The star cluster Westerlund 1

eso_eso1034c August 18th, 2010

Credit: ESO

This image of the young star cluster Westerlund 1 was taken with the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile. Although most stars in the cluster are hot blue supergiants, they appear reddish in this image as they are seen through interstellar dust and gas.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso1034c/

Curator: European Southern Observatory, 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: Westerlund 1
Subject - Milky Way: Star > Grouping > Cluster

Position Details

Position (ICRS): RA = 16h 47m 4.0s; DEC = -45° 51’ 5.5”
Orientation: North is 0.1° CW
Field of View: 5.0 x 5.0 arcminutes
Constellation: Ara

Color Mapping

Telescope	Spectral Band	Wavelength
MPG-2.2m (WFI)	Optical (R)	651.0 nm
MPG-2.2m (WFI)	Optical (V)	539.0 nm
MPG-2.2m (WFI)	Optical (B)	451.0 nm

ID: eso1034c
Subject Category: B.3.6.4
Subject Name: Westerlund 1
Credits: ESO

Release Date: 2010-08-18T12:00:00
Lightyears
Redshift
Reference Url: https://www.eso.org/public/images/eso1034c/

Type: Observation
Image Quality
Distance Notes: Distance in light years from ESO.

Facility: MPG/ESO 2.2-metre telescope, MPG/ESO 2.2-metre telescope, MPG/ESO 2.2-metre telescope
Instrument: WFI, WFI, WFI
Color Assignment: Red, Green, Blue

Band: Optical, Optical, Optical
Bandpass: R, V, B
Central Wavelength: 651, 539, 451

Start Time
Integration Time
Dataset ID
Notes

Coordinate Frame: ICRS
Equinox: J2000
Reference Value: 251.766759, -45.851517
Reference Dimension: 1261.0, 1261.0

Reference Pixel: 602.210954694, 637.735395604
Scale: -6.605148e-05, 6.605148e-05
Rotation: -0.12276655048
Coordinate System Projection:: TAN

Quality: Full
FITS Header
Notes

Creator (Curator): European Southern Observatory
URL: http://www.eso.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: European Southern Observatory
Publisher ID: eso
Resource ID: eso1034c

Resource URL: https://www.eso.org/public/archives/images/original/eso1034c.tif
Related Resources

Metadata Date: 2010-08-11T13:26:40+02:00
Metadata Version: 1.1

Detailed color mapping information coming soon...

There is no distance meta data in this image.