Wednesday, December 28, 2011
Friday, December 9, 2011
On this occasion, Nepal Astronomical Society (NASO) in collaboration with Nepal Academy of Science and Technology (NAST) would like to organize following events at NAST on Saturday, December 10, 2011:
1. Talk programme: 4pm-5pm
2. TLE Observation programme: 5pm-11pm
All the eclipse enthusiasts are cordially invited to attend the program. Wish you all a happy Dhanya Purnima and Yomori Punye :)
Wednesday, December 7, 2011
As the second and last of two total lunar eclipses in 2011, the total lunar eclipse occurring on 10 December is posed to enthrall eclipse-enthusiasts from central and eastern Asia, Australia, New Zealand, Alaska and northern Canada. The first total lunar eclipse was observed on 15 June this year. The eclipse’s total phase would last for meager fifty one minutes. Its faint penumbral shadow would begin to cover moon at 17:16 hours local time. The dark umbral phase would touch the moon at 18:30 hours. The moon would enter into totality at 19:51 hours and would arrive at the maximum phase of the greatest eclipse at 20:17 hours. The umbral eclipse magnitude would reach 1.11 at this stage. The totality end at 20:43 hours and the umbral shade would recede from the moon fully at 22:03 hours. The entire eclipse would be finally over at 23:16 hours.
How can you do Lunar eclipse observation?
They are safe to watch with naked eyes. Unlike solar eclipse, which can only be gazed briefly from any specific place, a lunar eclipse can be perceived for several hours. It could provide enthralling targets for avid photographers as well.
How does eclipse occur?
A lunar eclipse takes place when the Sun, earth and moon are all perfectly aligned with the earth sitting in the middle of Sun and moon. When the moon passes behind earth, the Sun's rays are blocked from striking the moon. This can only happen when the moon is full and the moon is near or at the descending or ascending nodes (two points of intersection between the planes of moon’s orbit with that of earth’s path around Sun). This time the moon is at the descending node that lies in eastern region of zodiacal constellation Taurus (bull) four days after apogee (moon’s furthest point from earth).
Types of lunar eclipse
Astronomers recognize three basic types of lunar eclipses. In penumbral lunar eclipse the moon passes through earth's penumbral shadow. These events are of only academic interest because they are subtle and hard to perceive. In partial lunar eclipse a portion of the moon passes through earth's umbral shadow and can be admired easily with unaided eye. At total lunar eclipse the entire moon steeps into perplexing earth's umbral shadow of vibrant red color.
Why does not the lunar eclipse happen each month?
Even though the moon orbits earth every 29.5 days and lunar eclipses occur at full moon, lunar eclipses do not happen every month during full moon. It is because the moon's orbit around earth is inclined sparsely five degrees to earth's trajectory around Sun. There are two points (ascending or descending nodes) where the lunar path intersects earth’s track. Since earth's shadows lie exactly in the same plane, during full moon, our natural satellite usually passes above or below earth's shadows and misses them completely. No eclipse takes place. When two to four times each year, moon finds itself at or near the nodes to pass through some portion of the earth's penumbral or umbral shadows, one of the three types of eclipses can be witnessed. Everyone on the night side of earth can see lunar eclipse. Thirty five percent of all eclipses are of the penumbral nature. Another thirty percent are partial eclipses. Around thirty five percent are fascinating total eclipses.
Future Total Lunar Eclipse
Though 2012 and 2013 are devoid of total lunar eclipses, they could be relished in 2014, 2015, 2018, 2019 and 2021.
For further information, contact: 015000114 (Mobile: 9851024673, 9841388524)
Friday, November 18, 2011
A short talk on introductory astronomy was given to school children by Jean Luc, Sudeep Neupane and Suresh Bhattarai before the observation.
