Image Details
Caption: Figure 2.
Difference images (narrowband minus luminance) of the area surrounding RS Oph. Images have been 8x8 block-summed and are displayed with linear scaling. RS Oph is marked with red ticks. The NSR is now apparent in the Hα, [N II], and [S II] filters.
© 2025. The Author(s). Published by the American Astronomical Society.