(V-I) colour index in NGC 1232

Eso_eso9920l_1024

eso_eso9920l February 27th, 1999

Credit: ESO

This "(V-I) colour-index image" was produced in the same way as eso9920k. It is based on two other exposures, taken on the same date, through a visual-green filter (V) and a near-infrared-red filter (I), respectively. The exposure time was 3 min for both. The field size and orientation is the same. The round, dark spot at the upper left is an artefact. Dust lanes in the spiral arms absorb more green light and therefore appear redder than their surroundings. In this differential image, they are seen as dark regions. They are exceptionally sharp and particularly strong in the inner part of the galaxy.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso9920l/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

View Options

Download Options

Image Details

Image Type
Observation
Object Name
NGC 1232
Subject - Local Universe
Galaxy > Type > Spiral

Color Mapping

  Telescope Spectral Band Wavelength
Orange VLT (FORS1) Infrared (I) -
Orange VLT (FORS1) Optical (V) -
Eso_eso9920l_1280
×
ID
eso9920l
Subject Category
C.5.1.1  
Subject Name
NGC 1232
Credits
ESO
Release Date
1999-02-27T00:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso9920l/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope, Very Large Telescope
Instrument
FORS1, FORS1
Color Assignment
Orange, Orange
Band
Infrared, Optical
Bandpass
I, V
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
1152.0, 1277.0
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
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
eso9920l
Metadata Date
2009-02-04T14:25:04+01:00
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.

 

Providers | Sign In