ASTRONOMY 101: Principles of Astronomy

image of prominences on the sun

Spring 2020
Schedule Number 20317;   Section 4
MWF 1:00 - 1:50 pm;   Room EBA-345

Prof. William Welsh
Office: P-235 Physics Building
Office Hours: Mon & Wed 2:00-3:00;   and/or by appointment
email: wwelsh@sdsu.edu
Syllabus

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Due to the COVID-19 virus, and out of an abundance of caution, SDSU will be switching to online-only lecture classes after spring break.
For this class, we will have lectures, live at the normal class time, via ``Zoom''. (Recordings available on request.)
Some useful COVID-19 links:
SDSU Coronavirus (COVID-19) Academic Continuity Preparation
SDSU: The Coronavirus (COVID-19)
San Diego County Government Home: Coronavirus Disease 2019
Center for Disease Control and Prevention (US CDC): Coronavirus Disease COVID-19

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Current Solar Images from the NOAA Space Weather Prediction Center and the Solar Data Analysis Center at NASA GSFC

Hinode 0.2-1.2 keV SDO 17.1 nm SDO 19.3 nm SDO 21.1 nm SDO 30.4 nm SDO HMI Optical continuum
X-ray image of the Sun Far UV image of the Sun UV 19.3 nm image of the Sun UV 21.1 nm image of the Sun NUV 30.4 nm image of the Sun optical image of the Sun
Solar X-rays:
Geomagnetic Field:
Status of solar X-rays
Status of geomagnetic field
Solar status from n3kl.org.


Homework
Class News & Information (including lecture notes)


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ASTRONOMY HELP ROOM
*Free* tutoring for SDSU Astronomy students.
Physics-Astronomy building PA-215.
Mon: 9:30 - 1:30
Tue: 5:00 - 6:00
Wed: 11:00 - 12:00; 3:30 - 4:30
Thu: 1:00 - 3:00
Fri: 12:00 -1:00

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Some useful websites to help explain specific astronomy topics:

From the Perimeter Institute: Alice and Bob in Wonderland ponder Olbers' paradox: "Why is it dark at night?" (60-second animation)


Alice and Bob in Wonderland ask, "Why doesn't the moon fall down??"


NASA's Space Weather Bureau (SpaceWeather.com)
Infrared: More Than Your Eyes Can See from the Spitzer Space Telescope.
Infrared: More Than Your Eyes Can See from the Spitzer Space Telescope. [YouTube version]
How Eratosthenes measured the circumference of the Earth
What are constellations? by C. Dolan @ U. Wisconsin Madison
The Constellations and their Stars by C. Dolan @ U. Wisconsin Madison

Animations/java applets for specific astrophysical concepts:
Celestial sphere, Earth's rotation, elipses & phases of the Moon, etc. from the texbook "21st Century Astronomy" by Hester et al.
A blackbody curve applet from Mike Lee @ Davidson College
Kepler's Laws animation by Ming Zhu @ U. Toronto
Epicycle animation also by Ming Zhu
Parallax, Doppler effect, eclipses, etc. from a large collection of applets written by Rob Scharein

What's Visible in the Heavens tonight?
"This Week's Sky at a Glance" from Sky and Telescope
SkyMaps.com provides a current star chart and celestial events calendar each month.
The Sky This Week from the U.S. Naval Observatory
The Night Sky by the Univ. Manchester/Jodrell Bank Observatory
NightSky info from Space.com
Sky & Telescope Magazine's 10-page guide to getting started in observing the heavens: Sky & Telescope: Getting Started (.pdf); It includes a Moon map and star charts for different times of the year, as seen from the Northern hemisphere. See the web page Getting Started in Astronomy PDFs for more info on the file. Copyright 2003 Sky Publishing Corp.
NASA's Eclipse Home Page
PBS Seeing In The Dark has an on-line star chart software called Your Sky Tonight. Software from the textbook is faster and more complete, but this works too. Hint: click on the "horizon facing south" link at first to get things oriented most easily.

On-line Astronomy Notes:
Astronomy Notes: A great set of astronomy notes by Nick Strobel.
"Time Scales" from Strobel's Astronomy Notes.
Nine Planets (by Bill Arnett)
Two comprehensive course WWWeb pages from the Astro Dept, Univ. of Tennessee:
(1) Astronomy 161: The Solar System
(2) Astronomy 162: Stars, Galaxies, and Cosmology
A Survey of Intro Astronomy Class Web pages by R. Hudson @ Eckerd College.

Some interesting/useful/fun websites:
SDSU Astronomy Dept. & Mt. Laguna Observatory
Some images from SDSU's Mt. Laguna Observatory
Astronomy Picture of the Day
"Hubble Site" (HST images and info)
Hubble Space Telescope "Heritage Project" (more great HST images)
NASA Space Science photo gallery (plus latest images from spacecraft)
PBS's Seeing in the Dark website, and the fun Birthday Stars page.

Some Interesting Current Events Websites:
NASA's Mars Exploration Program
NASA's Mars Exploration Rover Mission
The Cassini-Huygens Mission
"Eris" (aka "Xena" or 2003 UB313), a new planet larger than Pluto (from Astrobiology Magazine). See also: A tenth planet beyond Pluto: 2003 UB313 from co-discoverer Mike Brown @ Caltech
More on 2003 UB313 from The Planetary Society.
The most distant object in the Solar System: Sedna announced 2004 March 15.

telescope image of Messier 5 Pleides star cluster Figure Caption: The Pleiades open star cluster. (credit: APOD)


Figure Caption: The globular cluster "M5", observed at SDSU's Mt. Laguna Observatory.

NASA missions and more useful websites:
NASA/JPL PhotoJournal
A Solar System Simulator
NASA "Liftoff to Space Exploration"
NASA's "Imagine the Universe: black holes" (intro astronomy topics)
Voyager ("I'm not dead yet!")
"What Have We Done For You Lately? NASA Connections to Everyday Life"

ESO (European Southern Observatory) VLT site (cool photos & press releases)
Near-Earth Objects: There are hundreds of potentially hazardous asteroids - are we gonna get clobbered?
McDonald Laser Ranging
Windows to the Universe (Univ. of Michigan)
Satellite image of pacific & western US (enhanced IR)
The Green Flash (Andrew Young)

Some astronomy & science organizations:
Sky & Telescope Magazine
Astronomy Magazine
StarDate (online version of the world-wide radio program)
Universero (= StarDate in Spanish)
Astronomical Society of the Pacific: ASP
American Association of Variable Star Observers: AAVSO
Association for Women in Science: AWIS
Variable Star Network: VSNet (a great amateur astronomer research site from Japan)
US Naval Observatory Master Clock


A large set of general astronomy related sites from my Astr310 Astrobiology course website



Fun Units of Measure

This page was last updated on 2020 Jan 20