(V-I) Colour Index in NGC 1232

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.

Credit:

ESO

About the Image

Id:eso9920l
Type:Observation
Release date:27 February 1999
Related releases:eso9920, eso9916
Size:1152 x 1277 px

About the Object

Name:NGC 1232
Type:• Local Universe : Galaxy : Type : Spiral
• X - Galaxies
Distance:60 million light years
Constellation:Eridanus

Image Formats

Large JPEG
1.5 MB

Wallpapers

1024x768
744.4 KB
1280x1024
1.1 MB
1600x1200
1.3 MB
1920x1200
1.3 MB
2048x1536
1.8 MB

Coordinates

Position (RA):3 9 45.58
Position (Dec):-20° 34' 45.80"

Colours & filters

BandTelescope
Optical
V
Very Large Telescope
FORS1
Infrared
I
Very Large Telescope
FORS1

 

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