[Dennis]

Hello,

Here are a series of images of Sirius A & B captured from Brisbane on 8th March 2008 using the Tak Mewlon 180 and Televue x2.5 Powermate and later, a TV x3 Barlow.

The seeing was probably 7/10 at best, with spells of 5 to 6/10. The “Pup” (Sirius B) was often visible at the time of capture but as the evening progressed, the slight reduction is seeing made its appearance more sporadic.

In an attempt to verify that I wasn’t “seeing” a processing or system artefact, I rotated the CCD camera approx 90 deg then 180 deg from the starting position and the “Pup” made his appearance in the appropriate location, therefore making this series a good candidate for having captured both A & B.

In visible light Sirius A (Alpha Canis Majoris) is the brightest star in the night sky. SkyTools provides the following data:
AB: -1.44+8.5 mag, PA 97° Sep 8.11" (2008.2)
Sirius is 9 times more brilliant than a standard first magnitude star.

Cheers

Dennis