Thursday, November 17, 2011
Title: Astronomy and Astrophotography
Time: 16:00 - 17:00 hrs
Audience: Citizens of Globe who want to celebrate 50th anniversary year of first human in space
|Mr Sudeep Neupane welcoming the guest|
|Dr Rishi Shah and Jean luck at the discussion session of the programme interacting with audience|
Title: Landscape Astrophotography
Date: Nov 3 2011
Time: 16:00 - 17: 00 hrs
Audience: Journalists and astronomy enthusiastic people
Time: 12:00 to 13:00 hours
Participants: Undergrad student from science faculty
Sunday, November 6, 2011
Tuesday, October 25, 2011
Saturday, October 22, 2011
Thursday, October 20, 2011
Watch for the Orionids between midnight and dawn
As usual, the best time to watch the Orionid meteor shower will be between the hours of midnight and dawn. Keep in mind that the moon is waning – or getting smaller by the day. You'll see a smaller moon on Saturday morning than on Friday morning, for example. It's possible that will mean you'll see more meteors on Saturday morning, but, as always, you never know.
You might see some meteors on either side of the peak mornings, too, or during this week leading up to the peak.
Although we hear lots of reports from people who see meteor showers from yards, decks, streets and especially highways in and around cities, the best place to watch a meteor shower is always in the country.
Where do I look to see the Orionids?
Meteors in annual showers are named for the point in our sky from which they appear to radiate. The radiant point for the Orionids is in the direction of the constellation Orion the Hunter. Hence the name is Orionids.
If you trace the paths of these Orionid meteors backward, they do seem to stream from the constellation Orion. But you don't need to know this constellation to see the meteors. The meteors often don't become visible until they are 30 degrees or so from their radiant point – and remember, they are streaking out from the radiant in all directions. So the meteors will appear in all parts of the sky.
That's why it's best to find a wide-open viewing area than to look in any particular direction. Sometimes friends like to watch together, facing different directions. When somebody sees one, they can call out "Meteor!"
How many Orionid meteors will I see?
The word shower might give you the idea of a rain shower. But few meteor showers resemble showers of rain.
Orionid meteors are known to be fast and usually on the faint side. But the Orionids can sometimes surprise you with an exceptionally bright meteor – one that would be visible, even in moonlight – that might break up into fragments.
For many meteor observers … even one meteor can be a thrill. But you might want to observe for an hour or more, and in that case the trick is to find a place to observe in the country. Bring along a blanket or lawn chair and lie back comfortably while gazing upward.
What are meteors?
Meteors are fancifully called shooting stars. They aren't really stars. They're space debris burning up in the Earth's atmosphere.
The Orionid meteors are debris left behind by Comet Halley. The object at left isn't a meteor. It's that most famous of all comets – Comet Halley – which last visited Earth in 1986. This comet leaves debris in its wake that strikes Earth's atmosphere most fully around October 20-22, while Earth intersects the comet's orbit, as it does every year at this time.
Particles shed by the comet slam into our upper atmosphere, where they vaporize at some 100 kilometers – 60 miles – above the Earth's surface.
The Orionids are extremely fast meteors, plummeting into the Earth's atmosphere at about 66 kilometers – 41 miles – per second. Maybe half of the Orionid meteors leave persistent trains – ionized gas trails that last for a few seconds after the meteor itself has gone.
After the programme there had been arranged a meeting with Principal of Celebration Co-Ed to discuss about the further requirements and possibilities of student projects. NASO Vice President Mr. Sudeep Neupane had also joined the meeting.
“Project Paridhi – measure the earth again” is a new collaborative works along the citizen scientists of Pakistan, Kazakhstan, Sri Lanka, Bhutan, China, Nepal and Russia .
Thursday, September 22, 2011
There have been followers of "Flat earth" theory and it used to be quite big number which it still is in some of the so called "flat earth societies". They believed that the world lived on a flat disk and one can drop into depths of sky when they venture out of the edge!!
