IPHAS (INT Photometric Hα Survey of the Northern Galactic Plane) maps the northern Galactic Plane in Hα, r′ and i′ filters using the Wide Field Camera on the 2.5-m Isaac Newton Telescope at La Palma, covering |b| < 5° to a depth of r′ = 20 (10σ). CASU provided data processing for the survey and its Initial Data Release covering September 2003 to December 2005.
The INT Photometric Hα Survey of the Northern Galactic Plane (IPHAS; Drew et al. 2005) maps the northern Galactic Plane between latitudes of −5° and +5° in the Hα, r′ and i′ bands. It uses the Wide Field Camera on the 2.5-metre Isaac Newton Telescope (INT) on La Palma and reaches r′ = 20 at 10σ.
The Initial Data Release (IDR; Gonzalez-Solares et al. 2008) was the first large public release. It contains images and catalogues from 212 nights of observing between September 2003 and December 2005, by which time about 60% of the survey area had been observed to the final survey quality.
Science goals
IPHAS was designed for systematic studies of objects with emission lines across the northern Galactic Plane, such as:
- stars with Hα emission, including Be stars, T Tauri stars and Herbig Ae/Be stars
- planetary nebulae and the stars that produce them
- symbiotic stars, cataclysmic variables and novae
- stellar populations along the Galactic Plane, including photometric distances
Instrument and survey setup
| Telescope | 2.5-m Isaac Newton Telescope (INT), La Palma |
|---|---|
| Camera | Wide Field Camera (WFC), about 0.29 deg² |
| Filters | Hα, r′, i′ |
| Depth | r′ = 20 (10σ) |
| Coverage | Northern Galactic Plane, |b| < 5° |
