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Observing >> Deep Sky Observing

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Edward E
scholastic sledgehammer
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Reged: 03/26/06

Loc: Tucson, Arizona
Supernova in NGC 2554 - Cancer new
      #5779978 - 04/05/13 03:57 PM Attachment (42 downloads)

Well if the SN in M 65 is getting you down and your a SN addict like me, then here is another for you to try and it is brighter than the one in M 65. The galaxy is in Canter, NW of M 44. The SN has a V mag of 14.7 and is just SW of the galaxies bright central region. The galaxy is framed by 3, 14 mag stars that will help with IDing the galaxy and the SN. Attached is a finder chart for the SN. The galaxy is plotted on chart 30 of the excellent & free "Deep Sky Hunting Atlas" provided by Michael over in the Stellar Media Forum. Happy hunting!

Edited by Edward E (04/05/13 06:30 PM)


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Rich (RLTYS)
Post Laureate
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Reged: 12/18/04

Loc: New York (Long Island)
Re: Supernova in NGC 2554 - Cancer new [Re: Edward E]
      #5781237 - 04/06/13 07:48 AM

Thanks for the info. Will have to try to image SN J08175.

Rich (RLTYS)


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer new [Re: Rich (RLTYS)]
      #5783144 - 04/07/13 05:45 AM

Thanks for that eg SN in NGC2554 @ m14.7 - will try on first clear night like last night but family birthday celebrations came first

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Rich (RLTYS)
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Reged: 12/18/04

Loc: New York (Long Island)
Re: Supernova in NGC 2554 - Cancer new [Re: Edward E]
      #5784558 - 04/07/13 07:08 PM Attachment (29 downloads)

Just took this image of the SN in NGC 2554 with the SLOOH remote observatory.

Rich (RLTYS)


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Edward E
scholastic sledgehammer
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Reged: 03/26/06

Loc: Tucson, Arizona
Re: Supernova in NGC 2554 - Cancer new [Re: Rich (RLTYS)]
      #5785817 - 04/08/13 12:03 PM

Nice image and it shows nicely an issue with observing this SN visually, that is, how close the SN is to the bright nucleus. I had a go with this SN Saturday night. There was some light cirriform clouds scattered about and the seeing was average at best. With my 20" f4.5 using a 14mm & 8.8 Meade 4000 UWA (163X & 260X) eyepieces, I could, with adverted vision just make out two bright spots, one was the galaxy's nucleus and the other was the SN. It was difficult with the seeing to separate the glow of the nucleus from the SN. Only during moments of calm air would the two separate into distinct components. Still it was worth the search and waiting for calm air.

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nytecam
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Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer new [Re: Rich (RLTYS)]
      #5786125 - 04/08/13 02:15 PM

Excellent work - still awaiting a clear night

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nytecam
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Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer new [Re: nytecam]
      #5786423 - 04/08/13 05:06 PM Attachment (18 downloads)

Got lucky at dusk tonight in increasing haze as below

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george golitzin
Carpal Tunnel
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Reged: 02/24/06

Re: Supernova in NGC 2554 - Cancer new [Re: nytecam]
      #5787214 - 04/09/13 01:00 AM

Thanks Edward for posting this, and thanks Nytecam for the great picture. It took me a while to appreciate the scale of that picture, just how close the SN is the galaxy core; seeing was pretty soft with a cool breeze blowing, but I was able to get a clear split in averted vision in my 18-inch with the 5mm XW (no paracorr, for 380X); although stars were a bit bloated, I went to the 3.5mm (545X) and waited patiently until I got again a very clear view with better separation than at the lower power. A tough one, to be sure. It seemed to me the SN was quite a bit fainter than the mag 13 star which megastar shows 1.2 arcmin to the SSE of the core. Observation was at home under a mag 5 sky.

Thanks again both of you for your help on this one!

-George


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Rich (RLTYS)
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Reged: 12/18/04

Loc: New York (Long Island)
Re: Supernova in NGC 2554 - Cancer new [Re: george golitzin]
      #5788927 - 04/09/13 06:54 PM

This SN appears to be about mag 14.8.

