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Sunday, November 28, 2010

Online Planetariums and Sky Charts

When its a cloudy night and wrong season to see your favorite star , you might want to quickly look at a computer software's which emulates the sky. The 1st software I had seen back in my college days was CyberSky. Since then it has added so many futures that I can not even imagine. Since then I had never checked this because I got some alternative open source software like  Open Universe and Celestia. Both were pretty good but were little but heavy  because of their focus on 3D simulation of all the celestial objects.

Later when my interest switched from fun watching planetary animations to serious stargazing and watching clusters and comets I picked up software specialist in in sky-watching like  stellarium and Cartes-du-Ceil.

However there are few websites  which delivers interactive sky maps right in your browser.

1. worldwidetelescope [Needs Microsoft Silverlight ]

2. Google Sky (Google Earth is better )

3. neave planetarium

4. Sky and Telescope [Java applet]

5. Astro Viewer [Java Applet]

6. sky-map.org [Google Sky like interface]

7.Sky View Cafe [Java applet ]

Online Planetariums and Sky Charts

When its a cloudy night and wrong season to see your favorite star , you might want to quickly look at a computer software's which emulates the sky. The 1st software I had seen back in my college days was CyberSky. Since then it has added so many futures that I can not even imagine. Since then I had never checked this because I got some alternative open source software like  Open Universe and Celestia. Both were pretty good but were little but heavy  because of their focus on 3D simulation of all the celestial objects.

Later when my interest switched from fun watching planetary animations to serious stargazing and watching clusters and comets I picked up software specialist in in sky-watching like  stellarium and Cartes-du-Ceil.

However there are few websites  which delivers interactive sky maps right in your browser.

1. worldwidetelescope [Needs Microsoft Silverlight ]

2. Google Sky (Google Earth is better )

3. neave planetarium

4. Sky and Telescope [Java applet]

5. Astro Viewer [Java Applet]

6. sky-map.org [Google Sky like interface]

7.Sky View Cafe [Java applet ]

Wednesday, November 24, 2010

The November Sky

November is about to end but here is a quick summery of the night sky from hubblesite.org.

Paul Neave has designed an awesome interactive sky map. This is one of the wonderful creations of his.

The November Sky

November is about to end but here is a quick summery of the night sky from hubblesite.org.

Paul Neave has designed an awesome interactive sky map. This is one of the wonderful creations of his.

Wednesday, November 17, 2010

Its “The time of the year” again

Exactly a couple of years back I posted http://neilghosh.com/2008/11/15/significance-of-birthday/ saying about the reason why Birthdays does not really have anything to to your behavior.

Recently I spotted two very important objects in the sky with my new Celestron 15x70 Binoculars. Even though these are supposed to be visible in naked eye in a very dark sky I had to use Binoculars just to avoid urban glare/pollution of Hi-Tech City  Hyderabad. Presence half moon also added to the hindrance.

TIP: If you can find thus pentagon of the constellation of Pisces  and then locate the trapizium of stars situated at the south east of it.
Uranus at the mid way now a days .Also Jupiter is nearby .

First object was relatively very close to earth among all object we see in sky.It was +5.79 magnitude planet Uranus, the penultimate planet from the Sun about 20 astronomical units away from earth.1 AU is the distance between the Earth and the Sun .It was little difficult to spot in the sky without a map.I used the software Cartes du Ciel in the night mode (red screen ) to locate Uranus. Jupiter was close to it which was dominating the sky after moon.Using the chart I could sport the greenish looking planet easily.

 

Now It was turn for Andromeda  Galaxy M31.This was also very easy to spot as it is situated between the Andromeda constellation and Cassiopeia's head. Advantages of binoculars is that you can see the neighboring starts together in the same view so that you can locate the target relative to them. Telescopes cover so little space in sky at a time that some times it is not suitable for spotting object without detail guide.The Galaxy was of magnitude +3.50 and could have been seen easily with naked eyes in very dark sky.This is the only object outside our own galaxy (Milky way ) that we can see via naked eyes. This is also our neighboring galaxy 2.5 million light years away.Basically we see a snapshot of this galaxy which was taken  2.5 million years ago from now.

Also I managed to see Jupiter’s Moons Callisto , Europa , Ganymede through the binoculars , Interestingly the JAVA IDE Eclipse’s versions are named after them .

Its “The time of the year” again

Exactly a couple of years back I posted http://neilghosh.com/2008/11/15/significance-of-birthday/ saying about the reason why Birthdays does not really have anything to to your behavior.

Recently I spotted two very important objects in the sky with my new Celestron 15x70 Binoculars. Even though these are supposed to be visible in naked eye in a very dark sky I had to use Binoculars just to avoid urban glare/pollution of Hi-Tech City  Hyderabad. Presence half moon also added to the hindrance.

TIP: If you can find thus pentagon of the constellation of Pisces  and then locate the trapizium of stars situated at the south east of it.
Uranus at the mid way now a days .Also Jupiter is nearby .

First object was relatively very close to earth among all object we see in sky.It was +5.79 magnitude planet Uranus, the penultimate planet from the Sun about 20 astronomical units away from earth.1 AU is the distance between the Earth and the Sun .It was little difficult to spot in the sky without a map.I used the software Cartes du Ciel in the night mode (red screen ) to locate Uranus. Jupiter was close to it which was dominating the sky after moon.Using the chart I could sport the greenish looking planet easily.

