Full DATA RELEASE 1 Data are now available online from the full Data Release 1 (DR1-S & DR1-F). These data can be found here. DATA CUBE ORGANIZATION: The survey is in progress and therefore the data are released in stages as a significant new amount of data is obtained and data reduction is completed. The details of this process can be found in Peek et al. (2010). 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:  We have already covered a significant fraction of the Arecibo sky. The below plot shows the fractional area of each tile that has been observed by at least one observing mode (DR1 coverage).  The below figure shows the LAB HI survey (0.6 deg resolution; Kalberla et al. 2005) with the entire Arecibo sky that will eventually be observed as part of the GALFA-HI Survey within the red lines. The sky covered by TOGS commensal with ALFALFA is shown by the dark blue boxes and TOGS commensal with AGES by the light blue boxes. The entire Arecibo sky will be covered by TOGS2 (commensal with GALFACTS).  |