This autumnal equinox, Nepal Astronomical Society (NASO) is collaborating with SPACE-India, Delhi which has devised this simple yet very powerful and important experiment as an international citizen science project to measure the size of the earth with shadows measurements – “Project Paridhi – measure the earth again” as a new collaborative works along the citizen scientists of Pakistan, Kazakhstan, Sri Lanka, Bhutan, China, Nepal and Russia .
Under this project students will replicate and in fact take actual measurements of the shadows made by sun to gather the size of earth and its shape as done 2300 years back by astronomer Eratosthenes. This project involves reading of shadows at local noon by pair of teams on the same longitude on the globe. Our experiments from Kathmandu will align with the citizen scientists of Patna and Bhubaneswor of India that fall almost with one degree of longitude and readings taken at the same time from these cities can tell us about the size and shape of the earth.
The observation base will be extended to global arena by next winter solstice in December 2011. This project is a showcase for proving that science can be best learnt by doing.
If you are interested to join us for this exciting experiments, find us at:
Venue: Celebration Co-Ed School (http://thecelebration.edu.np/)
Address: Jorpati, Narayantar, Kathmandu, Nepal
Date: Friday, September 23, 2011
Time: 09:00-14:00 Hrs
Contact: +977-01-4910332 or +977-9841485867 (if needed)
Please be there at 08:45 Hrs, Friday, September 23, 2011 if you want to participate in the experiment. For more info on this project please visit http://www.space-india.org/spaceindiaorg/paridhi/
Lets celebrate this autumnal equinox in a different way at Celebration Co-Ed School!
Friday, August 5, 2011
A full-day excursion to the Thai National Observatory, home of the 2.4-m optical telescope and to the Princess Sirindhorn Neutron Monitor in Doi Inthanon National Park, was organized as part of the conference programme.A joint event, Astro-Expo 2011, to commemorate His Majesty the King's 84th Birthday in the year 2011, was also be organized.
Nepal presented four contributions ( 3 oral and one poster) during the meeting. The name of the four delegates from Nepal were Rishi Shah,Sudeep Neupane, Suresh Bhattarai and Riwaj Pokhrel.
Friday, July 15, 2011
Thursday, June 16, 2011
Through the observation from Kathmandu failed due to rain, Observers at other end had enjoyed the moments. "It was amazing to observe the moon passing deeply in the shadow of the Earth with in hrs,more interestingly to see the changes in the colour of the moon with orange to red and to black" explained Mr. Milan Rai, president of Nepali Association for Astronomical Mission(NAAM)
As we know that our solar system is a family of planets and their satellites which revolving around the sun on their orbit, so some time they come between a straight line while revolving around the sun. When the earth comes between the sun and the moon and they all are in straight path,the earth obstruct the light reaching to the moon causing shadow on it is known as lunar eclipse. Mr Rai further added, "In Birgunj the moon observation night was started from 8:00pm to the morning 7:00 am. According to local time ,the partial eclipse was begain at 12:04 a.m and total eclipse was begain at 1:06 a.m and total eclipse ends at 2:45 a.m morning at birgunj. After on wards we couldn’t recored the phases of eclipse of cloudy weather".
See you on in December, 2011!!!
Tuesday, June 14, 2011
For us, the eclipse will begin at 11:08 PM local time when the moon enters the faint portion (penumbra) of the earth’s shadow. At about an hour later at 00:08 AM after midnight the moons begins to slide into the inky part of the shadow of earth (umbra). Although the penumbra would be slightly discerned, the umbra will be fully visible to eyes when the moon becomes deeply ruddy dark till 03:48 AM in the morning. The total lunar eclipse becomes then obviously evident, when moon is immersed fully into murky umbral shadow of earth from 01:07 AM to 02:47 AM (for 100 minutes). Weather permitting eclipse-chasers could notice the dark and then the light shadow leaving the moon and thus ending the total lunar eclipse at 04:48 AM few hours before the dawn. The moon rises at 06:40 PM on 15 June 2011, while it sets at 05:20 AM in the next morning. The sunrise and sunset on 15 June are at 05:08 AM and 07:01PM respectively. The Sun rises at 05:08 AM and sets at 07:01 PM in the evening on 16 June 2011.
