Purple Haze

Eso_potw2119a_1024

eso_potw2119a May 10th, 2021

Credit: ESO

This weeks picture of the week features DG121, an HII region a cloud of ionised hydrogen located in the constellation of Puppis (the Stern). HII regions, a type of emission nebulae, are created when young, massive stars release enough ultraviolet energy to ionise the surrounding gas clouds. These regions tend to have irregular structures and lack sharp boundaries, giving them their hazy, yet photogenic, appearance. The brightest star in the DG121 region, seen near the centre in this picture, is HD60068. This spectacular image was taken with the FORS 2 (FOcal Reducer and low dispersion Spectrograph 2) instrument on ESOs Very Large Telescope in the Chilean Atacama Desert. This instrument has been described by astronomers as "the Swiss army knife of instruments at Paranal", because of its ability to study many different astronomical objects in many different ways.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/potw2119a/

Curator: European Southern Observatory, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
DG121
Subject - Milky Way
Nebula > Appearance > Emission > H II Region
Eso_potw2119a_128
 

Position Details

Position (ICRS)
RA = 7h 32m 10.0s
DEC = -16° 58’ 18.1”
Orientation
North is up
Field of View
7.2 x 7.3 arcminutes
Constellation
Puppis

Color Mapping

  Telescope Spectral Band Wavelength
Red VLT (FORS2) Optical (H-alpha) 656.0 nm
Orange VLT (FORS2) Optical (R) 655.0 nm
Green VLT (FORS2) Optical (V) 557.0 nm
Blue VLT (FORS2) Optical (B) 440.0 nm
Spectrum_base
Red
Orange
Green
Blue
Eso_potw2119a_1280
×
ID
potw2119a
Subject Category
B.4.2.1.1  
Subject Name
DG121
Credits
ESO
Release Date
2021-05-10T06:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/potw2119a/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope, Very Large Telescope, Very Large Telescope, Very Large Telescope
Instrument
FORS2, FORS2, FORS2, FORS2
Color Assignment
Red, Orange, Green, Blue
Band
Optical, Optical, Optical, Optical
Bandpass
H-alpha, R, V, B
Central Wavelength
656, 655, 557, 440
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
113.041520903, -16.9716853814
Reference Dimension
1718.0, 1727.0
Reference Pixel
859.0, 863.5
Scale
-6.99751438666e-05, 6.99751438666e-05
Rotation
-0
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
https://www.eso.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
None
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
potw2119a
Metadata Date
2020-05-07T08:57:28+02:00
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.