Viewing Alert: Jupiter May Have Been Impacted by a Fireball
Friday, 14 September 2012
Sunday, 2 September 2012
2013 Karoo Starparty
Foto: 2010, Britstown Star Party
The ASSA Pretoria Centre wants to hold its fifth National Karoo Starparty during the
weekend of 9 to 11 August 2013 about 20 km north of Britstown in the Karoo, right next
to the N12 at the Kambro Padstal. The reason for this locality, apart from the fabulous
Karoo skies, is that it is almost exactly halfway between Gauteng and the Cape Town
area, so we can all drive the same distance to the site. The first event of this type was held
during April 2009 and proved to be a huge success. The Karoo lived up to its reputation
and provided magnificent views to those lucky enough to be present.
More information from: Pretoria branch of the Astronomical Society of South Africa
To book, please book contact Wilma Strauss, the Manager of Kambro, directly at
0833056668 or at e-mail: kambro@albieswireless.co.za
Sunday, 26 August 2012
Neil Armstrong: 1930-2012
Neil Armstrong, the first man to walk on the moon during the 1969 Apollo
11 mission, has died, following complications resulting from
cardiovascular procedures. He was 82.
Armstrong's words "That is one small step for (a) man, one giant leap for mankind," spoken on July 20, 1969, as he became the first person ever to step onto another planetary body, instantly became a part of history.
Source: NASA
Read more...
Armstrong's words "That is one small step for (a) man, one giant leap for mankind," spoken on July 20, 1969, as he became the first person ever to step onto another planetary body, instantly became a part of history.
Source: NASA
Read more...
Thursday, 16 August 2012
Comet C/2011 L4 (PANSTARRS) in Southern Sky
Source: Copyright © 2012 by Leonid Elenin (Russia)
Images of PANSTARRS acquired by Leonid Elenin on 2012 July 14 (left) and August 9 (right).
Skytools 3 Information
On this night (18 August 2012) C/2011 L4 (PANSTARRS) is best visible between 18:53 and 21:40, with the optimum view at 19:15. Look for it in Libra, high in the sky in complete darkness. It is detectable visually in the Orion SkyQuest XT10 Dob. Use the Ultima 42mm for optimum visual detection. It is magnitude 10 with a diameter of 4.8'.
In the following 30 days this object is detectable visually from August 19-26, and again from September 2 on, with the best view coming on September 17. During this period it will brighten slowly and move lower in the sky.
C/2011 L4 (PANSTARRS) will reach perihelion in early March 2013. It also is predicted to reach maximum brightness of magnitude -3 in early March. The best visibility from Bloemfontein, Boyden, ZA near maximum brightness is predicted to be in early March when it will be approximately magnitude -3. At that time it will be in Pisces, very low in the western sky during evening twilight and will be obvious in the Orion SkyQuest XT10 Dob. Note that the magnitude and visibility of a comet can be very unpredictable.
In the following 30 days this object is detectable visually from August 19-26, and again from September 2 on, with the best view coming on September 17. During this period it will brighten slowly and move lower in the sky.
C/2011 L4 (PANSTARRS) will reach perihelion in early March 2013. It also is predicted to reach maximum brightness of magnitude -3 in early March. The best visibility from Bloemfontein, Boyden, ZA near maximum brightness is predicted to be in early March when it will be approximately magnitude -3. At that time it will be in Pisces, very low in the western sky during evening twilight and will be obvious in the Orion SkyQuest XT10 Dob. Note that the magnitude and visibility of a comet can be very unpredictable.
Visible in Libra - 18 August 2012
Links fo more information:
- Comet Chasing in August (Skyhound, Skytools 3)
- C/2011 L4 (PANSTARRS)
- New comet may be visible to the naked eye in 2013
Sunday, 12 August 2012
Tuesday, 7 August 2012
NASA's Curiosity Rover Caught in the Act of Landing
NASA's Curiosity rover and its parachute
were spotted by NASA's Mars Reconnaissance Orbiter as Curiosity
descended to the surface on Aug. 5 PDT (Aug. 6 EDT). Image credit:
NASA/JPL-Caltech/Univ. of Arizona
PASADENA, Calif. – An image from the High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance orbiter captured the Curiosity rover still connected to its 51-foot-wide (almost 16 meter) parachute as it descended towards its landing site at Gale Crater.
