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Total Solar Eclipse 2009, Varanasi and Sasaram

In a season when most Eclipse chase sites in India were washed out, the Bohemians had a blast with both sites at Varanasi and Sasaram getting to see totality. We consider ourself extremely fortunate to having witnessed natures most simple but spectacular event inspite of the threat of looming monsoons. My sympathies with all those who got clouded or rained out

Anindya’s Photo Gallery
Vidur’s Photo Gallery
Nikhils’s Photo Gallery
Mayank’s Photo Gallery
Himanshu Rastogi’s Photo Gallery

Varanasi Group Photos
Sasaram Group Photos

WATCH THE VIDEO of TOTALITY from VARANASI

Eclipse Report from Varanasi-By Vishnu Rethinam
Eclipse Report from Sasaram-By Raghu Kalra
Eclipse Report from Varanasi-PDF Snapshot
Diamond Ring Animation
Pitfalls of an Eclipse Flight. Lessons Learnt

How to make a pinhole projector to safely view the solar eclipse

Materials:

Dark-colored plastic cup
Wax/butter paper
Scissors
Rubber band
Pushpin
a shuttle cork cardboard box (both sides open)
To Do:

Use the pushpin to punch a hole in the center of the cup’s bottom. Cut out a piece of wax paper slightly larger than the cup’s mouth. Stretch this paper across the mouth of the cup. Use a rubber band to secure the paper.
now insert the cup inside the shuttle cork box with the bottom of the cup outside and the side with wax/butter paper inside (see that no light enters from the cup side and there is complete darkness if you see through the other side)
now point the pinhole towards the sun you will see a small dot forming on the butter paper that is the disk of the sun as the eclipse proceeds the sun starts forming a crescent phase

PS NEVER LOOK DIRECTLY TO THE SUN IT DOES NOT MAKE A DIFFERENCE IF ECLIPSE IS ON OR NOT !!!

Sun Earth Day March 20th 2009

Sun Earth Day 2009- Our Sun Yours to Discover is just 2 weeks away!
We have again been working hard to bring a webcast that is suitable
for all ages and all audiences. This is a brief outline of what the webcast will contain:

For each mission and discovery there will be great visualizations to keep things exciting!

During the webcast, scientists Eric Christian, Nicky Fox, Terry Kucera and Sten Odenwald will share discoveries about the sun, while students monitor the sun and prepare their own space weather forecast.

  • We begin with safe use of the telescope
  • Welcome and introduction of students who will be monitoringthe Sun during the webcast. Questions will be asked about their progress during the webcast.
  • A look at history-Galileo
  • Hinode satellite discoveries, followed by a Q and A session
    live from Goddard Space Flight Center, Jet Propulsion Laboratory and Adler Planetarium

  • SoHO and STEREO discoveries
  • Q and A- Goddard Space Flight Center, Jet Propulsion Laboratory and Adler Planetarium
  • THEMIS discoveries
  • TIMED/POLAR imagery, Magnetosphere, Van Allen radiation belts
  • Q and A- Goddard Space Flight Center, Jet Propulsion
    Laboratory and Adler Planetarium

  • Voyager and IBEX discoveries
  • Q and A- Goddard Space Flight Center, Jet Propulsion
    Laboratory and Adler Planetarium

  • SDO to be discovered
  • Q and A- Goddard Space Flight Center, Jet Propulsion
    Laboratory and Adler Planetarium

  • Space Weather Report by students at the Space Weather Action Center

    We will begin the webcast at 1:00 EDT -1 hour

    You can connect to the webcast from several different links and the
    NASA Education channel at 1:00 live, (re-run 3:30 and 6:00 EDT)

    This is featured on the Sun Earth Day website; http://sunearthday.nasa.gov

    With web links to the following or go directly to:

    NASA Education channel is also streamed:
    http://www.nasa.gov/multimedia/nasatv/index.html?param=education
    And it is easy enough to click to, from NASA Home portal page, click
    NASA TV (live), next window select Education Channel.
    And
    http://dln.nasa.gov/dln/content/webcast/index.jsp

    Elaine Lewis
    Senior Science & Educational Curriculum Coordinator
    Goddard Space Flight Center

  • The Solar Eclipse: Facts, Fiction and Pregnant Women



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    India is a land of great diversity, culture, colors, beliefs and science. It makes us proud citizens when we see India send a spacecraft to the moon, or when India’s best brains do us proud and make a name for themselves in the world of academia and research. Unfortunately we also have some of the worst habits regarding the simple things in life like a solar eclipse
    Through time immemorial humans have created thousands of legends and tales about the origins of an eclipse. Note that we are talking about theories put forward in an age when the world was flat and if you go too far away from land, you might fall off the edge!

