Keyhole The Hubble Heritage Project Bridging Science and Aesthetics by Lisa Frattare and Keith Noll Hubble Heritage Team Space Telescope Science Institute 1

    Deployed April 25, 1990  Designed to last 15 yrs Diameter of Mirror: 8 feet Focal Length: 189 feet (57.6 m) Length of Tube: 43.5 feet  Speed: 17,500 mph (5 mps) Altitude: 380 miles (600 km)   Full Earth Orbit: 97 minutes Earth Occultation every 45 minutes Processor Speed: 386/486 Hubble Space Telescope (HST) >>> 2

Size of Earth Size of Earth’s Atmosphere 6400 km 600 km above surface Size of Hubble’s Orbit 100 km above surface 3

HST: World-Class Science Instrument Cycle 18 ( ) showed the highest over-subscription rate (9:1) in the history of Hubble observations proposals were submitted for 23,000 orbits Total Available Orbits: 2,600 Awarded: 1,700 orbits for Small Proposals (under 40 orbits) 300 orbits for Medium Proposals (40-99 orbits) 600 orbits for Large/Treasury Proposal (i.e. M31) ??? orbits for Director’s Discretionary ToO: Target of Opportunity (SNe, comets) Hubble Heritage Outreach Project (15 orbits) >>> 4

I V B Broad-band Image Compositing 5

I V BRedGreenBlue Broad-band Image Compositing 6

I V BRedGreenBlue Broad-band Image Compositing 7

Narrow-band Imaging [S II] H-alpha [O III] 8

Two-Color Image Compositing 9

(L) HST/ACS: H-alpha+[N II] (RGB) CTIO: [S II], H-alpha, [O III] Single Filter (LRGB) 10

M51 11

M51 Hubble Data Ground-based data to fill in corners 12

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Dumbbell 2 STScI-PRC

Saturn 15

Horsehead 16

Mosaic outlines NGC

Composite 18

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Some PI Science can be aesthetic, but not main driver 20

Events are aesthetic 21

Mars Dust Storm Some aesthetic images capture unexpected science 22

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Saturn “Time Lapse” Observations 24

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NGC 4414 Releasing an image a month since 1998 Drive is aesthetics in addition to science Small allotment of orbits yearly Also augment archival data Hubble Heritage Project 27

Ring Nebula M57 STScI-PRC

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Sombrero Galaxy M104 Globular Cluster Mapping of Sombrero 31

Mz 3 STScI-PRC

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Introduction 41

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Keyhole 45

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Hubble’s 20th Anniversary Image - April

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Search on Hubble Heritage to learn more… 58