"If HiRISE took the image one second before or one second after, we probably would be looking at an empty Martian landscape," said Sarah Milkovich, HiRISE investigation scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "When you consider that we have been working on this sequence since March and had to upload commands to the spacecraft about 72 hours prior to the image being taken, you begin to realize how challenging this picture was to obtain."
The image of Curiosity on its parachute can be found at: http://www.nasa.gov/mission_pages/msl/multimedia/pia15978b.html
The image was taken while MRO was 211 miles (340 kilometers) away from the parachuting rover. Curiosity and its rocket-propelled backpack, contained within the conical-shaped back shell, had yet to be deployed. At the time, Curiosity was about two miles (three kilometers) above the Martian surface.
"Guess you could consider us the closest thing to paparazzi on Mars," said Milkovich. "We definitely caught NASA's newest celebrity in the act."
PASADENA, Calif. – An image from the High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance orbiter captured the Curiosity rover still connected to its 51-foot-wide (almost 16 meter) parachute as it descended towards its landing site at Gale Crater.
"If HiRISE took the image one second before or one second after, we probably would be looking at an empty Martian landscape," said Sarah Milkovich, HiRISE investigation scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "When you consider that we have been working on this sequence since March and had to upload commands to the spacecraft about 72 hours prior to the image being taken, you begin to realize how challenging this picture was to obtain."
The image of Curiosity on its parachute can be found at: http://www.nasa.gov/mission_pages/msl/multimedia/pia15978b.html
The image was taken while MRO was 211 miles (340 kilometers) away from the parachuting rover. Curiosity and its rocket-propelled backpack, contained within the conical-shaped back shell, had yet to be deployed. At the time, Curiosity was about two miles (three kilometers) above the Martian surface.
"Guess you could consider us the closest thing to paparazzi on Mars," said Milkovich. "We definitely caught NASA's newest celebrity in the act."
Monday, 6 August 2012
NASA's Curiosity rover has landed on Mars!
Firtst Image from Curiosity
Mon, 06 Aug
2012 07:32:54 AM GMT+0200
NASA's most advanced Mars rover, Curiosity, has landed on the Red
Planet. The one-ton rover, hanging by ropes from a rocket backpack,
touched down onto Mars early Monday EDT to end a 36-week flight and
begin a two-year investigation.
President Obama said the landing "will stand as a point of national pride far into the future."
President Obama said the landing "will stand as a point of national pride far into the future."
Wednesday, 1 August 2012
Boyden Observatory Open Evening - 4 August 2012
Dr. Brian van Soelen - Explaining the SKA
Telescope…
National Science Week 2012
Boyden Observatory Open Evening
4 August 2012
18h30 for 19:00
18h30 for 19:00
18:30: Observing with the 13-inch telescope - Saturn
19:00: Presentation on SKA: Dr. Brian van Soelen - Explaining the SKA Telescope…
19:45 Observing through telescopes weather permitting
Informal outdoor presentation
19:00: Presentation on SKA: Dr. Brian van Soelen - Explaining the SKA Telescope…
19:45 Observing through telescopes weather permitting
Informal outdoor presentation
Refreshments for sale
Proposed donation: R 30 per car
Booking essential: Yolandie Fick: (051) 401 9751 FickY@ufs.ac.za
Presented by: Friends of Boyden Observatory and the en die Amateur Astronomy Society
Booking essential: Yolandie Fick: (051) 401 9751 FickY@ufs.ac.za
Presented by: Friends of Boyden Observatory and the en die Amateur Astronomy Society
Nasionale Wetenskapweek 2012
Boyden Sterrewag Ope-aand
04 Augustus 2012,
18h30 vir / for 19:00
18h30 vir / for 19:00
18:30: Waarneming deur 13-duim teleskoop - Saturnus
19:00: Presentation on SKA: Dr. Brian van Soelen - Explaining the SKA Telescope…
19:45: Waarnemings deur teleskope indien die weer dit toelaat.