    Digressing a bit…..I wonder that it actually might be plausable that Indians took that saying too seriously and in a display of valor never left the shores of the country.

    There were several beliefs that were held about an eclipse. The clear winner amongst that was

    Pregnant Women should not go outdoors during an eclipse

    Amazingly this is also a common superstition…a.k.a “belief” among some Hispanic communities as well. Many Latin American women frequently wear bright red panties / fasten a safety pin under their shirt over the belly, so than the child would not be born with a cleft lip! This practice dates to the Mayan culture who believed that to ward off the “hidden” energy released during an eclipse, women had to wear a red string around their waist with a arrowhead attached to it

    I think bad habits transcend all barriers and we in India seem to have caught up with them too… only we have more bizzare and obscure explanations

    Here are some of the ingenious things we thought up

    1-there is a ‘punya kala’ when the Surya Grahan is visible. And people should observe fasting during this period. If the Grahan is not visible in the particular region, there is no ‘punya kala’ and there are no restriction.

    I was thinking again, we typically are a very lazy civilization and we find great excuses not to report to work. Imagine this….you go to work late, and tell your boss that it was all the eclipse’s fault!.. simply brilliant

    2- Dont eat, FAST, STARVE, DON’T FEED THE POOR!!!!!

    Sure tell that to the pregnant woman as well! (note for the dimwits, That was a sarcastic comment, for heaven’s sake please do not attempt to do that at home)

    3- Chant This or that mantra, call your astrologer to decide your stock options and the times of the day you are allowed to use the bathroom etc.

    This might just be a proverb used by astrologers

    “Make money while the sun doesn’t shine”


    Totality shadow on the Earth. Picture Aug 11 1999 taken from the Mir Space Station. That spot is about 100 Km wide

    It’s only a Shadow

    For those people who think that the eclipse is something mystical, let me tell you once again it’s only a SHADOW. An educated friend of mine had a hard time getting this fact sink into him! How unlucky can a shadow be? Are you afraid of your own shadow?

    The list of things not to do is just endless and unfortunately people do take it seriously. There is tons of websites online that are feeding this kind of superstition without any remorse, projecting their claims as if they were disseminating the most intelligent facts ever! Even educated people tend to think that if there is an eclipse, stay inside “Just in case” it is true.

    Let me assure you that only evil things attributed to a solar eclipse, scientifically plausible are

    – Retinal/corneal burns if you stare at the sun without proper protection, which you know you shouldn’t be doing
    – cannot get a sun tan
    – cannot read a newspaper without a light bulb
    – solar panels stop working temporarily
    – you fall off your house’s roof and break some bones because you were mesmerized by the beauty of totality. Pregnant women should also be wary of this and use appropriate caution

    But there are good things that can happen too
    – You have a new decorative shape of the sun during the partial phase
    – Your air conditioning bill comes out slightly lower that usual because of some respite from the sun in Delhi’s heat
    – You have something interesting to start a conversation with a stranger
    – Nerdy guys can ask nerdy girls out on a date to watch the eclipse together!
    – You can sound intellectual to your peers by pretending to actually know everything about the eclipse
    – Most importantly you can put astrologers out of work, make them find a real job

    On a serious note, a solar eclipse is a beautiful treat to the eyes and should not be missed. Thousands of people travel great distances across continents to chase totality, wherever it makes landfall. On July 22nd 2009, totality comes to India. So go out, take your family out with you, including pregnant women and enjoy the show

    See also
    Arguments against astrology – N.Rathnasree
    TSE 2009 AAAD Page
    TSE 1995 Images taken by AAAD members

    Aug 1 2008 TSE LIVE WEBCAST

    Greetings Everybody.

