1 / 44

NASA’s Great Observatories “an astronomical Mount Rushmore”

Spitzer. Chandra. NASA’s Great Observatories “an astronomical Mount Rushmore”. Compton. Hubble. Gains in orbit. No atmospheric blurring Wider accessible wavelength range Instrumental stability No clouds/daylight (timing). HUBBLE. Past …future?.

msherry
Download Presentation

NASA’s Great Observatories “an astronomical Mount Rushmore”

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. Spitzer Chandra NASA’s Great Observatories “an astronomical Mount Rushmore” Compton Hubble

  2. Gains in orbit • No atmospheric blurring • Wider accessible wavelength range • Instrumental stability • No clouds/daylight (timing)

  3. HUBBLE Past …future?

  4. Some HST Science highlights • Structures of distant galaxies

  5. Some HST Science highlights • Structures of distant galaxies • Hubble constant from Cepheid variable stars

  6. Some HST Science highlights • Structures of distant galaxies • Hubble constant from Cepheid variable stars • Black holes in (almost all) galactic nuclei

  7. Some HST Science highlights • Structures of distant galaxies • Hubble constant from Cepheid variable stars • Black holes in (almost all) galactic nuclei • Protoplanetary material near young stars

  8. Some HST Science highlights • Structures of distant galaxies • Hubble constant from Cepheid variable stars • Black holes in (almost all) galactic nuclei • Protoplanetary material near young stars • Gravitational lenses

  9. Some HST Science highlights • Structures of distant galaxies • Hubble constant from Cepheid variable stars • Black holes in (almost all) galactic nuclei • Protoplanetary material near young stars • Gravitational lenses • Intergalactic gas and its history • Stuff scattered all the way through the textbooks

  10. Supernova progenitor in M51

  11. (Li et al. in press)

  12. Gravitational microlensing in NGC 3314

  13. Instrument history • 1990: FGS HSP FOS GHRS FOC WF/PC • 1993: FGS CoSTAR FOS GHRS FOC WFPC2 • : FGS CoSTAR NICMOS STIS FOC WFPC2 • 2002: FGS CoSTAR NICMOS STIS ACS WFPC2 • 200? COS, WFC3

  14. Hubble status, August 2005 • Space Telescope Imaging Spectrograph dead (only high-res/small-region spectrometer) • 3 of 6 gyros (RSUs) functional (3 normally needed, 2-gyro mode successful in tests) • Battery capacity decreasing (will be useless circa 2010) • Estimated 50% failure time on above: 2007 • Instrument/transmitter power cycling now reduced by rescheduling/eliminating parallel imaging

  15. UPDATE 31 AUG 05 – 2 GYROS DAILY REPORT     # 3934PERIOD COVERED: UT August 29, 2005 (DOY 241) All commanding for the transition to Two Gyro Science mode was successful. Commanding included modifying control law gains for T2G, loading FSW support files for TGS, modifying +D SPA commanding in new TGS safemode macros, transitioning to TGS mode, and performing a full RAM dump. Transition to TGS mode took place at 241/0217. The first FGS guide acquisition at 0812 was successful, as have all subsequent acquisitions. Jitter in F2G (FGS/2 Gyro mode) was measured at approximately 3 milliarcseconds. All three acquisitions performed have been successful with no LOL.

  16. Options • Shuttle SM4 (O’Keefe ruled out, CAIB concerns, Griffin optimistic) • Replace the whole thing (HOP proposal to refly COS/WFC3)

  17. Shuttle? • “Safe haven” would mean standby orbiter • Limited remaining flights earmarked to ISS • Need for independent orbital inspection • Victim of the Vision? • Orbital mechanics: 28.5-degree inclination, getting heaviest payloads highest from Cape Canaveral, restricts options now

  18. Servicing non-options • Prohibitive energy requirements to co-orbit with ISS in reach of astronauts • 28-degree orbit out of reach from Baikonur (ITAR restrictions aside) • Ion thrusters would take the estimated telescope lifetime for orbit change • ~2015-30 estimated deorbit without boosting

  19. Replace capabilities? • Technology since 1980: lots cheaper. Thin flexible mirrors, lightweight structures, stabilize mirrors rather than structure… • Unique access to optical/UV range • Plan on table to fly 2.4m mirror with existing HST instruments (Hubble Origins Probe or HOP); could be as low as $250M. • Need to decide who gets the instruments!

  20. Final servicing status • Current policy: do not preclude • Depends on next (2?) STS flight results • COS, WFC3, STIS repair, batteries, gyros • Deorbit module status unclear • Target: late 2007

  21. Next up: JWST

  22. James Webb Space Telescope • Launch 2011, on Ariane V, to L2 region • 6.5m deployable primary • 0.6-20 microns (far red to mid-IR) • Key problems: formation of galaxies, first stars, maybe planets • Spacecraft weight/mirror area ratio roughly that of Hubble mirror alone!

  23. Compton Gamma-Ray Observatory

  24. Compton Gamma-Ray Observatory • Deployed April 1991 by Atlantis crew. Deorbited mid-2000. • Distribution, distance of gamma-ray bursts • Gamma-ray blazars, relativistic beaming • Microquasars • Radioisotopes in interstellar medium • Successors: Swift, INTEGRAL, GLAST

  25. And at other wavelengths… Chandra and its complement XMM-Newton

  26. The galactic-center black hole and its attendants

  27. Hot gas between galaxies

  28. The chemistry of a supernova

  29. Fireball impact in Supernova 1987A

  30. The history of black holes – a Chandra deep field

  31. Spitzer Space Telescope

  32. Spitzer Space Telescope • Warm launch, radiative cooling • Cryogen management, 2 years of 5+ so far • Earth-trailing heliocentric orbit • 2 cameras, 2 spectrographs, 3.6-160 mm

  33. Temperatures of extrasolar planets Direct detection of IR from two “hot Jupiters” during eclipses, two wavelengths give temperature estimates

  34. Looking into dusty star cradles

  35. Across the spectrum - now FarIR MidIR nearIR opt UV farUV X-ray gamma GALEX INTEGRAL Spitzer FUSE WMAP Hubble Chandra

  36. Intergalactic gas Starburst galaxies High-redshift galaxies Evaporating planets Protoplanetary disks Growth of black holes Complexity of stardeath Gamma-ray bursts Supernova chemistry Quasar jets Stripped galaxies Pregalactic lumps Galaxy history Relativistic jets Multispectral Greatest Hits

  37. A panchromatic view -spiral galaxy M81 ROSAT GALEX Kitt Peak Spitzer VLA

  38. Across the spectrum - soon FarIR MidIR nearIR opt UV farUV X-ray gamma JWST FUSE? INTEGRAL Spitzer Swift GALEX? Planck Hubble? Chandra and XMM SIM TPF? Herschel

  39. A new Universe to explore • The full electromagnetic spectrum • Open international competition for observations • Public data archives (without mailing tapes!) • The beginnings of the Virtual Observatory • But astronomers think about facilities differently from NASA and ESA…

More Related