Informele buite-aanbieding
19:00: Presentation on SKA: Dr. Brian van Soelen - Explaining the SKA Telescope…
19:45: Waarnemings deur teleskope indien die weer dit toelaat.
Informele buite-aanbieding
Verversings te koop
Voorgestelde donasie: R 30 per motor
Bespreking noodsaaklik
Yolandie Fick: (051) 401 9751 FickY@ufs.ac.za
Bespreking noodsaaklik
Yolandie Fick: (051) 401 9751 FickY@ufs.ac.za
Aangebied deur: Vriende van Boyden Sterrewag en die Amateur
Sterrekunde Vereniging
Tuesday, 31 July 2012
Sunday, 29 July 2012
Astronomy Books at a Bargain Price!
Bargain Books opened in Bloemfontein, Preller Square and these bargain price books are on the shelve.
Alson in Welkom: Goldfields Mall
Alson in Welkom: Goldfields Mall
Astronomica (R199)
- A Coffee Table book with a foreword by Sir Patrick Moore, 524 Pages packed with information.
Publication Date: 2007 Reprinted 2010
Written in an engaging and accessible format, Astronomica is an invaluable reference book. There are comprehensive profils of each of the planets in our Solar System, the dwarf planets, the major stars, and other astronomical bodies. The galaxies - including the Milky Way - are examined. The history of cosmology focuses on the advances that have been made through the centuries, up to the latest in cutting-edge technology. The chapter on space exploration discusses early program development, historical milestones, current ventures, the role of space stations, and the long-distance spacecraft sent out to the far reaches of the Solar System and beyond. Successful sky-watching is covered, with detailed charts of each of the 88 recognized constellations, helpful monthly sky charts, and information on equipment. Discover all you need to know about the cosmos and its fascinating features. Stunning photographs (including dual page fold-outs), detailed charts and illustrations, fact files, and timelines enhance the descriptive and informative text, as Astronomica brings the cosmic world within easy reach. (Source: Amazon)
The Practical Astronomer
Publication Date: May 17, 2010
For anyone who's ever looked at the night sky and wanted to know more about the galaxy around them, The Practical Astronomer shows readers how to discover and understand the mysteries of the solar system and beyond. Illustrated throughout with detailed photographs and illustrations, and using clear, easy-to-follow text, The Practical Astronomer takes you on a step-by-step journey from the basics of what can be seen with the naked eye, to how you can view more distant objects such as the planets of the solar system, and even galaxies far, far away-all in your own backyard. Source: Amazon
The Practical Skywatcher's Handbook. by David H. Levy, John O'Byrne
Publication Date: January 1, 2012
This practical, hands-on guide is the sailor's essential atlas of the sky. Assuming no prior knowledge, this comprehensive, practical handbook helps the user at sea or on land read and understand the changing sky. Readers are given hands-on advice on how to read the night sky and star charts, as well as information on whether particular stars can be seen with the naked eye or require binoculars or a telescope. At the core of the book are 150 sky charts, showing what features can be seen in each position and when. Every constellation in the northern and southern hemisphere is mapped out. Simple methods are given for finding the biggest, brightest stars and then identifying other lesser stars by their relative position. For sailors out of the sight of land, celestial navigation really comes into its own - providing a sure means of checking the boat's position even when GPS and other electronics malfunction. This book will provide a complete reference as to what stars and constellations they should be able to use when and where in the world. The Practical Skywatcher's Handbook is ideal for anyone, on land or sea, wanting a complete guide to the night sky. Source: Amazon
Sunday, 22 July 2012
UFS101 Astronomy Fair in Bloemfontein
Click to enlarge
Maklik `n duisend Vrystaters het die Sterrekundefees by die Universiteit van die Vrystaat in Bloemfontein bygewoon. Hier kyk van die toeskouers hoe vuurpyle gelanseer word.