    Since we’re not getting a glimpse of totality here in Delhi, aaadelhi.org will try to Syndicate a webcast from LIVE from Novosibirsk, Russia. You can also check out the syndicated video webstream links from University of North Dakota, Grand Forks team in China. Webcast from Novosibirsk is scheduled to begin on Aug 10 2008, 0900 UTC 1430 IST

    Syndicated Content
    VIDEO STREAM 1 (Univ N.Dakota from China) CLICK HERE
    VIDEO STREAM 2 (Univ N.Dakota from China) CLICK HERE
    VIDEO STREAM 3 (Multicast) (Univ N.Dakota from China) CLICK HERE

    External Webcast Links
    Exploratorium TSE 2008: Live Form China


    Click for Novosibirsk, Russia Forecast


    Click for Xi'An, Shaanxi Forecast

    Updates:

    • 0422 EST, Streams from China seem to work, they’ve gone off temporarily
    • 0438 EST, Link 1 from UND is up….We can see a solar disc….i wonder what ppl in Russia are doing. First contact at 1009UTC
    • 0445 EST,Clouds in Shaanxi in China look ominous! GULP!
    • 0458 EST,Coverage from Novosibirsk hasn’t started yet….i wonder if Murphy’s Law is at play!
    • 0551 EST,Clouds are looking bad in Xi’an, I’m keeping my fingers crossed
    • 0631 EST,Exploratarium has great video feeds, Mylar and H-alpha images galore…plus no clouds!
    • 0638 EST, Hoooray, ND has a feed, clouds giving wayto a solar disc..!!!!!….too bad we missed the 1st contact at 1026 UTC
    • 0708 EST, Totality in Xinjiang,China….People go Nuts…including me!!!!! :)))))
    • 0722 EST, Totality in Xian,China….North Dakota People manage to screw up the feed during totality….i lose the whole recording… 🙁
    • Well folks, now since the best part is over, I leave it to my faithful computer to record the remaining feed from Xinjiang

      Time to hit the sack folks!
      This is the end of our LIVE commentary

    LIVE CHAT
    This Webcast has Ended ! Thanks for visiting

    Monsoon Eclipse: Aug 1 2008

    In recent times most of the eclipses have been visible with a very small fraction of the Sun being seen as eclipsed, from India. The last total solar eclipse from India had not been too happy an experience, with most of the totality belt having been clouded out during the eclipse. We now have the eclipses of 2008 and 2009, also falling in the monsoon season, and will therefore need to gear up and scan Indian Geography and its monsoon vagaries very carefully, to decide where we are going to be, to observe the 2009 Total Solar Eclipse.


    Photo Courtesy: Ajay Talwar

    The August 1st 2008 Total Solar Eclipse will be seen as a partial eclipse from India, so perhaps people might not travel to different locations in India, for this eclipse, and will more likely want to know what are the chances from their home location, of viewing this eclipse. Before we discuss anything else, it is very important to emphasise that viewing the eclipse with naked eyes would be very dangerous for the eyes. Viewing the Sun through a telescope or a binoculars without a proper filter is many times more dangerous – do not ever do that, it could destroy your eyesight. The safest way of viewing a partial solar eclipse is through the method of projection. Let us now, look at the circumstances of the August 1st 2008 eclipse, for different locations in India. We may be missing the totality of this eclipse, but, the northern parts of India do get to see a large fraction of the disc of the Sun eclipsed.

    In this figure, adapted from http://eclipse.gsfc.nasa.gov/SEpath/SEpath2001/SE2008Aug01Tpath.html
    The path of totality is marked in dark blue, and passes well to the North of India. The dark green lines indicate regions where the eclipse will start at the times indicated. These timings are in Universal Time (UT) to which we need to add 5.5 hours to obtain the Indian Standard Time. The light blue lines are contours of constant Eclipse Magnitude.




    The Eclipse Fraction is defined as the fractional diameter of the Sun eclipsed, at the maximum of eclipse at any given point. The southern parts of the country will see between 20 -40 % eclipse fraction, the central regions between 40-60 % while the Northern parts of the country see between 60-70 eclipse fraction, at maximum, during the 2008 eclipse. There is another way of looking at a partial eclipse – through a quantity known as the Obscuration Fraction. The obscuration fraction is the fractional area of the disk of the Sun covered by the disk of the Moon. For Delhi, for instance, the eclipse magnitude is 62.26 % while the maximum obscuration fraction is 53.7 %. Using the box projection apparatus mentioned above, and by projecting an image of the Sun on to a graph sheet and photographing that image, one can make some estimates of the obscuration fraction as the eclipse progresses from beginning to end and check them against known theoretical values. Try it, it is great fun!
    Here is a graph of the measured obscuration fraction of the eclipse of March 2006, compared with theoretical values. The measurement and comparisons were done by members of the Amateur Astronomers Association, Delhi, at an eclipse skywatch organized at the Nehru Planetarium, New Delhi.

