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Free Lecture 03: Universe Scale, and Light II

The lecture video is embedded below but also available here in MP4 format.
Additionally, slides used in the lecture are embedded below but also are available here in Powerpoint format.
Questions after the lecture? Please ask them in here.

Wikipedia entries:
Black body
Spectrum
Spectral line
Bohr model
Doppler Effect

Additional Apod photos disccussed

Imagine if we lived in a binary solar system or a triple star or even an open cluster with 10-100 stars or  why not a globular cluster with 100000-1000000 stars….. But don’t we see that we live with one bright star, which is kind a bit unusual, but it rather appears that it is the greatest benefit to humanity, allowing us to have a Night.

The Bohr atom

The Doppler shift high and low

Sheldon Doppler

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Free Lecture 02: Universe Scale, and Light 1

A lecture to study the nerdy part of the Big Universe. Do you think it’s a good way to kick-start your Sunday morning? It’s what I did. It was a mind-blowing experience. But what intrigues me is:  Why is this Universe so big?

Lecture 02: Universe Scale, and Light

The lecture video is embedded below but also available here in MP4 format.
Additionally, slides used in the lecture are embedded below but also are available here in Powerpoint format.
Questions after the lecture? Please ask them in here.

Wikipedia entries:
Earth’s atmosphere
Light
Black body
Wein’s Law
Stefan Boltzmann Law

What Interested ME in this lecture.

Web sites
Secret Worlds: The Universe Within
Atlas of the Universe
Notes:
Alpha Centauri is a system.
proxima Centauri is part of  this system.
Black Body Radiation
The hotter you are the more you radiate light. This is why we say “she’s Hot”.
Humans emit light. On the higher stratas of humanity, if you’re spiritually high you shine or radiate.
Human beings emit infra-red light. That is the reason in infrared light, people glow.
Black Body Spectra
Blue is hot than red.
White is hot than blue.
I believe Black is hotter than white. though we can’t see black light. Is Dark Matter black light. Has this been proved scientifically?
Open Cluster
I appreciated the saying Open stars are like Jewel Box
Last slide
We’ll be ending early today. WAeee!!!
Revisiting Albireo. Albireo was mentioned in Turn Left to Orion.

Astronomy Lectures for FREE

Astronomy has been lately like a drug on me. So I have decided that I should study it (though at my own pace) but study it seriously. So I was looking up for astronomy lectures and I stumbled upon this MichiganTech University lectures on astronomy for first year freshers completely free of charge. Astronomy is considered as an expensive hobby per se…..but much to my astonishment much of astronomy stuff  could be acquired on the web for completely FREE.

So I am enrolling myself for this study and perhaps sit for an exam too later….I can’t say about that. But I think giving some of my time to learning something fascinating is worthwhile.

And though there are calculations and stuff requiring mental exercise and quite of reading yet I am jumping on this. By the way anyone interested to join the bandwagon, just hop on.

So, just to give a quick intro of what’s it’s all about.

Introduction

“Posted in this forum are the lectures of a free introductory astronomy course as taught by me, APOD co-editor and university professor Robert Nemiroff, at Michigan Technological University in the fall of 2008. Each lecture of the class is included here, one lecture per thread. Each lecture thread should contain at least one video lecture and one Powerpoint file containing the slides that I used. I was proud that I used no textbook for this class but instead relied on strong Wikipedia articles. This made the class especially Internet friendly and particularly conducive to this type of online forum. Many students saw these exact lectures in Fall 2008, took online quizzes not available here, and received college credit at Michigan Tech.

General astronomy questions, no matter how basic, can be asked in the greater Asterisk forums. Please do not send email to the address shown in the video. Unfortunately, I expect to move on to other projects and would like this project to run autonomously. I therefore ask that if someone knows the answer to an asked question, please go right ahead and answer that question. Please do not wait for me to answer. On occasion, however, I do peruse The Asterisk’s forums.

Next, I expect that I have made several mistakes. I cannot correct the video, but please do point these out in The Asterisk forums so that future online students get the best information possible. Past that, the general rules for posting on The Asterisk bulletin board still apply as much as reasonably possible. These rules can be summed up as “be polite.”