Thursday, 19 July 2012
UFS101 ASTRONOMY FAIR - 21 July 2012 | UFS101 STERREKUNDEFEES - 21 Julie 2012
UFS101 ASTRONOMY FAIR
UFS101 and the Bloemfontein Centre of the Astronomical Society of Southern Africa (ASSA) are joining forces to bring you the First-ever Astronomy Fair on University of the Free State Campus. This will be held in the Callie Human on the 21 July 2012 from 10:00-13:00 at the UFS.
You are invited to:
· Observe the sun through a specially equipped telescope;
· Witness the launching of Demo Rockets;
· See exhibits explaining how astronomy and other sciences interact
· Hear the latest news about SKA-South Africa and astronomy developments in Bloemfontein
· Explore the latest astronomy applications for your iPhone/ iPad
The entrance is free and you are welcome to bring the whole family. There will be tuckshop facilities available.
PROGRAMME FOR 21 JULY
Time
|
Activity
|
Venue
|
09:30 -10:15
|
Presentation: Higgs Bozon and other invisible things in the universe by Prof. Hoffman
|
Badminton Hall
|
10:00 - 13:00
|
(08:30 Building of Rockets)
10:00 Expo
12:00 Launching of Rockets
|
Callie Human
|
UFS101 STERREKUNDEFEES
UFS101 en die Bloemfontein Sentrum van die Astronomical Society of Southern Africa (ASSA) span saam om die eerste Astronomy Fair op die Universiteit van die Vrystaat kampus aantebied. Dit sal op 21 Julie 2012 om 10:00- 13:00 in die Callie Human Sentrumvan die UV gehou word.
U word uitgenooi om:
· Na die son deur 'n spesiaal toegeruste teleskoop te kyk;
· Die lansering van demonstrasie vuurpyle te aanskou;
· Uitstallings te sien wat die interaksie tussen astronomie en die ander wetenskappe verduidelik;
· Die jongste nuus oor die SKA-SuidAfrika en astronomie verwikkelinge in Bloemfontein te hoor.
· Die jongste astronomie toepassings (apps) vir jou iPhone/iPad te verken.
Toegang is gratis en u is welkom om die hele gesin saam te bring. Daar sal ook 'n snoepwinkel beskikbaar wees.
PROGRAM VIR 21 JULY
Tyd
|
Aktiwiteit
|
Plek
|
09:30 -10:15
|
Aanbieding: Higgs Bozon en ander onsigbare dinge in die heelal deur Prof. Hoffman
|
Pluimbalsaal
|
10:00 - 13:00
|
(08:30 Bou van vuurpyle)
10:00 Uitstalling
12:00 Lansering van vuurpyle
|
Callie Human
|
--
____________________________
Bloemfontein Sterrekundevereniging
Bloemfontein Astronomy Society*
*Blog*: assabfn.blogspot.com
*Web*: www.assabfn.co.za
**
- As jy nie e-posse van ons wil ontvang nie, kan jy `n e-pos aan
assabfn@gmail.com stuur en vra om van die adreslys verwyder te word.
- If you do not want to receive emails from us, please send an email to
assabfn@gmail.com and ask to be removed from the address list.
Monday, 16 July 2012
Winners of the IceInSpace Calendar Competition
Winner: Solar Eclipse. Annular Eclipse over Texas by Bob Adams, with 69.52% of the vote.
After running the IceInSpace Calendar Competition during
May and June, over 250 images were submitted and after a record breaking 950+
votes by the extended IceInSpace Community, the winning images have now been
chosen by you!