The total length of this lunar eclipse would measure to about five hours and fourty minutes. As the full moon would glide through the middle of umbra, the total lunar eclipse phase would last unusually long for about one hundred minutes just shy of seven minutes for it to become the absolute maximum total lunar eclipse. The moon is approximately 372 thousand kilometers away during the eclipse.
Consequently this total lunar eclipse is relatively long after the ones that have happened before on 16 July 1935 (totality lasting for 101 minutes), 06 July 1982 (totality lasting for 107 minutes) and 16 July 2000 (totality lasting for 107 minutes). The next total lunar eclipse of such lengthy duration will take place on 27 July 2018 with totality lasting for 106 minutes. The moon is moving from zodiacal constellation Scorpius (Brishak) towards Sagittarius (Dhanu) passing predominantly through the constellation Ophiuchus (Bhujak Dhari) during the various phases of the eclipse. The Sun is in zodiacal constellation Taurus (Brish) on 15 June.
The next normal total lunar eclipse can be witnessed on 10 December 2011 by us. The last such total eclipse was visible on 04 March 2007 from Kathmandu.
Lunar eclipses occur only at full moon. Furthermore, the average inclination of lunar orbit to the ecliptic plane is five degrees. However, at every full moon we do not experience eclipse, mainly because the orbit of the moon is inclined in relation to the plane in which earth travels around the Sun and intersect at two points called descending (Ketu) and ascending (Rahu) nodes. The eclipse occurs when the moon appears near or at these nodal points. The orbit of our moon around the earth is completed in approximately 27.3 days. The sunlight with longer wavelengths (red) after passing through earth’s atmosphere that has reached the moon contributes to the faint reddish glow on moon even when moon is totally eclipsed.
Such regular cosmic spectacle caused by celestial movements of the Sun, earth and its moon have had enthralled but also frightened people from different cultures and triggered superstitious beliefs that had even started battles with tragic consequences. However, we would request the eclipse-watchers to enjoy and understand this marvelous celestial event without any kind of fear.
Nepal Astronomical Society (NASO),P.O.Box: 3459, Ekantakuna, Lalitpur, Nepal,
Monday, May 2, 2011
Friday, April 29, 2011
Group photo of the meeting
After the meeting, NASO executives visited Cape of Good Hope and Cape of Aghulas. Cape of Aghulas is know as southern tip of Africa.
Sunday, April 3, 2011
Thursday, March 31, 2011
Wednesday, March 30, 2011
Photo 1: Dr. Rishi Shah, addressing the meeting
At the meeting, H.E. Sergey Velechkin, Ambassador of Russian Federation in Nepal and Co-chair of the organizing committee shared his memorable moments with the legendary cosmonout Yuri Gagarin.
The committee, incorporated with eminent personalities in sceince and technology in Nepal, will be organizing various events for a whole year 2011. Dr. Rishi Shah, Academician-NAST, President-Nepal Astronomical Society(NASO), has introduced the programme proposal for the year of celebration as a collaborative work between RCSC and NASO.
Photo 2: Participants of the meeting posing for the group photo.
Mr.Stanislav Simakov, Direcctor of RCSC, Counselor of the Russian Embassy and member secretary of Organizing Committee emphasize the need of collaborative wofks among the exsiting organizations working in the field of science and technology.
The further programmes will be officially announced on April 13, 2011 by the organizing committee!
Thursday, March 24, 2011
Sunday, March 20, 2011
March 20 2011 NASO had a wonderful meeting with NASA SOLAR SYSTEM JPL Ambassador Joan Chamberlin from Maine, US. During the meet, we had bilateral discussion for the development of society through astronomy and space science and the cooperation for future.