 

Now It was turn for Andromeda  Galaxy M31.This was also very easy to spot as it is situated between the Andromeda constellation and Cassiopeia's head. Advantages of binoculars is that you can see the neighboring starts together in the same view so that you can locate the target relative to them. Telescopes cover so little space in sky at a time that some times it is not suitable for spotting object without detail guide.The Galaxy was of magnitude +3.50 and could have been seen easily with naked eyes in very dark sky.This is the only object outside our own galaxy (Milky way ) that we can see via naked eyes. This is also our neighboring galaxy 2.5 million light years away.Basically we see a snapshot of this galaxy which was taken  2.5 million years ago from now.

Also I managed to see Jupiter’s Moons Callisto , Europa , Ganymede through the binoculars , Interestingly the JAVA IDE Eclipse’s versions are named after them .

Wednesday, November 3, 2010

ARYAN invasion theory, proven false

I was taught in school books and many of my friends still feel “Good” to because of the theory called “Aryan invasion theory” which suggests that India was invaded and conquered by nomadic light-skinned Indo-European tribes from Central Asia around 1500-100 BC, who overthrew an earlier and more advanced dark-skinned Dravidian civilization from which they took most of what later became Hindu culture.I was always skeptical about it but had no evidence to argue about  it with my friends.

Recently I was told by my uncle that many of the modern researchers think this theory is not correct and I continued to search in internet for proof. I came across the following documentary video which gives enough proof that “Aryan invasion theory” was just trick by western world to take credits away from ancient Indian science and civilization , similar to what they did by calling Indian numbers as “Arabic” (see my previous post )

This also slams those Indians who show off superior being “Aryans” , not sure about the reason.

http://www.youtube.com/v/MO8-JCK45tc?version=3

Part 2

Part 3

The Myth of the Aryan Invasion of India By David Frawley

ARYAN invasion theory, proven false

I was taught in school books and many of my friends still feel “Good” to because of the theory called “Aryan invasion theory” which suggests that India was invaded and conquered by nomadic light-skinned Indo-European tribes from Central Asia around 1500-100 BC, who overthrew an earlier and more advanced dark-skinned Dravidian civilization from which they took most of what later became Hindu culture.I was always skeptical about it but had no evidence to argue about  it with my friends.

Recently I was told by my uncle Dr. Ranbir Sinha  that many of the modern researchers think this theory is not correct and I continued to search in internet for proof. I came across the following documentary video which gives enough proof that “Aryan invasion theory” was just trick by western world to take credits away from ancient Indian science and civilization , similar to what they did by calling Indian numbers as “Arabic” (see my previous post )

This also slams those Indians who show off superior being “Aryans” , not sure about the reason.

http://www.youtube.com/v/MO8-JCK45tc?version=3

Part 2

Part 3

The Myth of the Aryan Invasion of India By David Frawley

The Story of Numbers (0 and 1) Indian Numerals or Arabic

 

I found the following videos and comments shared by the YouTube an user .Really These videos are made in such an interesting way that a non science/mathematics student can enjoy the video’s humor .Do watch them.

 

The Zero, decimal system, Indian numerals, astronomy, astrology, trigonometry, ayurveda, chemistry, everything even dream-analysis are some of the numerous contributions of scholars from India.
Unfortunately, the bias has always been against giving no credit whatsoever to the Indian mind. For instance, I was taught in school that the numerals we use are "Arabic Numerals". Why?
…..

……

The story of numbers is the story of civilization. Terry Jones ("Monty Python's Flying Circus") goes on a humor-filled journey to recount the amazing tale behind Indian numerals.
Interesting Facts:
* Baudhayana gave the 'Pythagoras theorem' centuries before the Greeks in 800 BC.
* Pingala (400 BC) invented the binary number system which is the basic of computer operations.
* Indian astronomer, Aryabhatta was the first to have propounded the theory that the earth was a sphere in the 5th century.
* Indian astronomer, Brahmagupta, estimated in the 7th century that the circumference of the earth was 5000 yojanas. A yojana is around 7.2 kms. Calculating on this basis we see that the estimate of 36,000 kms as the earth's circumference comes quite close to the actual circumference known today.

http://www.youtube.com/v/gulApUKih2w?version=3


http://www.youtube.com/v/FRpG6SKnRYA?version=3

The Story of Numbers (0 and 1) Indian Numerals or Arabic

 

I found the following videos and comments shared by the YouTube an user .Really These videos are made in such an interesting way that a non science/mathematics student can enjoy the video’s humor .Do watch them.

 

The Zero, decimal system, Indian numerals, astronomy, astrology, trigonometry, ayurveda, chemistry, everything even dream-analysis are some of the numerous contributions of scholars from India.
Unfortunately, the bias has always been against giving no credit whatsoever to the Indian mind. For instance, I was taught in school that the numerals we use are "Arabic Numerals". Why?
…..

……

The story of numbers is the story of civilization. Terry Jones ("Monty Python's Flying Circus") goes on a humor-filled journey to recount the amazing tale behind Indian numerals.
Interesting Facts:
* Baudhayana gave the 'Pythagoras theorem' centuries before the Greeks in 800 BC.
* Pingala (400 BC) invented the binary number system which is the basic of computer operations.
* Indian astronomer, Aryabhatta was the first to have propounded the theory that the earth was a sphere in the 5th century.
* Indian astronomer, Brahmagupta, estimated in the 7th century that the circumference of the earth was 5000 yojanas. A yojana is around 7.2 kms. Calculating on this basis we see that the estimate of 36,000 kms as the earth's circumference comes quite close to the actual circumference known today.

http://www.youtube.com/v/gulApUKih2w?version=3


http://www.youtube.com/v/FRpG6SKnRYA?version=3