Over the first few months of 2010, this thread and this very post may be edited without notice for clarity and technology upgrades. If you yourself have suggestions as to how to make this free online course better or more accessible, please post that on the general discussion (Open Space) forum of The Asterisk.

– Robert Nemiroff (RJN)”

( So for any further questions or queries just throw yourself to the forum, not me either) Yeah but we can discuss.

Pros:

  • The lectures are being given by Robert Nemiroff
  • Lectures are all completely free.
  • You aren’t required to buy books. Reference material would be from Wikipedia.
  • Lecture notes are not transcribed.
  • Lectures are online.
  • Lectures are accompanied by a power point slide.
  • There’s a catch: Apod (Astronomy Pictures of the day would be used to explain the mysteries of the universe.  They start from September 1rst 2008.

Cons:

  • There are few mistakes which can be overlooked.
  • If you want to sit for an exam you have to pay MichiganTecH. I don’t know. It doesn’t bother me now.
  • Lecture notes are not transcribed.

So here we start

I hope I am not infringing any rights by posting this lecture here. I really didn’t get in contact with the lecturer. Nevertheless I would like to thank him for this stuff.

Lecture 01: A Grand Tour of the Universe

The lecture video is embedded below but also available here in MP4 format.
Additionally, slides used in the lecture are embedded below but also are available here in Powerpoint format.
Questions after the lecture? Please ask them in here.

The Lecture.

Wikipedia entries:

Universe
Electromagnetic spectrum
Light year

My First Observation

Rather would like to call it My First Night SKY gazing

Forgetting my new pair of binocs was not something willed upon but New Year 2012 was approaching and as the hump-jump was everywhere, the sky was absolutely something to be forgotten about.

Do, you think the sky can be just something taken for granted and not taken care about? Obviously, for the half of my life I had never taken any interest with the sky, nor does the mass of dumbed down populace.

So why this sudden rush to understand the sky now??

The sky has been always there, neither it is so “enchanting” nor “magnetic” but our eyes are so riveted to our laptop screens or our TV sets that we have almost no time to care for what’s happening above us. Or, to just even ponder about a sky so beautiful with all its mysteries there waiting to be explored upon.

The creation of the heavens and the earth is indeed greater than the creation of mankind; yet, most of mankind knows not.

(Quran 40:57)

At 12:00 a.m midnight, around the world as it is, the festivities started with the fire works show.

In Mauritius, at the peak of the Signal Mountain this fireworks time-lapse was taken.

Unbelievingly, by one in the morning of January 2012, everything quietened up. The night was still.  No stirring up of even the leaves on trees around.

I am still thinking why did I go out that night rather than sleep?

So, my first observation did happen on 01/01/2012. How do I remember this? I think reading a review somewhere  I  came upon the advice that if you are entering this amateur astronomy hobby, ever if you are observing even for a few minutes , just record the observations. It would help you a lot.

How?

Personally, while reviewing at my log notes in my personal diary, I looked foolish of what I had logged as my first observations, but it was so interesting that an amateur as me brought in my own astronomy definitions on my first time to the already defined observable universe.

Nevertheless, the first observation remains the best and the most memorable.

Perhaps this is why I am so much in love with  Alnitak, Alnilam and Mintaka. These three prominent stars inthe central regions of the constellation of Orion align to form the ‘belt’ of the Hunter.

And surprisingly the whole world is also. Take any beginner’s guide to the sky, they would talk only Orion,Orion, Orion. I didn’t know about Orion or its belt, but perhaps this was a sign from The Creator that this is where you should start your journey to the universe. There is so much I have learned about these three that I am baffled and there is still more to come.

The actual observation

Standing towards the west, I saw this magnificently in front of me.

I continuously looked at this portion of the sky for 2 hrs straight

What I actually wrote as observational notes?

Night gazing: The axe

Naked eye: Concentrated dots

Binocs: Small dots.

01:00 – 03:00 am

I also drew the dots  in a diary.

What makes me foolish looking now is that I called the Orion belt as the axe’s blade and the Orion Nebulae as the axe’s handle.

Hey, if the Greeks can make out Gods out of stars why can’t I make my own Axe?

The Orion Hunter

So, I have already fallen in love with the sky, what are you waiting to raise your eyes to the beautiful night sky?

