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Hubble Science BriefingA Horsehead of a Different ColorApril 25, 2013Zolt Levay ・ STScI

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Horsehead Nebula

Horsehead Nebula IR HST 23rd anniversary Hubble Heritage observations Color composite image 3D visualization

Hubble Science Briefing 4/25/13

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Orion in the sky

Hubble Science Briefing 4/25/13

The Orion constellation

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OrionThe Orion constellation:a closer view

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Orion molecular complex

Digitized Sky SurveyPhoto: David Malin Hubble Science Briefing 4/25/13

Flame Nebula complex + Horsehead Nebula

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Ground/HST comparison

Adam Block Hubble Science Briefing 4/25/13

Ground-based visible-light Hydrogen-α (HST’s WFPC2, 2001)

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HST/WFPC2 2001

Hubble Science Briefing 4/25/13

HST’s WFPC2 (2001)

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ESO VISTA IR

ESO VISTA Hubble Science Briefing 4/25/13

Horsehead/Flame Nebula region (ground-based infrared)

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HST observation footprints

Hubble Science Briefing 4/25/13

HST: WFC3 (IR) + ACS/WFC + WFPC2 (2001)

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HST WFC3 filters

Hubble Science Briefing 4/25/13

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WFC3/IR data

9x18min. F110W J 9x23min. F160W HHubble Science Briefing 4/25/13

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IR Mosaics

Hubble Science Briefing 4/25/13

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Color applied to IR mosaics

Hubble Science Briefing 4/25/13

The color images are a reconstruction or a visualization of the different energies that are inherent in the capture of the light in the images. The colors are not arbitrary.

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Color composite

Hubble Science Briefing 4/25/13 The initial color composite, “flat” in tone, includes some artifacts.

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Adjusted image

Hubble Science Briefing 4/25/13 Completed color composite

16Hubble Science Briefing 4/25/13 Examples of image blemishes

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Annotated image

Hubble Science Briefing 4/25/13

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Visible/IR

Hubble Science Briefing 4/25/13

HST: visible light (2001) HST: infrared light (2013)

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Background detail

Hubble Science Briefing 4/25/13

Distant background galaxies

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JWST

Hubble Science Briefing 4/25/13

• farther into IR than HST• better resolution than HST• launching in 2018

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3D Visualization

Hubble Science Briefing 4/25/13

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3D Visualization

Hubble Science Briefing 4/25/13

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3D Model

Hubble Science Briefing 4/25/13

Reassembling the separate elements, using 3D modeling software

24Hubble Science Briefing 4/25/13

3D model with overlaid HST image

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Horsehead Nebula

Horsehead Nebula IR HST 23rd anniversary Hubble Heritage observations Color composite image 3D visualization

Hubble Science BriefingApril 25, 2013 ■ Zolt Levay, STScI

Hubble Science Briefing 4/25/13