Lisa M. FrattareSpace Telescope Science Institute

Advanced Imaging ConferenceNovember 12, 2005San Jose, CA

The Hubble Space TelescopeThe Hubble Space Telescope

Lisa M. FrattareSpace Telescope Science Institute

Advanced Imaging ConferenceNovember 12, 2005San Jose, CA

Lisa M. FrattareSpace Telescope Science Institute

Advanced Imaging ConferenceNovember 12, 2005San Jose, CA

Lisa M. FrattareSpace Telescope Science InstituteBaltimore, Maryland

Advanced Imaging ConferenceNovember 12, 2005San Jose, CA

Common Optical Data Artifacts

• Pixel artifacts• Diffraction spikes• Mosaic chip seams/gaps• Noise• Sky background mismatch

Telescope:Telescope:� Deployed April 25, 1990� Designed to last 15 yrs � 8-foot-diameter mirror� 386/486 processor

Orbit:Orbit:� 380 miles above Earth� Full Earth orbit in 97 minutes� Travels at 5 miles per second (NY-LA in 10min)� Earth-occultation leaves ~45 minutes of viewing

Ring Nebula M57

• STScI-PRC99-01

Above EarthAbove Earth’’ssatmosphere:atmosphere: � Always night

� No weather�No distortion�No absorption

Remote:Remote:� Hard to repair/upgrade(expensive & risky)

Hubble Space Telescope

HST Field of View

Fine Guidance Sensors check for movement 40 times a second!

Fine-guidanceSensors (Tracking)

STIS (spectra) RIP

WFPC2ACS (imagers)NICMOS

Near-IR

HST FOVHST FOV

M16

Wide Field Planetary Camera 2Wide Field Planetary Camera 23 3 -- 800x800px @ 0.1800x800px @ 0.1””/px/px1 1 -- 800x800px @0.05800x800px @0.05””/px/pxChevron Shape Chevron Shape -- $$$$$$

Saturn

HorseheadWFPC2WFPC2-- 1993 1993 -- presentpresent-- MosaicsMosaics are possible are possible

Broad and Narrow FiltersBroad and Narrow Filters-- HHαααααααα, [N II], [O III], [O I],, [N II], [O III], [O I], [S II][S II]

Mosaic outlines NGC 2207

Multiple Pointings

Sombrero Galaxy M104

Wide Field Camera- Pair of 8-megapixel CCDs= 2048x2048px @ 0.05”/px (chip gap)- Near UV � Optical � near IR - Broad-band, narrow-band filters, no [S II]- Excellent for mosaics; galaxies

Advanced Camera for Surveys

Tadpole Galaxy

Helix

Mars

• STScI-PRC98-08d

ACS: High Resolution CameraACS: High Resolution Camera-- single 1024x1024px@0.025single 1024x1024px@0.025””/px/px-- removable occulting masksremovable occulting masks-- nonnon--removable occulting fingerremovable occulting finger

NGC 4414

Releasing an image a month since 1998Drive is aesthetics in addition to scienceSmall allotment of orbits yearly

Hubble Heritage ProjectHubble Heritage Project

http://heritage.stsci.edu

Saturn

Introduction

Since 1990: Hubble FactsSince 1990: Hubble Facts from 15th Anniversary April 2005from 15th Anniversary April 2005

- 700,000 exposures taken - probed more than 22,000 celestial objects- completed 88,000 orbits (equaling 2.3 billion miles)

(400,000 x NY�LA distance)

- accumulated 23 terabytes of data - generates 15 gigabytes daily- used by 3,900 astronomers internationally- 4,000 scientific papers on

Hubble results

Time is awarded via a yearlyPeer-Review process. Roughly1,500 proposals are submittedfor both imaging and spectral data,with roughly a 1/3 acceptance rate.

KeyholeCurrent Status of HubbleVoluntary 2-gyro modeRecent loss of STIS spectrographBatteries/gyro failures expected

Servicing Mission 4Batteries/gyrosWide Field CameraCosmic Origins Spectrograph“Three shuttle missions away”

Current Status of HubbleVoluntary 2-gyro modeRecent loss of STIS spectrographBatteries/gyro failures expected

Servicing Mission 4Batteries/gyrosWide Field CameraCosmic Origins Spectrograph“Three shuttle missions away”

Thank you