The VLT images a "rectangular" planetary nebula

IC 4406 is a planetary nebula with an unusual, almost "rectangular" shape. It is located in the southern constellation Lupus (the Wolf). The distance is somewhat uncertain, possibly around 5,000 light-years. Like the Butterfly Nebula (cf. VLT UT1 First Light Photo No. 4), IC 4406 belongs to the class of bipolar nebulae. However, the dark and dusty central band (the "disc-like structure") is less pronounced in this object and the internal structure is more uniform. The different colours correspond to regions of different composition and physical properties.

This is a combination of two 5-min B (blue) exposures (seeing 0.95 arcsec), two 5-min V (green-yellow) exposures (0.90 arcsec), and one 5-min and two 2-min R (red) exposures (0.70 to 0.90 arcsec) with the VLT Test Camera. Individual frames were flat-fielded and cleaned for cosmics before colour combination; there was no further image processing. The field measures 1.5 x 1.5 arcmin. North is to the upper right; East is to the upper left.

Crediti:

ESO

Riguardo l'immagine

Identificazione:eso9827a
Tipo:Osservazione
Data di rilascio:23 Giugno 1998
Notizie relative:eso9827
Grandezza:2340 x 2557 px

Riguardo all'oggetto

Nome:IC 4406
Tipo:Milky Way : Nebula : Type : Planetary
Distanza:5000 Anni luce
Constellation:Lupus
Categoria:Nebulae

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Coordinate

Position (RA):14 22 26.29
Position (Dec):-44° 9' 5.34"
Field of view:1.43 x 1.51 arcminutes
Orientazione:Il Nord è a 44.8° a destra della verticale

Colori e filtri

BandaTelescopio
Ottico
B
Very Large Telescope
Ottico
V
Very Large Telescope
Ottico
R
Very Large Telescope

 

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