My first new Supernova observation for 2015.
I have observed the PSN J7361 in NGC 2442.
Seeing was only average 3-5 Transparency 7/10
16" Newtonian 6mm radian 300 xmag 3.5mm TVNagler 533xmag
Seen with direct vision. estimated mag 15xmag
15/03/15 10:35 UT 20 :35 AEST
This galaxy has a low surface brightness even though it has a given magnitude of 10.4. it has a bright starlike nucleus.
On the meridian at time of observation.
Cheers
It should be a lot higher from your location the chances of a better observation are with you.
On or around the meridian at 10:00 UT 21:00 ASDT.
Cheers
It should be a lot higher from your location the chances of a better observation are with you.
On or around the meridian at 10:00 UT 21:00 ASDT.
Cheers
Sorry Ron, didn't read it carefully enough, that's what comes of trying to read posts while at work!!
I have had a bit of a read up on this galaxy, seems John Herschel recoded it initially as 2 objects so it is recorded as both NGC 2442 and NGC 2443, but it seemed he was seeing patches rather than the whole objects.
It is odd as the entire galaxy was easy to see in my 12" back in Feb 2012 when I nabbed it at Snake Valley.
Hopefully if the SN peaks on the weekend should make a nice sight!!
Gee that's a faint galaxy. I'm taking a bunch of 5 min subs, but the tracking / alignment isn't quite there for the RC8. Will need to work on that. Here's a single 5 min sub, quickly processed. Shows the supernova quite well, I'd say from comparison with my SkyTools map that it is about 13 mag? I could be wrong
Sorry Ron, didn't read it carefully enough, that's what comes of trying to read posts while at work!!
I have had a bit of a read up on this galaxy, seems John Herschel recoded it initially as 2 objects so it is recorded as both NGC 2442 and NGC 2443, but it seemed he was seeing patches rather than the whole objects.
It is odd as the entire galaxy was easy to see in my 12" back in Feb 2012 when I nabbed it at Snake Valley.
Hopefully if the SN peaks on the weekend should make a nice sight!!
Cheers
Malcolm
Malcolm, I can see where John Herschel could mistake it for two objects as the starlike nucleus can at times make it look as two close objects.
Glen Cozens (GlenCon here) estimated that Herschel's 18.5" speculum mirror was the equivalent of a goods 16" mirror of today's telescopes.
My view of the galaxy was not the best, the seeing and transparency was as I said average.
I have seen it much better in the past.
Best of luck with your obs of the SN,let me know how you got on?
I will be interested to see if it is visible in a 12" scope.
Cheers
Gee that's a faint galaxy. I'm taking a bunch of 5 min subs, but the tracking / alignment isn't quite there for the RC8. Will need to work on that. Here's a single 5 min sub, quickly processed. Shows the supernova quite well, I'd say from comparison with my SkyTools map that it is about 13 mag? I could be wrong
Good to see you getting some images Paul.
Bright Supernova http://www.rochesterastronomy.org/snimages/
are still reporting it as 15.3.
Going by your pic I would say it is still around 15, going by those two other stars which are around the same brightness, if not a little fainter.
Cheers
Malcolm, I can see where John Herschel could mistake it for two objects as the starlike nucleus can at times make it look as two close objects.
Glen Cozens (GlenCon here) estimated that Herschel's 18.5" speculum mirror was the equivalent of a goods 16" mirror of today's telescopes.
My view of the galaxy was not the best, the seeing and transparency was as I said average.
I have seen it much better in the past.
Best of luck with your obs of the SN,let me know how you got on?
I will be interested to see if it is visible in a 12" scope.
Cheers
Unfortunately I don't have a 12" anymore, will be make do with the 20". Might try to steal a look through a 12" at the camp on the weekend if I can.
Here's the final image. I think the focus was off a bit. Not sure why, but on my original sub RAW and this processed image, the supernova appears brighter than the adjacent star, which is why I guessed bright than you said Ron.
Tracking and focus was not the best, but the aim was the get the supernova.
Clouded out or Moon in the way every night I had the time...
THE Supernova was observed with ease in the sky glow of the 5 day old moon.in both 16" and 10" scopes.
Best of luck in getting an observation,it will be quite bright for a little while yet.
Cheers
Hi Ron, when was your latest observation? Just wondering if it's still worthwhile. I might get a chance to point a 14" and 18" at it this week, unfortunately from suburbia only. Thanks
Hi Ron, when was your latest observation? Just wondering if it's still worthwhile. I might get a chance to point a 14" and 18" at it this week, unfortunately from suburbia only. Thanks
Hi Mirko,last night,it is still bright at 12.8,should be quite visible in said scopes.
Print off a pic to make sure you have the right star.
The galaxy has a low surface brightness but a bright star like nucleus.
I have attached a pic the SN is marked in the upper hook,the brightest of the three stars.
This was taken when the SN was nearly 14 mag.
Use the little galaxy ESO 59-11 as your guide.
In my scope the small galaxy is below NGC2442 and the SN is too the left of the nucleus.
Cheers