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seeing supernovas


Ursa Major

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Hello,

I see some people on the forum have seen supernovas. They have obviously been seen in other galaxies (or the people seeing them are a few hundred years old).

Is it easy to see them? how bright are they? how often do visible ones occur?

Thank you

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I've seen 2. The 1st (in 30 years in the hobby !) was at the SGL4 Star Party in 2009 and we used a 12" dobsonian and my 13mm Ethos eyepiece. The latest (sn2011b) was earlier this year which I managed to pick up from my back garden, 1st with my 10" newtonian and a couple of nights later with my 6" refractor. Both of these were in the region of magnitude 12.5 or a little dimmer but, once located they were quite distinct, glimmering as a tiny point of light in their home galaxies. I have to say that seeing these with my own eye were some of my best moments in the hobby :D

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If one goes off in a near by galaxy like the andromeda galaxy then i reckon that would be quite bright.

I just read on another web page that:

"There are about 30-40 billiion spiral galaxies in this universe alone much like our own galaxy, which means there are upwards of a billion of these things a year.

Alternatively, that's about 1 supernova every ~2ish seconds:eek:.

Impressive!"

Thats really weird to think.

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