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Galactic Dust Reddening and Extinction

You can specify coordinate by selecting a position on the above all sky map.

Computes the interstellar reddening for a line of sight and/or region of the sky, returning the corresponding 100 um intensity, reddening maps, region statistics and estimated Galactic extinction. The reddening is derived using the data and technique that Schlegel, Finkbeiner & Davis (1998) pioneered combining the strengths of IRAS and COBE/DIRBE. The user should beware that the technique is restricted by both spatial resolution limitations and assumptions that are used to derive the dust temperature along the line of sight. Read more on the science background, technique and cautionary notes here . The image above shows an All Sky view of the IRAS 100 um imaging data, representing a MONTAGE-generated combination of the individual images created by Schlegel, Finkbeiner & Davis (1998).

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Image Size:             (2.0 to 37.5 deg)

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Coordinate Examples:           19h17m32s 11d58m02s Equ J2000  |   46.5377 -0.2518 ga  |  M 31 Instructions
Default Coordinate System:  Equatorial J2000