Hubble's high resolution camera - "Mind the Gap"

Esahubble_opo0534m_1024

esahubble_opo0534m November 3rd, 2005

Credit: NASA, ESA, and Z. Levay (STScI)

The Advanced Camera for Surveys on Hubble Space Telescope includes two cameras, the Wide Field Channel (WFC) and the High Resolution Channel (HRC). Images from the WFC are roughly 4,000 pixels square with a scale of roughly 0.05 arcseconds per pixel. Images from the HRC are smaller in pixel size, 1,000 pixels square, but have a finer resolution, 0.025 arcseconds per pixel. The HRC is preferred for images of planets, or objects appearing smaller on the sky, where higher resolution outweighs larger field of view. The HRC also has two occulting masks that can block starlight from bright sources, and allow fainter objects nearby that are otherwise lost in the glare of the brighter object to be visible. One of the masks can be removed, but the other mask, seen in this Mars image at the lower left corner, can not be moved out of the light path. This "occulting finger" blocked a small portion of the light from Mars. The small amount of missing data in the final colour composite of Mars was corrected by filling with nearby sections of the image of similar colour and texture. This is a method commonly used in digital photography to remove blemishes, but is not used with data published in scientific papers.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/opo0534m/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type
Observation
Object Name
Mars
Subject - Solar System
Planet

Color Mapping

  Telescope Spectral Band Wavelength
Grayscale Hubble (WFPC2) Optical (R) 658.0 nm
Grayscale Hubble (WFPC2) Optical (V) 502.0 nm
Grayscale Hubble (WFPC2) Ultraviolet (Mid-UV) 250.0 nm
Spectrum_base
Grayscale
Grayscale
Grayscale
Esahubble_opo0534m_1280
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ID
opo0534m
Subject Category
A.1  
Subject Name
Mars
Credits
NASA, ESA, and Z. Levay (STScI)
Release Date
2005-11-03T15:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/opo0534m/
Type
Observation
Image Quality
Distance Notes
N/A
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFPC2, WFPC2, WFPC2
Color Assignment
Grayscale, Grayscale, Grayscale
Band
Optical, Optical, Ultraviolet
Bandpass
R, V, Mid-UV
Central Wavelength
658, 502, 250
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
1000.0, 1000.0
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org/
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
opo0534m
Metadata Date
2005-11-02T12:57:50-05:00
Metadata Version
1.0
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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