Use the boxes at left to create a query on the ALFALFA database. Use the drop down menus to choose appropriate units for your research. Please refer to the series of ALFALFA publications for detailed descriptions of the observations, descriptions and data analysis techniques.

Current ALFALFA coverage (J2000):
Catalog 1 (Giovanelli et al.):

11^h45^m < RA < 14^h05^m

11°50' < Dec < 16°05'

Catalog 2 (Saintonge et al.):

22^h00^m < RA < +03^h00^m

+26°00' < Dec < +28°00'

Catalog 3 (Kent et al.):

11^h36^m < RA < +13^h52^m

+07°00' < Dec < +12°05'

Click here to view a map of current ALFALFA coverage (VO Footprint services).