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Foreground Data

Reddening (E(B_V)) Map (Lenz et al. 2017)

The sky maps are generated using the HEALPix sky pixelization scheme. The first file listed for each data product contains the data in its native HEALPix format. For the convenience of users who do not require the capabilities that HEALPix offers, we also provide the maps in two projected image formats: Mollweide and Zenith Equal Area (ZEA). These files contain the string "_mollweide" and "_zea" respectively, and may be displayed with standard astronomical display software such as DS9 and SAOImage.

Recommended download procedure for '.fits' or '.tar.gz' files:
right click on the file name and save. For more information on the use of Dataset IDs,
see the LAMBDA Products Overview.

Reddening E(B-V) Map
Description
File Info
File Name
Delivery Date
E(B-V) Lenz et al. 2017 49 MB
FITS Hdr
ebv_lhd.hpx.fits
2017-06-17
E(B-V) Lenz et al. 2017 67 MB
FITS Hdr
lambda_zea_ebv_lhd.fits
2017-09-14
E(B-V) Lenz et al. 2017 67 MB
FITS Hdr
lambda_mollweide_ebv_lhd.fits
2017-09-01
N(HI) for |v_lsr| < 90 km s-1 49 MB
FITS Hdr
mom0_-90_90_1024.hpx.fits
2017-07-06
N(HI) for |v_lsr| < 90 km s-1 67 MB
FITS Hdr
lambda_zea_mom0_-90_90.fits
2017-09-14
N(HI) for |v_lsr| < 90 km s-1 67 MB
FITS Hdr
lambda_mollweide_mom0_-90_90.fits
2017-09-01

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Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason