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Hi Trevor,
Thanks for asking.
The 3 galaxies each had their first supernova discovery.
NGC6722 & IC2160 were type 1a events -incineration of a white dwarf - my condolences to snow white....
NGC5967 type 1c -probable Hypernova.
All 3 are very Southern galaxies as my 1000 or so targets are all South of -40, and all are spiral galaxies brighter than mag 14. As I regularly image about 100 galaxies per night I figure my odds are pretty good.
Perhaps more interesting is that my visual search scanned some 5000 plus galaxies with no result. My first (ccd) SN came after 12,000 images, second after 1700 images and third after 1500 images.
I check my images as I go rather than the next day as many I know do, as I figure I have a better chance of discovery and reporting quickly.
TG Tan (Western Australia - has 3 discoveries) has an article in the current US Sky & Tel (and hopefully in OZ) about Supernova hunting on a shoestring - ie 9.25inch Celestron and homebuilt ccd.
PeterM.
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