- View the winning images: http://goo.gl/RX5Z4
Your IceInSpace Astronomy Calendar 2013 will be on sale
in the IceInSpace Shop from early August. Then you can buy plenty of calendars
for yourself, your family and friends, work colleagues etc :)
Congrats to all winners and thanks to the IceInSpace
Community for your part in making this competition a success.
- Visit the IceInSpace Forum and join them!
Astronomy Fair | Sterrekundefees
Sterrekundefees - 21 Julie 2012
UFS101 en die Bloemfontein Sentrum van die
Astronomie Vereniging van Suider-Afrika
(AVSA / ASSA) span saam om die eerste Sterrekundefees op die Hoofkampus van die Universiteit van die Vrystaat aan te bied.
(AVSA / ASSA) span saam om die eerste Sterrekundefees op die Hoofkampus van die Universiteit van die Vrystaat aan te bied.
Dit sal op 21 Julie 2012 van
9:30 vm. tot 1 nm. in die Callie Human Sentrum van die UV gehou word.
U word uitgenooi om:
· Na
die son deur ‘n spesiaal toegeruste teleskoop te kyk;
· Na
die lansering van demo-vuurpyle te kyk;
· Uitstallings
te sien wat die interaksie tussen astronomie en die ander wetenskappe uitbeeld;
· Die
jongste nuus oor die SKA Suid-Afrika en astronomie verwikkelinge in
Bloemfontein te hoor;
· Die
jongste astronomie toepassings (apps) vir jou iPhone/iPad te verken.
Toegang is gratis en u is welkom om die hele gesin saam
te bring. Daar sal ook ‘n snoepwinkel beskikbaar wees.
Om 9:30 - 10:15 sal Prof. Matie Hoffman ‘n lesing
aanbied oor Die Higgs Boson en ander
onsigbare dinge in die Heelal.
|
…………………………………………………
Astronomy Fair - 21 July
UFS101 and the Bloemfontein Centre of the
Astronomical Society of Southern Africa (ASSA) are joining forces to bring you
the First-ever Astronomy Fair on University of the Free State Main
Campus.
This will be held in the Callie
Human on the 21 July 2012 from 10:00-13:00 at the UFS.
You are invited to:
· Observe
the sun through a specially equipped telescope;
· Witness
the launching of Demo Rockets;
· See
exhibits explaining how astronomy and other sciences interact;
· Hear
the latest news about SKA South Africa and astronomy developments in
Bloemfontein;
· Explore
the latest astronomy applications (apps) for your iPhone/ iPad.
The entrance is free and you are
welcome to bring the whole family. There will be tuck shop facilities
available.
At 9:30 - 10:15 Prof. Matie Hoffman will do a
presentation on The Higgs Boson and other invisible things in the
universe.
|
Saturday, 14 July 2012
Venus, Jupiter and the Moon are gathering in our early morning skies
Image: Stellarium 15 July 2012
(Click to Enlarge)
(Click to Enlarge)
Venus is now our very bright "morning star" over in the east, before sunrise.
Jupiter is the not-quite-as-bright one a little higher, to the left of Venus. The fainter reddish one now above Venus is Aldebaran, eye of Taurus the Bull, and over to the right of all this is Orion.
This weekend, the waning crescent Moon moves down through Taurus. Look on:
- Saturday morning - Moon, Jupiter, Venus in (almost) a straight line
- Sunday morning - Moon just below Jupiter
- Monday morning - Jupiter, Venus and the Moon in a triangle
- Tuesday morning - last look at the old crescent, in a big triangle with Venus and Betelgeuse (shoulder of Orion).
A map of all this is at www.planetarium.co.za
The Moon will re-appear in the early evening skies as a thin crescent over in the west on July 20th, marking the start of the Islamic month of Ramadhan. Look out for earthshine on the crescent.
Big Sunspot 1520 Releases X1.4 Class Flare
Huge sunspot AR1520, located front and center in the Sun's
southern hemisphere, has released an X1.4 class flare.
