tried again (Bradford)

Had another go at Sirius, now west of the meridian. Bracketed... This is a fairly exposure, less than half a second.

Celestron 8, Vixen Super Polaris-IDEA GoToStar, William Optics external focuser, manually focused, Canon 40D (unmodified), Tele Vue PowerMate 2x, Canon EOS Utility, IOGEAR USB-ethernet extension, 0.3 seconds, ISO 1600, RAW, daylight white balance. Tanked the contrast in Canon Digital Photo Professional 4.

Note! North to bottom-left; east to bottom-right.

PPM 217620 is just barely visible at the top-centre of the image.

Sirius B should be around the 5 o'clock position...

I do not see The Pup.