IC 2581 - Open Cluster in Carina
IC 2581 is a Open Cluster in the Carina constellation. IC 2581 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere.
See also IC 2581 rise and set times.
Given its visual magnitude of 4.3, IC 2581 is barely visible to the naked eye, easily visible with the help of a small binocular.
Photometric information of IC 2581
The following table lists the magnitude of IC 2581 in different bands of the electomagnetic spectrum (when available), from the B band (445nm wavelength, corresponding to the Blue color), to the V band ( 551nm wavelength, corresponding to Green/Yellow color), to the J, H, K bands (corresponding to 1220nm, 1630nm, 2190nm wavelengths respectively, which are colors not visible to the human eye).
For more information about photometry in astronomy, check the photometric system article on Wikipedia.
Apparent size of IC 2581The following table reports IC 2581 apparent angular size. The green area displayed on top of the DSS2 image of IC 2581 is a visual representation of it.
Digitized Sky Survey image of IC 2581
The image below is a photograph of IC 2581 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins).
Celestial coordinates and finder chart of IC 2581
Celestial coordinates for the J2000 equinox of IC 2581 are provided in the following table:
The simplified sky charts below show the position of IC 2581 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.