Photometry and Low Dispersion Spectroscopy with ESA Gaia

Table 1

Comparison of the parameters of Gaia BR and RP and of selected plate low dispersion spectra.

	Wavelength range, nm	Limiting magnitude	Dispersion at Hgamma, nm/mm	Spectral resolution, nm
Gaia	330–660, 650–1000	~19	900	~18?
Sonneberg Schmidt	340–650	18	10 and 23	~3
Bolivia Expedition	340–650	14	9	~3
Hamburg	340–540	19	139	4.5
Byurakan	340–690	17.5	180	5