Hemisphere:  Southern  ·  Constellation: Carina (Car)  ·  Contains:  NGC 3532  ·  NGC3532  ·  Wishing Well Cluster  ·  x Car
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a colored open cluster from the South : NGC 3532, 



    
        

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a colored open cluster from the South : NGC 3532

Getting plate-solving status, please wait...
a colored open cluster from the South : NGC 3532, 



    
        

            Los_Calvos
Powered byPixInsight

a colored open cluster from the South : NGC 3532

Imaging telescopes or lenses: PlaneWave Instruments CDK 12.5"

Imaging cameras: Moravian Instrument G4-16000

Mounts: Astro-Physics Inc AP 1100 GTO

Guiding telescopes or lenses: PlaneWave Instruments CDK 12.5"

Guiding cameras: Atik 414EX

Software: TheSkyX  ·  Adobe Photoshop CC 2020  ·  Pixinsight  ·  MaxPilote  ·  FocusMax4

Filters: Chroma Technology Chroma Ha 3nm  ·  Chroma Technology Chroma OIII 3nm  ·  Chroma Technology Chroma Blue  ·  Chroma Technology Chroma Green  ·  Chroma Technology Chroma R  ·  Chroma Technology Chroma L  ·  Chroma Technology Chroma SII 3nm

Accessory: Skyméca DO 3"


Dates:March 7, 2021March 8, 2021March 9, 2021March 10, 2021

Frames:
Chroma Technology Chroma Blue: 27x300" (2h 15') -20C bin 1x1
Chroma Technology Chroma Green: 11x300" (55') -20C bin 1x1
Chroma Technology Chroma Ha 3nm: 32x1200" (10h 40') -20C bin 1x1
Chroma Technology Chroma R: 16x300" (1h 20') -20C bin 1x1

Integration: 15h 10'

Darks: ~55

Flats: ~7

Bias: ~200

Avg. Moon age: 25.18 days

Avg. Moon phase: 20.79%

Bortle Dark-Sky Scale: 1.00


Astrometry.net job: 4531498

RA center: 11h 6' 3"

DEC center: -58° 50' 28"

Pixel scale: 0.732 arcsec/pixel

Orientation: 1.385 degrees

Field radius: 0.589 degrees


Resolution: 4096x4096

Data source: Own remote observatory

Remote source: Observatorio El Sauce

Description

NGC 3532 is a bright open cluster located some 1,300 light-years away in the constellation of Carina (The Keel of the ship Argo). It is informally known as the Wishing Well Cluster, as it resembles scattered silver coins which have been dropped into a well. It is also referred to as the Football Cluster, although how appropriate this is depends on which side of the Atlantic you live. It acquired the name because of its oval shape, which citizens of rugby-playing nations might see as resembling a rugby ball.

This very bright star cluster is easily seen with the naked eye from the southern hemisphere. It was discovered by French astronomer Nicolas Louis de Lacaille whilst observing from South Africa in 1752 and was cataloged three years later in 1755. It is one of the most spectacular open star clusters in the whole sky.

NGC 3532 covers an area of the sky that is almost twice the size of the full Moon. It was described as a binary-rich cluster by John Herschel who observed “several elegant double stars” here during his stay in southern Africa in the 1830s. Of additional, much more recent, historical relevance, NGC 3532 was the first target to be observed by the NASA/ESA Hubble Space Telescope, on 20 May 1990.

This grouping of stars is about 300 million years old. This makes it middle-aged by open star cluster standards [1]. The cluster stars that started off with moderate masses are still shining brightly with blue-white colors, but the more massive ones have already exhausted their supplies of hydrogen fuel and have become red giant stars. As a result the cluster appears rich in both blue and orange stars. The most massive stars in the original cluster will have already run through their brief but brilliant lives and exploded as supernovae long ago. There are also numerous less conspicuous fainter stars of lower mass that have longer lives and shine with yellow or red hues. NGC 3532 consists of around 400 stars in total.

The background sky here in a rich part of the Milky Way is very crowded with stars. Some glowing red gas is also apparent, as well as subtle lanes of dust that block the view of more distant stars. These are probably not connected to the cluster itself, which is old enough to have cleared away any material in its surroundings long ago.

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a colored open cluster from the South : NGC 3532, 



    
        

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