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We discuss wide‐field near‐infrared (near‐IR) imaging of the NGC 1333, L1448, L1455 and B1 star‐forming regions in Perseus. The observations have been extracted from a much larger narrow‐band imaging survey of the Taurus–Auriga–Perseus complex. These H 2  2.122‐μm observations are complemented by broad‐band  K  imaging, mid‐IR imaging and photometry from the  Spitzer Space Telescope , and published submillimetre CO   J = 3–2  maps of high‐velocity molecular outflows. We detect and label 85 H 2  features and associate these with 26 molecular outflows. Three are parsec‐scale flows, with a mean flow lobe length exceeding 11.5 arcmin. 37 (44 per cent) of the detected H 2  features are associated with a known Herbig–Haro object, while 72 (46 per cent) of catalogued HH objects are detected in H 2  emission. Embedded  Spitzer  sources are identified for all but two of the 26 molecular outflows. These candidate outflow sources all have high near‐to‐mid‐IR spectral indices (mean value of  α∼ 1.4 ) as well as red IRAC 3.6–4.5 μm and IRAC/MIPS 4.5–24.0 μm colours: 80 per cent have [3.6]–[4.5] &gt; 1.0 and [4.5]–[24] &gt; 1.5. These criteria – high α and red [4.5]–[24] and [3.6]–[4.5] colours – are powerful discriminants when searching for molecular outflow sources. However, we find no correlation between α and flow length or opening angle, and the outflows appear randomly orientated in each region. The more massive clouds are associated with a greater number of outflows, which suggests that the star formation efficiency is roughly the same in each region.

A shallow though extensive H 2 2.122‐μm imaging survey of Taurus–Auriga–Perseus – I. NGC 1333, L1455, L1448 and B1