Supernova in M61

[astroron (Ron)]

A Supernova has now been confirmed in M61.
Image and details.
Possible SN in M61
Написал: Короткий Стас в категорию Новые, сверхновые и гамма-всплески.

D. Denisenko (IKI), S. Korotkiy (Ka-Dar observatory) and T. Kryachko
(Astrotel observatory) confirm the possible supernova in M61 on their
images obtained with 80-mm f/7.5 refractor and CCD SBIG-ST2000XM. They
report the following astrometry with the reference to 2UCAC catalogue
(accuracy 0.2″): R.A. = 12h22m01s.75, Decl. = +04o28′48″.1. Unfiltered
CCD magnitude with red zero-point (USNO-A2.0): Dec. 29.05 UT, 15.1.

Confirm the possible supernova in M61

[astroron (Ron)]

The latest Mag estimate is 14.3 and brightening

[ngcles]

Hi Ron & All,

You beat me to it Ron!

This one ought to be relatively easy to image and visually observe -- provided you are up early enough.

Should still be bright enough in a month when M61 is in a better (more convenient time ) position to observe. A 12" in relatively dark skies should do the trick visually and in a week or so when at maximum brightness maybe a 10"

Get to it!


Best,

Les D

[Ian Robinson]

15.1 mag detection of supernova in M61 on their images obtained with a 80-mm f/7.5 refractor and CCD SBIG-ST2000XM???

That's pretty good going even with a good quality CCD camera ....

Didn't think it would be possible to drill that deep with an 80mm objective , must have taken a lot of very long exposures all stacked to get that.

[astroron (Ron)]

I must make a correction the image in my first post is not the image provided with the observation
This is the correct one

[renormalised (Carl)]

Написал: Короткий Стас в категорию Новые, сверхновые и гамма-всплески.

Rough translation.... Written : Korotkiy stas (???) a new category, supernova in gamma vspleski (???)

Not sure what stas and vspleski are

Be interesting to do some follow up obs, if only the clouds would bugger off

[bojan]

I think it can be freely translated as follows:
"Written by Korotkiy Stas (that is the name of autor), in the category (section) of "Novae, Supernovae and Gamma-ray bursts"
"vspleski" means "bursts".

http://www.astronet.ru/db/varstars/msg/1232097

[renormalised (Carl)]

Thanks... I was trying to figure out what the "stas" was. Should've figured it for a first name!!

[astroron (Ron)]

I was able to observe S/N 2008in in M61 (NGC4303) at 01:30 this morning,
the seeing was about 7-10, 10 being the best.
I observed the galaxy for some time before the supernova became apparent.
It seemed a bit fainter than the given Mag 14.3, but as the galaxy got higher it was much clearer.
Saturn was absalutly Fabulous with the ring shadow and three moons close to the ring plain
The Moons could be seen to move over a couple of hours.
In a 6mm Radian,(304xmag) was the sharpest I have seen Saturn in a very long time
Wes (Zubenel) was with with me and as well as confirming the observation of the Supernova was just blown away by the view of Saturn.
Called it a night at 03:30 due to mist rising, but it did its old trick in that as soon as I had packed up, it cleared away
A great nights observing

[ngcles]

HI Ron,

Thanks for the report -- I assume it was the 40cm you were using?

1.30am -- it must have been low on the horizon but I guess the difference in latitude between here and the Sunshine Coast would make a difference too.

Good to hear it was a good night. Saturn is always special but even more so in really good seeing.


Best,

Les D

[astroron (Ron)]

Originally Posted by ngcles

HI Ron,

Thanks for the report -- I assume it was the 40cm you were using?

1.30am -- it must have been low on the horizon but I guess the difference in latitude between here and the Sunshine Coast would make a difference too.

Good to hear it was a good night. Saturn is always special but even more so in really good seeing.


Best,

Les D

Thanks Les, yes it was the 40cm,I started the observation at around 01:00 but was unable to see the S/N but after going back quite a few times was able to see the S/N deffinatly about 02:00.
The galaxy was then nearly 30degs in altitude, so was a reasonable altitude.
I think if I had waited for another hour it would have been even better