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A100 Pictures!

A100 Pictures!. IN-CLASS QUIZ TODAY Hand in Homework 3 TODAY Next Week: Kirkwood open Oct. 8 Read Chapter 5 (Earth) next week Quiz 4 on Oct. 10 (in class). Today’s APOD. The Sun Today. Falcon 1.

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A100 Pictures!

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  1. A100 Pictures! • IN-CLASS QUIZ TODAY • Hand in Homework 3 TODAY • Next Week: Kirkwood open Oct. 8 • Read Chapter 5 (Earth) next week • Quiz 4 on Oct. 10 (in class) Today’sAPOD The Sun Today

  2. 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

  3. 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!

  4. Homework Review • The Solar System Collaboratory (solarsystem.colorado.edu) • Remember Kepler’s 3rd Law p2 = a3

  5. 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

  6. Exploring Color Astronomy Rules! Astronomy is looking up!

  7. Astronomy and Color

  8. Astronomy and Color

  9. Making Color Images • Multiple images are taken in different colored filters • Images are combined to produce a color picture

  10. Panchromatic Cameras • “Camera Mast Assembly” on Spirit and Opportunity • Two CCD cameras • Each camera contains a filter wheel with filters that pass only specific colors of light

  11. 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

  12. Better eyes than ours… • The rover cameras are sensitive to a wider spectrum of light than our eyes can see • Cameras include ultraviolet and near-infrared filters to record images at wavelengths we can’t see • These filters enhance contrast for analyzing geological features

  13. Pseudo-Color • BW intensity maps to color • No relation to true color

  14. Victoria Crater in Color

  15. TO DO LIST: • Hand in Homework 3 TODAY • Next Week: Kirkwood open Oct. 8 • Read Chapter 5 (Earth) next week • Quiz 5 on Friday, Oct. 10 + HW4

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