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June 27 2010 21:33 UTC | Views: 210 | Comments: 1
Posted by: Kochava in Sky Safari Slideshow
1) John William Draper as a young man (1835)
picture credit: Smithsonian Institute
2) Daguerreotype Image of the Moon by J.A. Whipple, Harvard University, 1852
(John Draper's original daguerreotype of the moon was lost in a fire)
image credit: University of Virginia
3) Daguerreotype Image of Solar Spectrum by John Draper, 1840 image shows both the visible spectrum and part of the ultraviolet
picture credit: Smithsonian Institute
4) Henry Draper with his telescope
picture credit: Wikipedia
5) Henry Draper as an army surgeon in the Civil War, 1862
picture credit: Hastings-on-Hudson Historical Society
6) Photograph of the Moon by Henry Draper, 1863
image credit: Smithsonian Institute
7) Portrait of Anna Draper, 1888, by John White Alexander
picture credit: http://www.museumsyndicate.com/
8) Wet-plate Photography (the Collodion Process)
picture credits: PBS and http://www.collodion.org/
9) Solar Spectrum with Absorption Lines
picture credit: Wikipedia
10) How an Absorption Spectrum Works picture credit: Wikipedia
11) Henry Draper's Observatory in Hastings-on-Hudson, NY, 1880
picture credit: Hastings-on-Hudson Historical Society
12) Venus Transit Photographed in 1882 by US Naval Observatory expedition
(pictures from 1874 expeditions did not survive)
image credit: US Naval Observatory
13) Venus transit 2004
image credit: Slooh; imaged by Derek Hirons
14) Drawing (based on photographs) of the 1878 Solar Eclipse
picture credit: Wikipedia and "Total Eclipses of the Sun" by Mabel Loomis Todd
15) Orion Nebula photographed by Henry Draper
image credits: Harvard College Observatory and American Institute of Physics (1880 image);
Open Door Website http://www.saburchill.com/ (1882 image)
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1880 photo
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1882 photo
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16) Modern Photo of Orion Nebula
Amateur Astronomy Picture of the Day for Feb 9, 2010
Image credit: John Love and Donald Waid
17) Drawing of Orion Nebula as it appears visually
picture credit: Jeremy Perez http://www.perezmedia.net/beltofvenus
18) Spectral Class Mnemonics:
Oven Baked Apples From Grandma’s Kitchen – Mmmm!
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“Oh Boy Another F’s Gonna Kill Me.”
“Only Boring Astronomers Find Gratification Knowing Mnemonics!”
“Oh Be A Fine Girl, Kiss Me!”
“Only Boys Accepting Feminism Get Kissed Meaningfully!”
19) Spectral Classes and Examples
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Spectral
class
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Color
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Surface Temperature
(K)
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Examples –
main sequence
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Examples –
giants
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O
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Blue
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30,000 - 50,000
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Theta-1C Orionis (in Trapezium, in Orion nebula)
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Alnitak and Mintaka (in Orion’s belt)
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B
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Blue-white
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10,000 - 30,000
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Spica, Regulus, brighter Pleiades (Taygeta, Asterope)
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Rigel, brighter Pleiades (Alcyone, Electra, Maia)
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A
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White
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7500 - 10,000
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Vega, Sirius, Altair
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Deneb
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F
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Yellow-white
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6000 - 7500
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Procyon
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Canopus, Mirfak (Alpha Persei), Polaris
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G
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Yellow
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5000 - 6000
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Sun, Alpha Centauri A
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Capella
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K
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Orange
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3500 – 5000
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Alsafi (Sigma Draconis), Keid (Omicron-2 Eridani)
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Arcturus, Aldebaran
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M
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Red
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2000 – 3500
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Barnard’s star, Proxima Centauri
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Betelgeuse, Antares
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