day, just from this site alone! Over 1508 of these meteorites ( 0.9 percent) were found to be traveling at speeds up to several hundred kilometers per second!

    On any given day, the estimates are than the Earth intercepts about 19,000 meteorites weighing over 3.5 ounces, every year of which fewer than 10 are ever recovered. About 2800 meteorites are in museums from previous 'falls' and are chemically found to represent about 20 or so distinct parent-bodies. The Earth acquires about 100 tons per day of dust-sized micro- meteoroids.

    Wednesday, 1 July 2009

    Device Makes Radio Waves Travel Faster Than Light

    Written by Nancy Atkinson

    A scientist has created a gadget that can make radio waves travel faster than light. Einstein predicted that particles and information can't travel faster than the speed of light, but phenomena like radio waves are a different story, said John Singleton, who works at the Los Alamos National Laboratory.

    Read more

    Mach 1 can be quite visual.


    What Supersonic Looks Like

    The breaking of the sound barrier is not just an audible phenomenon. As a new picture from the U.S. military shows, Mach 1 can be quite visual.

    This widely circulated new photo shows a Air Force F-22 Raptor aircraft participating in an exercise in the Gulf of Alaska June 22, 2009 as it executes a supersonic flyby over the flight deck of the aircraft carrier USS John C. Stennis.

    Read more...

    Tuesday, 23 June 2009

    35 000 mense wag langste dag in by Stonehenge

    35 000 mense het die langste dag by Stonehenge op Salisbury-plein buite Londen ingewag. In Suid Afrika was die 21ste Junie die kortste dag.

    Hopelik is doer onder in die Suide niemand in hegtenis geneem vir onbehoorlike gedrag nie.

    Die Daily Mirror in Londen (kliek hier om berig te lees) berig dat net 37 mense in hegtenis geneem is vir kleiner oortredings.

    • Kliek op die foto om te vergroot.

      Groete
      Hannes Pieterse