A close‐up of the Hα feature in 2MASS J1237+65, showing four sets of observations for 2MASS J1237+65 (dash‐dotted lines) and the mean from 1999 July 16 (UT) (solid thick line). Data for SDSS 1346‐00 and SDSS 1624+00 are also shown. Zero levels are indicated by dotted lines, with SDSS 1346‐00 and 2MASS J1237+65 offset vertically by constants of 5 × 10⁻¹⁸ and 10 × 10⁻¹⁸ ergs cm⁻² s⁻¹ Å⁻¹, respectively.