Wispy dark clouds

Eso_potw2237a_1024

eso_potw2237a September 12th, 2022

Credit: ESO/VPHAS+ team. Acknowledgement: Cambridge Astronomical Survey Unit

The dark clouds in this image, taken from ESO’s Paranal Observatory in Chile, almost resemble something supernatural, like the wispy trails of ghosts in the sky. But there is no need to call the ghostbusters! These clouds, known as Barnard 92 (right) and Barnard 93 (left) are dark nebulae: they look pitch black because the dense gas and dust they contain block out the background light, creating these hazy ghostlike features. These nebulae are stellar nurseries, where new stars are born out of the collapsing dense gas and dust. This whole region of space imaged here is actually part of a much larger stellar complex, called the Small Sagittarius Star Cloud (or Messier 24, catalogued by Charles Messier in 1764). This area is so rich in stars that it is clearly visible to the naked eye during dark nights, in the constellation of Sagittarius. This image was taken with an enormous 268 million pixel camera called OmegaCAM on the VLT Survey Telescope. OmegaCAM is designed for capturing wide fields like this image, where you could impressively fit four full Moons. This image is part of the VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+), which has mapped diffuse nebulae as well as both young and evolved stars in our galaxy.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/potw2237a/

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
Barnard 92 Barnard 93
Subject - Milky Way
Nebula > Appearance > Dark
Eso_potw2237a_128
 

Position Details

Position (ICRS)
RA = 18h 15m 37.2s
DEC = -18° 10’ 25.2”
Orientation
North is 0.2° CW
Field of View
6.0 x 6.0 arcminutes
Constellation
Sagittarius

Color Mapping

  Telescope Spectral Band Wavelength
Blue VST (OmegaCAM) Optical (g) 480.0 nm
Green VST (OmegaCAM) Optical (r) 625.0 nm
Orange VST (OmegaCAM) Optical (H-alpha) 659.0 nm
Red VST (OmegaCAM) Optical (i) 770.0 nm
Spectrum_base
Blue
Green
Orange
Red
Eso_potw2237a_1280
×
ID
potw2237a
Subject Category
B.4.2.3  
Subject Name
Barnard 92, Barnard 93
Credits
ESO/VPHAS+ team. Acknowledgement: Cambridge Astronomical Survey Unit
Release Date
2022-09-12T06:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/potw2237a/
Type
Observation
Image Quality
Distance Notes
Facility
VLT Survey Telescope, VLT Survey Telescope, VLT Survey Telescope, VLT Survey Telescope
Instrument
OmegaCAM, OmegaCAM, OmegaCAM, OmegaCAM
Color Assignment
Blue, Green, Orange, Red
Band
Optical, Optical, Optical, Optical
Bandpass
g, r, H-alpha, i
Central Wavelength
480, 625, 659, 770
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
273.904989215, -18.1736701294
Reference Dimension
16823.0, 16823.0
Reference Pixel
84115.0, 84115.0
Scale
-5.94203059432e-06, 5.94203059432e-06
Rotation
-0.15999999999999984
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
42,046988252936765808547863034241 5.9420305943208583486892944183559e-6 0,000249844490598
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
potw2237a
Metadata Date
2022-09-06T13:36:12+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.