Observation by Paul Leyland: And now for something completely differe...
Uploaded by
Dr Paul Leyland
Observer
Paul Leyland
Observed
2018 Nov 30 - 04:04
Uploaded
2019 Jan 09 - 11:38
Equipment
- 0.4m Dilworth-Relay
- SBIG-8 with AO-7 autoguider
Exposure
0.11s
Location
Tacande Observatory
Target name
α CMa B
Title
And now for something completely different --- not an image of HL CMa
About this image
I was observing HL CMa, which is uncomfortably close to Sirius both for visual and CCD observers but at least there is a nice bright guide star nearby. Grotesquely over-bright, even with the minimum exposure time of 0.11s possible with a SBIG-8 / AO-7 combination . While waiting for the photons to arrive from the VS, I noticed to my surprise that Sirius B was occasionally visible in the guiding window.
After completing the real observation I took 100 minimum exposures of Sirius and selected the best one. Luckily the secondary is well away from the CCD blooming from Sirius which ran from top to bottom of the full frame, only a portion of which is displayed here.
An observation which was both serendipitous and Lucky.
Files associated with this observation
Like this image
Jeremy Shears,
Graham Winstanley,
Callum Potter,
Ian Rothwell,
Martin Lewis,
Hugh Allen,
Andy Wilson,
David Basey,
Peter Carson,
John McCue,
Derek Robson
Copyright of all images and other observations submitted to the BAA remains with the owner of the work.
Reproduction of work by third parties is expressly forbidden without the consent of the copyright
holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in
any
of our publications.