Full DATA RELEASE 1
Data are now available from Data Release 1 (DR1; Peek et al. 2011). These data can be obtained in multiple formats here.
DATA CUBE ORGANIZATION:
It is a major goal of the GALFA-HI Survey team to provide data cubes to the astronomy community.
The survey is in progress and therefore the data are released in stages as a significant amount of new data are obtained and data reduction is completed. The details of this process can be found in Peek et al. (2011).
The survey is split up into 225 data regions (5 in Dec by 45 in RA) with some overlap. Each region is 512 arcminutes (8 8/15 degrees) on a side, oriented along small-circle RA and Dec. Each region has three data products: A 'wide' band cube with 0.74 km/s resolution from about -750 to 750 km/s V(LSR), a 'narrow' band cube with 0.18 km/s resolution from -190 to +190 km/s and 512 individual dec slices, stepped in RA, with 0.18 km/s resolution from -750 to 750 V(LSR). The layout on the sky is as shown below:
The below plot shows the fractional area of each tile that has been observed by at least one observing mode (DR1 coverage). DR2 is in the final stages of reduction and will cover the entire area shown.