Binoculars or Binoscope

Reading an article on beginners in amateur astronomy, I came to understand that my search for telescopes is not at the right time. Telescope will not allow you or put you on the night viewing passion, but rather not knowing its efficient use may also lead its place to the closet.

Usually it is advised for any requiring hobby to start on by buying this or buying that. I was rather astonished to the fact that most experienced amateur astronomers usual first time advice is to get familiar with the night sky, with the constellations and with the stars before buying anything. (As if they know, that once you get in this field then your aperture fever or drooling on the latest equipment never dies).

Therefore, I took the advice to buy a binocular first rather than buying the telescope. And in fact the next day, I went to buy my first binoculars. A 10 x 50. Explanation to what is this 10 x 50 is given in the following youtubes. I like this guy’s simple explanations.

But my astonishment found no bounds when you come to know  that binoculars are not only this size but can they be larger or bigger.

 

As to be said, the nerd notion was a bit less understood, so this post is an upgrade of nerdiness to be found in the amateur astronomy world. Browsing through the internet you find a lot but, which marks your interest may be only a selected few.

I regret the fact that there are others who call these people nerds or fools but I would rather call them enthusiasts.

You don’t even understand or need to understand the love they have for the night.

So, what do you say now, A good pair of Binoculars or Binoscope?

Rocket Roberts is such a Nerd

Rocket Roberts  is such a Nerd

How can someone be such a nerd to start from a telescope

how Rocket Roberts got his start in Astronomy

to see the night sky as a hobby and then  to build a whole observatory in his backyard. I felt that this is something weird. “All Americans are weirdos”. In our part of the world people don’t become so much weird. But….. I was to be proved WRONG!!!

Actually following the beginners telescope advice I made up my mind that I should obviously have an Orion SkyQuest XT8 Classic Dobsonian Telescope  But later (in the later months of research in the amateur astronomy world)  in my quest to buy my best first  telescope led me to find weirder people in the astronomy field who are not mad about telescopes but OBSESSED about TELESCOPES.

And here  I bumped up on to OBSESSION Telescopes.

Jim-Lowery,-Dragan-Nikin,-Jim-Rippey-560px from http://www.obsessiontelescopes.com/galleries/index.php

But now I have made up my mind to get my first telescope. Though it would be much a hassle as I have to import it. But it would be either the Orion XT8 Classic Dobsonian Telescope,

Orion SkyQuest XT8 Classic Dobsonian Telescope

Orion XT10 Classic Dobsonian Telescope

the Orion XT10 Classic Dobsonian Telescope.

And then one day or the other to have one Obsession Telescope for Life time use. Hope this child wish realises.

You want to buy a telescope?

One night it happened to me that yeah I have to buy a telescope so that I could have a look at the sky. It would be something that my children could use and see  a bit through the night sky. Perhaps this sudden  rage to buy happened by viewing  shot from the films where the there is a scene of a child viewing through a telescope and then the father calls him to sleep , I don’t remember the film though.Kinda want a help on that though.

So back to the subject I had to buy a telescope but  where to start about………(As I said previously said this blog is an absolute nerds guide to the universe. As such I googled a bit on telescope ( as I knew it is called a telescope) but again, it was a dead-end.

How can someone buy a telescope when one has not the least info on what to buy.

So, I don’t know how but it came up to me that telescope using and playing through should be a hobby for some people out there, obviously I won’t go to an astronomer to ask which telescope to buy , especially when I had spared about  Rs 1500 (about $50) to buy a toy for me and the children.

I am a heavy user of YouTube so first of all I youtubed  “Telescope”  in the Search block. And obviously  came up with Expertvillage to give me some ideas on what telescope to buy. It is somewhat there or perhaps somewhere else  that I learned about the word AMATEUR ASTRONOMY.

So I googled  “AMATEUR ASTRONOMY” and I got a few titles to choose.  And it is normal psychology to choose among the best and in my opinion I got to choose the best of all the amateur astronomy websites  in the world.  It is usual to see amateur astronomy links highlighted on the first google page but perhaps Rocket Roberts is the best of amateur astronomers that his oldy website is still appearing on the google page.

amateur astronomy search

Nevertheless to mention that google has saved a lot of people.

So google saved my day or the whole night cause I spent the whole night till 8:00 in the morning perusing  everything on Rocket Roberts website about telescopes.

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