S i H bbl ’ U iSeeing Hubble’s Universehubblesource.stsci.edu/services/events/telecons/... · S...
37
S i H bbl ’ Ui S i H bbl ’ Ui Seeing Hubble’s Universe Seeing Hubble’s Universe Making Pictures from Data Making Pictures from Data Zolt Levay Zolt Levay Space Telescope Science Institute Office of Public Space Telescope Science Institute Office of Public Outreach Outreach
Transcript of S i H bbl ’ U iSeeing Hubble’s Universehubblesource.stsci.edu/services/events/telecons/... · S...
S i H bbl ’ U iS i H bbl ’ U iSeeing Hubble’s UniverseSeeing Hubble’s UniverseMaking Pictures from DataMaking Pictures from Data
Zolt LevayZolt LevayySpace Telescope Science Institute Office of Public
ySpace Telescope Science Institute Office of Public
OutreachOutreach
From This…From This…
2
…To This…To This
3
Pictures from DataPictures from Data
Byproduct of science dataByproduct of science data.Combine exposures, scale data.Reconstruct color.Photography techniques make features in thePhotography techniques make features in the data visible.
4
Opportunities | ChallengesOpportunities | Challenges
Available dataAvailable dataBrightness rangeSpatial coverageSpectral coverageSpectral coverageCosmetics
5
Cosmic RaysCosmic Rays
6
Cosmic RaysCosmic Rays
7
Cosmic Rays RemovedCosmic Rays Removed
8
Enhance Brightness & ContrastEnhance Brightness & Contrast
9
Enhance Brightness & ContrastEnhance Brightness & Contrast
10
Enhance Brightness & ContrastEnhance Brightness & Contrast
11
Enhance Brightness & ContrastEnhance Brightness & Contrast
12
Spatial DimensionSpatial Dimension
13
ExposuresExposures
14
MosaicMosaic
15
Luminosity DimensionLuminosity Dimension
16
Color DimensionColor Dimension
I V B
17
“Natural” Color Composite“Natural” Color Composite
Red Green Blue
18
“Natural” Color Composite“Natural” Color Composite
Red Green Blue
19
Alternate Color AssignmentAlternate Color Assignment[N II] H⟨ [O III]
Red Red Cyan
20
Alternate Color AssignmentAlternate Color Assignment[N II] H⟨ [O III]
Red Red Cyan
21
Alternate Color AssignmentAlternate Color Assignment[N II] H⟨ [O III]
Red Red Cyan
22
Alternate Color AssignmentAlternate Color Assignment[N II] H⟨ [O III]
Red Green Blue
23
Alternate Color AssignmentAlternate Color Assignment[N II] H⟨ [O III]
Red Green Blue
24
Cosmetic RetouchingCosmetic Retouching
Instrument artifactsInstrument artifactsUneven backgroundNoiseSharpeningSharpening
25
Instrument ArtifactsInstrument Artifacts
CCD charge bleedCCD charge bleed
Clone stamp, healing brushp, g
Copy and rotate
Mask
26
Instrument ArtifactsInstrument Artifacts
CCD charge bleedCCD charge bleed
Clone stamp, healing brushp, g
Copy and rotate
Mask
27
Instrument ArtifactsInstrument Artifacts
CCD charge bleedCCD charge bleed
Clone stamp, healing brushp, g
Copy and rotate
Mask
28
Instrument ArtifactsInstrument Artifacts
CCD charge bleedCCD charge bleed
Clone stamp, healing brushp, g
Copy and rotate
Mask
29
Uneven BackgroundUneven Background
30
Uneven BackgroundUneven Background
31
Uneven BackgroundUneven Background
32
Useful Art/Photography Principles Useful Art/Photography Principles
Color form textureColor, form, texture.Composition, perspective.Lighting, tonality.
33
CompositionComposition
34
CCrop area
35
C dCropped
36
Pictures from DataPictures from Data
Byproduct of science dataByproduct of science data.Photography techniques make features in the d t i ibldata visible.Subjective choices informed by art principles make science images visually more appealing.Nature photographyNature photography.
37
