From Planets to Stars to Galaxies: Putting things in their placestdc- · 2010-06-17 · From...
Transcript of From Planets to Stars to Galaxies: Putting things in their placestdc- · 2010-06-17 · From...
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From Planets to Stars to Galaxies:
Putting things in their placesBy
Doug MinkSmithsonian Astrophysical Observatory
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It All Started With Mars
MIT Vidicon Spectrometer withcamera monitoring slit in mirror
Spectrometer slit reprojected acrossMercator projection of Mars surface
(Mink, MIT S.M. Thesis 1974)
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It All Started With Mars
Aperture photos projected on observed planet diskand reprojected onto Mercator projection of Mars
(Mccord, Huguenin, Mink, and Pieters, Icarus 31, 1977)
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Finding Stars to be Occulted
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Mapping observability
Geocentric prediction of Uranus 16 Sun down, Uranus up for Uranus 16
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Predicting Occultations
Palomar Sky Survey overlayfor stars occulted by Uranus
Sky plane map of Uranusring occultation of KMU102
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All-Sky IR Mapping from Space
Spacelab 2 Infrared Telescope(Space Shuttle Challenger, July 1985)
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All Sky IR Mapping from Space
Spacelab 2 Infrared Telescope(Space Shuttle Challenger, July 1985)
1985 Day 213, Orbit 4, 50,964 0.1-sec frames
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Galactic Center from Spacelab 2
(Kent, Mink, Fazio, Koch, Melnick, Tardiff, Maxson, ApJS 78:403-408, 1992)
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Mapping Multiple Catalogs
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All-Sky Maps meet Catalogs
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Onto the World Wide Web
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Onto the World Wide Web
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Fitting a WCS using WCSTools
USNO-B1.0 Catalog plotted overimage using telescope pointing
FITS header with limited WCS keywordsfrom telescope
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Fitting a WCS using WCSTools
USNO-B1.0 Catalog plotted overimage after imwcs WCS fit
FITS header with WCS keywordsafter WCS fit using imwcs
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More Catalogs
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Testing Catalog Accuracy
216 1x1 degree fields from the 8K array on the KPNO 36-inch telescopecover half of the CfA Century survey, 50 degrees across the sky
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Testing Catalog Accuracy
The 2MASS Point Source Catalog plotted over one of the 1728 test images
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Testing Catalog Accuracy
Differences between the 2MASS Point Source Catalogand a WCS fit to all of the images
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Testing Catalog Accuracy
Differences between the Sloan Digital Sky Survey Catalogand a WCS fit to all of the images
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Testing Catalog Accuracy
Differences between the GSC 2.3 Catalogand a WCS fit to most of the images
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Testing Catalog Accuracy
Differences between the 3rd USNO CCD Astrometric Catalog(UCAC3) and a WCS fit to half of the images
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Redshifting Into the Universe
Before Sky Removal After Sky Removal
After Sky Removal
Before Sky Removal
12,553 Spectra from the Hectospec SHELS survey