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Introduction

Introduction. ASTR 3010 Lecture 1 Chapter 4. http://cosmos.physast.uga.edu/iSong/ASTR3010. Course Homepage. http://cosmos.physast.uga.edu/iSong/ASTR3010

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Introduction

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  1. Introduction ASTR 3010 Lecture 1 Chapter 4

  2. http://cosmos.physast.uga.edu/iSong/ASTR3010

  3. Course Homepage • http://cosmos.physast.uga.edu/iSong/ASTR3010 • Course announcements will be made through this page. Occasionally, some relevant lecture notes will be provided as PDF files from this site. • Three exams (two in-class exams and a final). • Some homework and extra credit works (email submission). • Accounts were created for you on a computer server • server name : cosmos.physast.uga.edu • userid = UGA myid • passwd = “astr3010”  reset your passwd after your 1st login • at the command prompt, type “passwd”

  4. Course Layout

  5. Changes in Observational Astronomy • Until early 60s: Selected few elites have exclusive accesses to largest telescopes (e.g., Palomar 5m telescope by Caltech, Cornell, etc.) • “National Observatory” : Kitt Peak National Observatory, Cerro ToloroInterAmerican Observatory, Gemini (international), VLT, etc… • any astronomers with a brilliant idea can carry out a project. • All-sky surveys and science archives : data obtained from publically funded programs need to be shared! • Hubble Space Telescope • Data archives for ROSAT (X-ray), IRAS (IR), Spitzer, GALEX, ISO, AKARI, WISE, Gemini, VLT, Keck, … • Hard to find relevant information  Need for a better tool  Virtual Observatory • No more lame excuse: “I do not have an access to large telescopes…”

  6. Ground-based telescopes • http://astro.nineplanets.org/bigeyes.html Why larger telescopes?

  7. Space Telescopes • James Webb Space Telescope • Launch ~2018 • post HST • 6.5m primary mirror • mid-IR telescope Why space telescopes?

  8. Upcoming Telescopes Why large area surveys?

  9. Python!! Importance of a good programming skill! Essential skill for a survival. Make sure that you will be able to run “python” code. • If you are using Mac, you’re already set. • If you are using linux, even better! • If you are using a Windows OS • dual-booting (Win+Linux) • live linux CD • Virtualization (VMWare, VirtualBox, etc.) • Python • python core • graphing tool (matplotlib) • science tools (scipy and numpy) • Google is your good manual for the above tasks.

  10. Python Tutorials Real basics : • Good introductory book:“Python for Dummies” • http://www.learnpython.org • http://www.astro.uni-bonn.de/~rschaaf/Python2008/ Little advanced : http://python4astronomers.github.com/

  11. In summary… Important Concepts Important Terms Python • Importance of a programming skill • Needs for larger telescopes • Needs for space telescope • Needs for larger surveys • Chapter/sections covered in this lecture : N/A

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