Today’s APODAPOD IN-CLASS QUIZ TODAY Hand in Homework 3 TODAY Next Week: Kirkwood open Oct. 8 ...
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Transcript of Today’s APODAPOD IN-CLASS QUIZ TODAY Hand in Homework 3 TODAY Next Week: Kirkwood open Oct. 8 ...
Today’s APOD
IN-CLASS QUIZ TODAYHand in Homework 3 TODAYNext Week: Kirkwood open Oct. 8Read Chapter 5 (Earth) next week Quiz 4 on Oct. 10 (in class)
The Sun Today
A100 Pictures!
Falcon 1
Carries a hexagonal aluminum alloy chamber as a simulated payload (weight 364 lbs, about five feet long)
An elliptical orbit of 500 km by 700 km, 9.2 degrees inclination from the equator
First privately launched vehicle to make orbit
Oct. 2, 1608Invention of the Telescope
Hans Lipperhey, spectacle-maker Middelburg, Zeeland, Netherlands States General discussed Lipperhey's
application for a patent on the telescope on Oct. 2 (denied!)
Others also claim to have invented the telescope, but documentation not available
News of the telescope spread rapidly!
Homework Review
The Solar System Collaboratory (solarsystem.colorado.edu)
Remember Kepler’s 3rd Law
p2 = a3
Astronomical Imaging Spacecraft use
cameras that measure light intensity only – no color
Cameras take pictures through colored filters
Each picture is a black & white image of the light intensity at a particular color.
Opportunity’s view into Victoria Crater on Mars
Making Color Images
Multiple images are taken in different colored filters
Images are combined to produce a color picture
Panchromatic Cameras
“Camera Mast Assembly” on Spirit and Opportunity
Two CCD camerasEach camera contains
a filter wheel with filters that pass only specific colors of light
Getting the Colors Right
Each rover has a color calibration target From B&W images of the calibration target, image
scientists adjust the balance of color in the final, combined image by controlling the brightness of each B&W image when added together
The goal is to reproduce what it really looks like
Better eyes than ours…The rover cameras are sensitive to a wider
spectrum of light than our eyes can seeCameras include ultraviolet and near-
infrared filters to record images at wavelengths we can’t see
These filters enhance contrast for analyzing geological features