Nice try guys, weather wins as usual. I also tried but wind and low cloud interfered. The SN appears to be highly dimmed due to its location and has proven to be a challenge for measuring it accurately, but the latest figures indicate a type Ib struggling to be seen through the galactic murk.
I still need to apply darks and flats, but here is the best of what I got last night before the clouds rolled in. Again it is a single 300s image captured at ISO400 and at 1:32 am. I've applied a basic levels and curves to it in PSCS5, saved it as tiff file then cropped and saved as jpeg for uploading.
Had the 28" on 5128 last night and even with wishful thinking I couldn't honestly say I could see the SN at 340x. Tried higher magnification up to 1350x but seeing wouldn't support it. Curt was out there with me and couldn't see anything either.
I'm almost glad you couldn't see it, as it means we wouldn't have picked it up on the weekend if I'd bothered to get out the sn search charts.
Still, no excuse for slackness!
Just goes to show the quality of work Peter and the rest of the BOSS team have achieved, to be able to pick something out of a 30 sec exposure from suburbia that is beyond the limits of a seasoned observer with a good 28 under dark skies who knew exactly where to look!
Cheers,
Andrew.
Quote:
Originally Posted by sn1987a
Had the 28" on 5128 last night and even with wishful thinking I couldn't honestly say I could see the SN at 340x. Tried higher magnification up to 1350x but seeing wouldn't support it. Curt was out there with me and couldn't see anything either.
my plan was to do some imaging and then nab the SN at the end of the sesh when ngc 5128 was higher up. when this happened my computer started playing up so no pic from me. a bit annoying as weather was still good at 4am and now the rest of the week isn't looking so good for later in the evening. but still a murky chance.
Here is a crop of a 300s image at 1600 I took at about 1am on Sunday morning through my ED80.
There is a bulge just to the right of the star near middle which wasn't on an image I took a few days before and seems to match the SN
Haven't processed this at all apart from resizing and some pretty heavy handed cropping!!
Took another image last night that shows it clearly, will try to post that tonight.
And another Atel (that makes 6 of them now) adding to the mystery of what it actually is....Is it actually SN type IIb now?...obviously more spectra to be done yet.
That's the third attempt to classify it, and its still not settled. I've never seen this before...this one is proving to be very interesting indeed!
I think I got it.
Only took 45 x 60 sec subs at 1600 ISO as I was imaging nearby Omega Centauri most of the evening
Happy to forward the raw files to the relevant people if they are useful.
Bo
Many congratulations Greg, Peter and the BOSS team, finding an sn especially in the Centaurus A galaxy, how cool is that, wow! I'm so excited and thrilled for you guys.
I've posted about this on our fb page this afternoon, so if you're on fb please share with your clubs and observatories, in a quest to get more eyes on it .
Paul, I hope you don't mind that I posted your crop on fb from Feb 6th, along with Greg's discovery image. Well done Paul, you must be chuffed !
And another Atel (that makes 6 of them now) adding to the mystery of what it actually is....Is it actually SN type IIb now?...obviously more spectra to be done yet.
That's the third attempt to classify it, and its still not settled. I've never seen this before...this one is proving to be very interesting indeed!
Could it be something more distant and more luminous?
I took this shot just after midnight Saturday evening at the Astronomical Society of Victoria dark sky site near Heathcote It seems I may have also inadvertently made a prediscovery of a possible Supernova in NGC 5128. 20x15sec CPC11 at f6 Canon 6D ISO6400. Cropped. 7th February 12:15am local time.
I tried to observe the supernova visually this morning in my 16" reflector and despite reasonably good seeing (which allowed me to use magnification up to 480x), I couldn't see it. I could see down to a limit of around magnitude 15.5 as a mag 15.0 field star nearby was easily visible. I saw on TNS that someone had measured a V mag of 15.7 last night, so I probably just missed it. However the biggest challenge was it being very close to a bright mag 12 field star.
so no pic from me. a bit annoying as weather was still good at 4am and now the rest of the week isn't looking so good for later in the evening. but still a murky chance.
.
!
