OI Jet in HN Tau

The extraction method for slitless images. The jet extends just below the stellar spectrum in (a), and the [O I] 6300A line is easy to see in the extracted spectrum (b). The jet clearly extends to the SSE of the star when the stellar continuum is subtracted (c). Residuals from the subtraction are masked in (d), which is now rotated so north is up and east to the left. Combining this image with a similar one derived from a different position angle (e) yields the final, combined image (f). Adjacent contour levels are separated by factors of two. The lowest contour corresponds to 3.2x10^-17 erg cm^-2 s^-1 per pixel.