Tuesday, 3 July 2012
Monday, 25 June 2012
Neville Young's Books - Astronomy Within Reach - and Sterrekunde Binne Bereik
Available in English and Afrikaans
Neville Young, a long time member of the Pretoria Astronomical Centre for 25 years, who over the years at star gazing evenings and even when viewing two solar eclipses, and a Venus transit, makes use of the occasion to talk to the public.
For this purpose he designed a solar system model which he uses to explain "on the ground" what can be seen.
To hear "Oh now I understand" has been for him very rewarding and to then watch his audience moving to the telescopes to see the real thing, gives him a feeling of accomplishment.
On these occasions he has been asked the same questions over and over and being as well read as he is, has been able to explain things like "What happened to Pluto?" - the path of the Southern Cross - how Jupiter's moons move and can be seen, even with binoculars - in ways that are both informative and entertaining.
When LAPA Publishers asked him to write a book on astronomy for the layman, his audience suddenly became so much larger. Astronomy Within Reach has been written to answer these questions and many more that will lead to an understanding of the subject. Neville has spent hours drawing many of his own diagrams and researching the answers, before committing them to paper.
See the attached flyer for more information.
This book is new on the market and has been translated into Afrikaans.
Astronomy Within Reach and Sterrekunde Binne Bereik are now available from Neville and at the various outlets.
To purchase the book from Neville please see either
where you will find details of how to make your purchase.
In addition to the book Neville is selling on his website, the portable solar system model he has used for so long.This he has produced for use in education and for demonstration purposes. He has other educational aids which he has developed and which are referred to in the book and explained on his website www.starwaders.com Please contact us for any further information Jen Els Sales & Marketing - Starwaders "Education for Astronomy" jen@starwaders.com 012 804 5843 083 701 7681 |
Sunday, 10 June 2012
Canon 60Da: Second improved Astro DSLR available
Source: Sky & Telescope (July 2012)
CANON’S RETURN Canon has announced the successor to its long-discontinued 20Da, a DSLR optimized specifi cally for astrophotography. The new Canon EOS 60Da ($1,499) features an 18-megapixel APS-C detector with roughly 4-micron-square pixels and an improved infraredblocking
fi lter that transmits up to three times more hydrogen-alpha light than other Canon DSLR cameras. This modifi cation enables users to record the reddish hydrogen-alpha nebulosity prevalent in the night sky.
The camera incorporates enhanced noise reduction and increased ISO speeds up to 6400, expandable to 12,800. Additional features include a 3-inch fl ip-out vari-angle LCD screen for easy viewing when attached to a telescope. The EOS 60Da’s Live View mode is equipped with Canon’s silent-shooting feature that eliminates shutter-induced vibration. Each purchase includes an AC adapter kit, rechargeable battery, and RA-E3 Remote Controller adapter.
Canon USA
Available through select dealers
www.usa.canon.com
CANON’S RETURN Canon has announced the successor to its long-discontinued 20Da, a DSLR optimized specifi cally for astrophotography. The new Canon EOS 60Da ($1,499) features an 18-megapixel APS-C detector with roughly 4-micron-square pixels and an improved infraredblocking
fi lter that transmits up to three times more hydrogen-alpha light than other Canon DSLR cameras. This modifi cation enables users to record the reddish hydrogen-alpha nebulosity prevalent in the night sky.
The camera incorporates enhanced noise reduction and increased ISO speeds up to 6400, expandable to 12,800. Additional features include a 3-inch fl ip-out vari-angle LCD screen for easy viewing when attached to a telescope. The EOS 60Da’s Live View mode is equipped with Canon’s silent-shooting feature that eliminates shutter-induced vibration. Each purchase includes an AC adapter kit, rechargeable battery, and RA-E3 Remote Controller adapter.
