A matter of distance

Esahubble_potw1717a_1024

esahubble_potw1717a April 24th, 2017

Credit: ESA/Hubble & NASA

In space, being outshone is an occupational hazard. This NASA/ESA Hubble Space Telescope image captures a galaxy named NGC 7250. Despite being remarkable in its own right it has bright bursts of star formation and recorded supernova explosions it blends into the background somewhat thanks to the gloriously bright star hogging the limelight next to it. This bright object is a single and little-studied star named TYC 3203-450-1, located in the constellation of Lacerta (The Lizard), much closer than the much more distant galaxy. Only this way a normal star can outshine an entire galaxy, consisting of billions of stars. Astronomers studying distant objects call these stars foreground stars and they are often not very happy about them, as their bright light is contaminating the faint light from the more distant and interesting objects they actually want to study. In this case TYC 3203-450-1 million times closer than NGC 7250 which lies over 45 million light-years away from us. Would the star be the same distance as NGC 7250, it would hardly be visible in this image.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/potw1717a/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details Image Details

Image Type
Observation
Object Name
NGC 7250 TYC 3203-450-1
Subject - Local Universe
Star
Galaxy
Esahubble_potw1717a_128
 

Position Details Position Details

Position (ICRS)
RA = 22h 18m 19.0s
DEC = 40° 33’ 9.7”
Orientation
North is 75.0° CW
Field of View
2.7 x 2.7 arcminutes
Constellation
Lacerta

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (WFC3) Optical (Very Broad) 350.0 nm
Green Hubble (WFC3) Optical (V) 555.0 nm
Red Hubble (WFC3) Optical (I) 814.0 nm
Orange Hubble (WFC3) Infrared (H) 1.5 µm
Spectrum_base
Blue
Green
Red
Orange
Esahubble_potw1717a_1280
×
ID
potw1717a
Subject Category
C.3   C.5  
Subject Name
NGC 7250, TYC 3203-450-1
Credits
ESA/Hubble & NASA
Release Date
2017-04-24T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw1717a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3
Color Assignment
Blue, Green, Red, Orange
Band
Optical, Optical, Optical, Infrared
Bandpass
Very Broad, V, I, H
Central Wavelength
350, 555, 814, 1545
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
334.579143037, 40.5527027588
Reference Dimension
4104.0, 4104.0
Reference Pixel
2052.0, 2052.0
Scale
-1.09986784678e-05, 1.09986784678e-05
Rotation
-75.000000000000028
Coordinate System Projection:
TAN
Quality
Full
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
potw1717a
Metadata Date
2016-11-26T17:42:27+01:00
Metadata Version
1.1
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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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