1 / 14

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.

salome
Download Presentation

LSST

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related