NGC 3021 NICMOS/ACS detail 3

Esahubble_opo0908e_1024

esahubble_opo0908e May 7th, 2009

Credit: NASA, ESA and A. Riess (STScI/JHU)

This image is part of a montage of images of the spiral galaxy NGC 3021 taken by the NASA/ESA Hubble Space Telescope. Hubble made precise measurements of Cepheid variable stars in the galaxy, highlighted in this image. These stars pulsate at a rate that is matched closely to their intrinsic brightness. This makes them ideal for measuring intergalactic distances. The Cepheids are used to calibrate an even brighter milepost marker that can be used over greater distances, a Type Ia supernova. The supernova was observed in the galaxy in 1995. The image was taken with the Near Infrared Camera and Multi-Object Spectrometer (NICMOS).

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/opo0908e/

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
NGC 3021
Subject - Local Universe
Star > Type > Variable
Galaxy > Type > Spiral
Esahubble_opo0908e_128
 

Position Details

Position (ICRS)
RA = 9h 50m 57.3s
DEC = 33° 33’ 37.0”
Orientation
North is 153.5° CCW
Field of View
0.3 x 0.3 arcminutes
Constellation
Leo Minor

Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (NICMOS) Infrared (H) 1.6 µm
Green Hubble (ACS) Infrared (I) 814.0 nm
Blue Hubble (ACS) Optical (V) 555.0 nm
Spectrum_base
Red
Green
Blue
Esahubble_opo0908e_1280
×
ID
opo0908e
Subject Category
C.3.2.1   C.5.1.1  
Subject Name
NGC 3021
Credits
NASA, ESA and A. Riess (STScI/JHU)
Release Date
2009-05-07T15:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/opo0908e/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
NICMOS, ACS, ACS
Color Assignment
Red, Green, Blue
Band
Infrared, Infrared, Optical
Bandpass
H, I, V
Central Wavelength
1600, 814, 555
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
147.738893214, 33.560283502
Reference Dimension
506.0, 506.0
Reference Pixel
253.0, 253.0
Scale
-1.13666143691e-05, 1.13666143691e-05
Rotation
153.49999999999997
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
opo0908e
Metadata Date
2009-05-07T16:26:16+02:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

×

There is no distance meta data in this image.

 

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