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LSST

LSST. http ://www.youtube.com/waterskippers/. Introduction/analogy Move 15,000 ton pile of coal from NY to LA. Coal train has 120 cars, each with 120 tons, so 15,000 tons. http://www.matts-place.com/trains/coal/coaltrain_basics.htm Volume of coal car with 10”heap is 4911 cubic feet.

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LSST

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  1. LSST • http://www.youtube.com/waterskippers/

  2. Introduction/analogy Move 15,000 ton pile of coal from NY to LA. Coal train has 120 cars, each with 120 tons, so 15,000 tons. http://www.matts-place.com/trains/coal/coaltrain_basics.htm Volume of coal car with 10”heap is 4911 cubic feet. http://freightcaramerica.com/Aluminum-BethGonII.htm Wheelbarrow can hold 150L (6 cubic feet) http://en.wikipedia.org/wiki/Wheelbarrow By volume, that’s 98,220 times as many trips by wheelbarrow as by train. It takes 90 days to walk from NY to LA. http://www.steptoofar.com/ It takes less than a week by train. http://www.history.com/this-day-in-history/express-train-crosses-the-nation-in-83-hours

  3. Astronomy : PentaxOptio W10,HST, LSST LSST stands for Large Synoptic Survey Telescope

  4. Diameter of lens/mirror. PentaxOptio W10: about half an inch in diameter HST: 2.4 meters http://www.coseti.org/9008-065.htm LSST: 8.4 meters (mountain in Chile) http://www.lsst.org/lsst/science/optical_design http://www.lsst.org/lsst/faq

  5. Resolution of image: PentaxOptio W10: 6 megapixels HST: Up to 16 megapixels for the Advanced Camera for Surveys http://www.stsci.edu/hst/HST_overview LSST: 3.2 gigapixels http://www.lsst.org/lsst/science/concept_camera

  6. dynamic range of sensor: PentaxOptio W10: 8 bit HST: ? LSST: 16 bit http://www.lsst.org/lsst/science/concept_camera

  7. Sensor sensitivity: PentaxOptio W10: visible light is 380nm to 740nm http://en.wikipedia.org/wiki/Visible_spectrum HST: 115 to 2500nm http://hubblesite.org/the_telescope/hubble_essentials/quick_facts.php or just 115 to 1100nm? http://www.coseti.org/9008-065.htm LSST: 320nm to 1050 nm http://www.lsst.org/lsst/opsim/surveydesign

  8. Primary colors/filters PentaxOptio W10: 3 (red, green, blue to mimic human vision) HST: at least 80 http://www.stsci.edu/hst/wfc3/ins_performance/filters/ LSST: 6 (1 UV, 2 Vis, 3 IR) http://www.lsst.org/lsst/science/concept_camera

  9. exposure time: PentaxOptio W10: adjustable up to 4 seconds HST: adjustable up to over 100 hours http://en.wikipedia.org/wiki/Hubble_Deep_Field LSST: pair of 15 second exposures http://www.lsst.org/lsst/science/scientist_near_earth_objects_faq

  10. purpose: PentaxOptio W10: mimic human vision HST: Seeing certain far away objects, such as black holes. http://science1.nasa.gov/missions/hst/ LSST: solar system(NEO detection), dark energy, optical transients, galactic structure http://www.lsst.org/lsst/science/science_goals

  11. LSST will do the entire sky twice a week. That’s 1000 times in 10 years. http://www.lsst.org/lsst/science/science-faq Ten year times lapse video of the southern sky.

  12. Objects moving, changing brightness, changing color Moving objects include NEOs. Objects that change brightness include starts being transited by a planet Objects that change temperature will change color

  13. Coal train has 120 cars, each with 120 tons, so 15,000 tons. http://www.matts-place.com/trains/coal/coaltrain_basics.htm Volume of coal car with 10”heap is 4911 cubic feet. http://freightcaramerica.com/Aluminum-BethGonII.htm Wheelbarrow can hold 150L (6 cubic feet) http://en.wikipedia.org/wiki/Wheelbarrow It takes 90 days to walk from NY to LA. http://www.steptoofar.com/ It takes less than a week by train. http://www.history.com/this-day-in-history/express-train-crosses-the-nation-in-83-hours • HST: 2.4 meters • http://www.coseti.org/9008-065.htm • LSST: 8.4 meters (mountain in Chile) • http://www.lsst.org/lsst/science/optical_design • http://www.lsst.org/lsst/faq • HST: Up to 16 megapixels for the Advanced Camera for Surveys • http://www.stsci.edu/hst/HST_overview • LSST: 3.2 gigapixels • http://www.lsst.org/lsst/science/concept_camera

  14. LSST: 16 bit http://www.lsst.org/lsst/science/concept_camera • PentaxOptio W10: visible light is 380nm to 740nm • http://en.wikipedia.org/wiki/Visible_spectrum • HST: 115 to 2500nm • http://hubblesite.org/the_telescope/hubble_essentials/quick_facts.php • or just 115 to 1100nm? • http://www.coseti.org/9008-065.htm • LSST: 320nm to 1050 nm • http://www.lsst.org/lsst/opsim/surveydesign • HST: at least 80 • http://www.stsci.edu/hst/wfc3/ins_performance/filters/ • LSST: 6 (1 UV, 2 Vis, 3 IR) • http://www.lsst.org/lsst/science/concept_camera • HST: adjustable up to over 100 hours • http://en.wikipedia.org/wiki/Hubble_Deep_Field • LSST: pair of 15 second exposures • http://www.lsst.org/lsst/science/scientist_near_earth_objects_faq • HST: Seeing certain far away objects, such as black holes. • http://science1.nasa.gov/missions/hst/ • LSST: solar system(NEO detection), dark energy, optical transients, galactic structure • http://www.lsst.org/lsst/science/science_goals • LSST will do the entire sky twice a week. That’s 1000 times in 10 years. • http://www.lsst.org/lsst/science/science-faq

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