# Additional maps

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## Overview

This section describes products that require special processing. Only one such product is available at this time; this section will be expanded with time as more products are added.

## Lensing map

We distribute the minimum-variance (MV) lensing potential estimate presented in [1] as part of the 2014 data release. This map represents an estimate of the CMB lensing potential on approximately 70% of the sky, and also forms the basis for the Planck 2014 lensing likelihood. It is produced using filtered temperature and polarization data from the SMICA DX11 CMB map; its construction is discussed in detail in [1].

The estimate is contained in a single gzipped tarball named COM_CompMap_Lensing_2048_R0.00.tgz. Its contents are described below.

Contents of COM_CompMap_Lensing_2048_R0.00.tgz
Filename Format Description
dat_klm.fits HEALPIX FITS format alm, with Contains the estimated lensing convergence .
mask.fits.gz HEALPIX FITS format map, with Contains the lens reconstruction analysis mask.
nlkk.dat ASCII text file, with columns = (, , ) The approximate noise (and signal+noise, ) power spectrum of , for the fiducial cosmology used in [1].

TBW

## References

Cosmic Microwave background

Flexible Image Transfer Specification