Canon USA
Available through select dealers
www.usa.canon.com
Tuesday, 5 June 2012
Venus transits the sun Bloemfontein 2004
Information: Venus transits the
sun. Prof. Matie Hoffman (right) and Hannes Calitz, observer at Boyden
Observatory (both from the Department of Physics, University of the Free State)
are watching the transit of Venus in front of the sun closely with the “sun
telescope” (20 cm Celeostat Solar Telescope). Notice the small black
circle (Venus) close to Prof. Hoffman’s cap, in front of the mammoth sun.
Date: 8 June 2004
Time: Place: Boyden Observatory
Equipment: Nikon F3 (Film); 50mm f1.8
lens.
Technique: Negatives were scanned and
image was finalised in Photoshop
Transit of Venus - Bloemfontein 2004
Date: 8 June 2004
Place: Boyden Observatory
Time: 06:30 – 14:00
Equipment: Nikon F3 (Film),
600mm mirror lens; 2X Converter.
Technique: Red filter. Also
without filter. ND filter was used to reduce light.Image Processing: Negatives were
scanned and digital images was finalised in Photoshop
Photographer: Hannes Pieterse
Information: Transit of Venus. Nobody alive today has seen a
transit of Venus in front of the sun. The
last transit was in 1882.
Sun's
disk. During a transit, Venus can be seen from Earth as a
small black disk moving across the face of the Sun. The duration of such
transits is usually measured in hours (the transit of 2004 lasted six hours). A
transit is similar to a solar eclipse by the Moon, but, although the
diameter of Venus is almost 4 times that of the Moon, Venus appears much
smaller because it is much farther away from Earth. Before the space age,
observations of transits of Venus helped scientists use the parallax
method to calculate the distance between the Sun and the Earth.
Transits
of Venus are among the rarest of predictable astronomical phenomena and
currently occur in a pattern that repeats every 243 years, with pairs of
transits eight years apart separated by long gaps of 121.5 years and 105.5
years. Before 2004, the last pair of transits were in December 1874 and
December 1882. The first of a pair of transits of Venus in the beginning of the
21st century took place on June 8, 2004
(see Transit of Venus, 2004) and the next will be on
June 6,
2012 (see Transit of Venus, 2012). After 2012, the next
transits of Venus will be in December 2117 and December 2125.
A
transit of Venus can be safely observed by taking the same precautions as when
observing the partial phases of a solar eclipse.
Staring at the brilliant disk of the Sun (the photosphere)
with the unprotected eye can quickly cause serious and often permanent eye
damage. (Wikipedia information)
Sunday, 3 June 2012
Saturday, 26 May 2012
ISS - Space X, Dragon makes historic space station dock
by Staff Writers
Washington (AFP) May 25, 2012
SpaceX on Friday became the first commercial outfit to send its own cargo capsule to the International Space Station, heralding the start of a new era for private spaceflight.
The berthing marked the climax of the California-based company's demonstration mission to become the first to restore US access to the space outpost after NASA retired the three-decade shuttle program last year.
With no humans on board, the Dragon capsule is delivering about a half ton of supplies and science experiments for the ISS, and aims to return a slightly larger load of gear to Earth on May 31.
More...
SpaceX on Friday became the first commercial outfit to send its own cargo capsule to the International Space Station, heralding the start of a new era for private spaceflight.
The berthing marked the climax of the California-based company's demonstration mission to become the first to restore US access to the space outpost after NASA retired the three-decade shuttle program last year.
With no humans on board, the Dragon capsule is delivering about a half ton of supplies and science experiments for the ISS, and aims to return a slightly larger load of gear to Earth on May 31.
More...
SA to host majority of SKA project
Source: News 24
World's Largest Radio Telescope to Be Shared by South Africa, Australia
Johannesburg - Two thirds of Square Kilometre Array
(SKA) antennae technologies will be built in Africa, said Science and
Technology Minister Naledi Pandor at a press conference on Friday.
Two thirds of antennae technologies will be built in Africa and a third in Australia and New Zealand, she said.
Pandor said the decision to share was unexpected but SA accepts it in the name of progress.
