Image Details
Caption: Figure 12.
A large vampire pixel near the center of R22_S11, as seen in the r-band flat. This clearly shows the central hot vampire pixels, surrounded by a region of depressed signal, with a brighter ring surrounding that caused by local electric field effects. The charge contained in the central pixels is incompletely shifted as the image is read, and that charge leaks out into subsequent rows as it is shifted through the remnant charge. The columns that contain the hot pixels are masked as defects in all processing, as this feature cannot be otherwise corrected.
© 2026. The Author(s). Published by the American Astronomical Society.