    The binocular/pinhole box projection apparatus can also be used to measure the relative angular diameter of the Sun and the Moon, using simple school geometry. To learn how to make a simple pinhole camera click here http://www.aaadelhi.org/node/7 This is an exciting activity to do, if we are located in the partial zones of a total or an annular eclipse. With such a measurement we can discern whether the eclipse is total or annular, in the central belt, even if we are situated far from the central belt. A kind of a celestial ventriloquism that we can practice 🙂

    We might also be able to measure the position angle of the first contact point, with such an apparatus, if there is a sunspot visible on the day of the eclipse. The First contact is the very beginning of the eclipse as the first dent or a miniscule bite appears to have been taken out of the Sun – the first external tangency between the Moon and the Sun, as seen from a given location. The position angle of this contact point is defined as the contact angle measured counter-clockwise from the north point of the Sun’s disk.

    There, we are all set, if we manage to do this carefully and obtain our East-West and North-South axis on our projected image that we capture just at first contact, we should be able to pull out the position angle of the first contact reasonably accurately.
    So, go ahead and make your binocular box projection apparatus, or a simple projection apparatus for a telescope with a stand, and enjoy watching the eclipse safely. Be sure to do a little something quantitative, with measurement of some eclipse related parameters, to enhance your enjoyment of the eclipse! And look ahead, to the July 22nd 2009 Total Solar eclipse in India.

    Some Tips on Solar Safety can be found on this page
    http://www.aaadelhi.org/?q=node/6

    Penned by Dr N Rathnasree, This article also appears in a Forthcoming issue of Krittika

    TOTAL SOLAR ECLIPSE JULY 22nd 2009

    Total Solar Eclipse 2009, Amateur Astronomers Association Delhi

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    Mark your calendars folks, its surya-grahana time in India again. Come July 2009 the moon will eclipse the sun as seen from India, Bhutan,Bangladesh,China, Japan and the Marshall Islands. Its going to be the longest solar eclipse for over a century and guess what, this time the path of totality passes through India. This eclipse pass over India comes after almost a decade. The last two eclipses happened in 1999 and 1995.

    Totality

    The eclipse begins on the 22nd of July 2009 at around 5:30 am IST in India and spends almost two hours passing the subcontinent. The path of totality will pass through central India passing over Surat, Ujjain, Baroda, Bhopal, Patna, Darjeeling, and Dibrugarh in the far east. Rest assured the Bohemians will be out there somewhere chasing the eclipse.!!!!



    Click to Enlarge

    Circumstances of the Eclipse
    For a full list of Eclipse circumstances CLICK HERE

    Eclipse Safety : Observing Eclipse Do”s and Don”ts

    warning Before we go on I must warn you to NEVER EVER look at the sun especially the PARTIAL PHASE through unprotected eyes or homebrewn filtering mechanisms.

    The use of homebrewn filters is recommended to seasoned astronomers only who understand the risks involved! There are however very simple ways to observe an eclipse without putting your eyes in harm”s way

    One of the simplest method to observe the sun safely is through a pinhole projection camera. This can be used for viewing the partial phases of the eclipse. During totality however, it is perfectly safe to watch the eclipse naked eye.

    To learn how to make a pinhole camera CLICK HERE

    Alternatively you may use a solar filter
    solar filters

    The first thing you must remember is that the human eye has no nerve endings, so if you burn your retina, it will not hurt. 😛 , which is all the more reason that caution is advised while observing the sun

    It is never safe to look at a partial or annular eclipse, or the partial phases of a total solar eclipse, without the proper equipment and techniques. Even when 99% of the Sun”s surface (the photosphere) is obscured during the partial phases of a solar eclipse. This is primarily because nearing totality the ambient light levels become so less that our pupils dilate and the iris tries to allow in more light into the eye.

    During the partial phase any surge in sunlight, like the one seen during a diamond ring formation can cause excessive solar radiation entering the eye and causing a burn on the retina.


    In spite of these precautions, the total phase of an eclipse can and should be viewed without any filters whatsoever. The naked eye view of totality is not only completely safe, it is truly breathtaking

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    UPDATES

    Update: May 29d 2009
    AAAD Observation Plans

    Update: March 3rd 2009
    The Solar Eclipse: Facts, Fiction and Pregnant Women
    Update: March 2nd 2009
    Average Cloud Cover along the Central Line of the Eclipse