"This may seem like a compromise, but SA is getting the majority of the project," said Professor Justin Jonas, SKA Africa's associate director for science and engineering.
"We should be proud!"
More,,,
Two thirds of antennae technologies will be built in Africa and a third in Australia and New Zealand, she said.
Pandor said the decision to share was unexpected but SA accepts it in the name of progress.
"This may seem like a compromise, but SA is getting the majority of the project," said Professor Justin Jonas, SKA Africa's associate director for science and engineering.
"We should be proud!"
More,,,
Monday, 21 May 2012
Sunday, 20 May 2012
Transit of Venus - 5/6 June 2012
Click to enlarge image
- Visit the Website
- Local transit times (No! Bloemfontein is not in the deal! )
What is a transit of Venus?
When Venus passes directly between earth and the sun, we see the distant planet as a small dot gliding slowly across the face of the sun. Historically, this rare alignment is how we measured the size of our solar system.
When is it?
The next transit of Venus occurs June 5 or 6, 2012, depending on your location. Observers in North America see it the evening of June 5. This will be the last transit of Venus to occur in your lifetime.
What should I do?
Mark your calendar. Plan your observing location and eye safety. Tell friends. Download and support the ToV phone app. Enjoy the rare sight!
Venus Transformed
VENUS
TRANSFORMED: Something special
is happening to Venus in the evening sky. The second
planet is diving toward the sun for a much-anticipated
transit on June 5-6. As Venus turns its night
side toward Earth, the planet is transforming into
a beautifully slender and colorful crescent:
John Chumack of Dayton, Ohio, took
the picture on May 14th using a 10-inch telescope.
"I was blown away by the sight of Venus,"
he says. "The planet was 14% illuminated, 47
arcseconds in diameter, and blazing at -4.43 magnitude."
The crescent shape of Venus is easy
to see in good binoculars or small
telescopes. No special observing experience
is required. Just find Venus in the western sky
after sunset (you can't miss it), point and look.
A good tripod to hold the optics steady is recommended.
As the evening wears on and Venus
sinks toward the horizon, the refractive effect
of Earth's atmosphere splits the crescent into the
colors of the rainbow. Kevin R. Witman of Cochranville,
Pennsylvania, observed the phenomenon on May 11th:
"Earth's atmospheric refraction of Venus's
ample light made a
beautiful image through my 10-inch telescope."
More images: from
Mark Marquette of Boones Creek, Tennessee; from
Philippe Vanden Doorn of Rixensart, Belgium; from
Luis Argerich of Buenos Aires, Argentina; from
Tomasz Gołombek of Tczew, Poland; from
Francesc Pruneda of Palamós, Catalonia (Spain);
from
Sadegh Ghomizadeh of Tehran, Iran;
Sourc: Spaceweather
Sourc: Spaceweather
Sunday, 13 May 2012
First announcement: ASSA Symposium 2012
ASSA is pleased to announce this year's symposium, which will be held from 12 to 14 October 2012 at the South African Astronomical Observatory in Cape Town.
The theme of the symposium, "Looking back, looking forward", reflects the significance of 2012. On the one hand, organised amateur astronomy turns 100 this year, which will be duly celebrated at the symposium. On the other hand, hopefully by October a decision on the Square Kilometre Array will have been made. So the symposium focusses on past and future of astronomy alike.
Participants of the symposium will have the opportunity to engage in some outreach activities on 12 October. The symposium itself will start officially with a welcome evening on that day. Talks and workshops will take place throughout 13 and 14 October. In the evening of 13 October there will be a special Open Night commemorating 100 years of amateur astronomy in Southern Africa.
Online registration will be possible from 1 June, but you may submit abstracts for proposed talks before that by sending an email to symposium2012@assa.saao.ac.
The symposium website is at http://assa.saao.ac.za/
The organisers of the ASSA Symposium 2012 are looking forward to welcoming you in Cape Town!
Friday, 11 May 2012
Saturday, 5 May 2012
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