Spectroscopy and magnitude

Home Forums Variable Stars IX Dra: observations requested Spectroscopy and magnitude

Stewart John Bean

Robin , How bright does a star need to be to obtain a decent S/N ratio spectrum?

IX Dra is a bit faint perhaps, but ER Uma is brighter (V mag 13 maximum and better placed for observations ) and also approaching a superoutburst. See Discussion Forum on ER Uma and RZ Lmi.