The Arecibo Legacy Fast ALFA Survey

ALFALFA Spring Semester 2009: Completed Observations

As of May 1, 2009, ALFALFA observations are complete for the spring 2009 semester. No more time is scheduled before August 2009 when the fall season commences.

Observations in the R.A. range from 07^h30^m to 16^h30^m in the first survey years focused on the tiles centered at +02, +06, +10 and +14 degrees; this region is now fully ompleted. Some of these data have been included in data releases 1 and 3, and others are in the works; see the links to Publications and Data above.

North of the Arecibo zenith, we completed in 2008 most of the region between +24 and +30 degrees and, in 2009, have extended the coverage now down to +20 degrees..

Note: Starting in Feb 2009, our spring region is being restricted to 09^h to 15^h30^m because of the time allocation conflict with AUDS.

The graphical summaries below indicate the A2010 coverage up to and including the spring 2009 observing season.

Yellow indicates planned observations in pass 1.
Green indicates completed observations in pass 1.
Gold indicates planned observations in pass 2.
Cyan indicates completed observations in pass 2.
Brown indicates poor quality data (hardware failure, gain instability or unusual rfi)
Pink indicates the area to be covered next (may be started but not completed this year)

Click here to see larger version.

The numbers on the left axes refer to the declination setting designations.

Click here to see the actual observing block allocation summary for Spring 2009.

Last modified: Fri May 1 10:03:40 EDT 2009 by martha