IPHAS DR2 halpha survey collection

It covers Galactic latitudes |b| %3C 5deg and longitudes l = 30-215deg in the broad-band r, i and narrow-band Halpha filters.Original acknowledgement for data: It makes use of data obtained as part of the INT Photometric Halpha Survey of the Northern Galactic Plane (IPHAS, www.iphas.org) carried out at the Isaac Newton Telescope (INT).

The INT is operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. All IPHAS data are processed by the Cambridge Astronomical Survey Unit, at the Institute of Astronomy in Cambridge. The bandmerged DR2 catalogue was assembled at the Centre for Astrophysics Research, University of Hertfordshire, supported by STFC grant ST/J001333/1.