Rich (RLTYS)


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nytecam
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Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer new [Re: Rich (RLTYS)]
      #5789573 - 04/10/13 03:28 AM

Quote:

This SN appears to be about mag 14.8. Rich (RLTYS)


The only mags I can find are on Bright Supernova page which need careful checking as some are undefined as to filter, if used. The "m14.8" appears to be a red magnitude and visual will be typically 1 mag fainter

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Rich (RLTYS)
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Reged: 12/18/04

Loc: New York (Long Island)
Re: Supernova in NGC 2554 - Cancer new [Re: nytecam]
      #5790674 - 04/10/13 04:37 PM

Not sure I agree. Can you tell me where on the Bright Supernova homepage you found mag estimates for this SN? I've not been able to locate them.

Rich (RLTYS)


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nytecam
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Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer new [Re: Rich (RLTYS)]
      #5790748 - 04/10/13 05:11 PM

Quote:

Not sure I agree. Can you tell me where on the Bright Supernova homepage you found mag estimates for this SN? I've not been able to locate them.
Rich (RLTYS)


Rich - I checked the images posted, some with mag estimates

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blb
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Reged: 11/25/05

Loc: Piedmont NC
Re: Supernova in NGC 2554 - Cancer new [Re: nytecam]
      #5791007 - 04/10/13 06:28 PM

Quote:

Can you tell me where on the Bright Supernova homepage you found mag estimates for this SN? I've not been able to locate them.



Sure, just click on the Supernova in the list that you are interested in and when the information about the nova comes up (about three or four lines) click on the hyperlink for magnitude and that will bring up a list of those mag. that have been reported.


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nytecam
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Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer new [Re: blb]
      #5792987 - 04/11/13 06:10 PM Attachment (11 downloads)

This SN continues to be relatively bright [compared to 2013am in M65 which seems to be fading] - was clear tonight - here's a sampler that clearly shows this SN immediately south of the gxy core in just 5s exposure which perhaps mimics the eyepiece view

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Bill Weir
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Reged: 06/01/04

Loc: Metchosin (Victoria), Canada
Re: Supernova in NGC 2554 - Cancer new [Re: nytecam]
      #5793414 - 04/11/13 10:22 PM

It's on my list for this evening along with a third try (first two were successful) at 2013am. Think it will be cool to have seen 2 different super nova in one observing session.

Bill


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer [Re: Bill Weir]
      #5793828 - 04/12/13 06:00 AM Attachment (11 downloads)

Here's a better/ deeper pic of this SN from last night - data on image. What a difference NELM 3.8 last night against NELM-1.5 through thin cloud on Apr 8 for my 1st shot of this SN

I think this is the SN to look for rather than 2013am in M65 which I think is much fainter and now fading


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RolandosCY
super member


Reged: 01/02/09

Loc: Nicosia, Cyprus
Re: Supernova in NGC 2554 - Cancer new [Re: george golitzin]
      #5798053 - 04/14/13 10:20 AM Attachment (10 downloads)

Quote:

...just how close the SN is the galaxy core; seeing was pretty soft with a cool breeze blowing, but I was able to get a clear split in averted vision in my 18-inch with the 5mm XW (no paracorr, for 380X...-George



Indeed, it is readily observable with 18 inches and I would dare say under optimum conditions it might be doable with less than 15 inches. Last Friday evening we have had quite steady seeing, and the nucleus and supernova were quite distinct. I was surprised by the brightness of the galaxy, I got carried away from the CCD images on this thread and I expected a much fainter galaxy.

I include the central part of my sketch which shows the SN to the right (south) of the galaxy core (I include only part of the sketch as the low resolution allowed at CN makes the SN inseparable). The sketch was made with my 18" and a 7mm TV Nagler at 294X.


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Supernova in NGC 2554 - Cancer new [Re: RolandosCY]
      #5798578 - 04/14/13 03:14 PM

Impressive work - well done

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george golitzin
Carpal Tunnel
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Reged: 02/24/06

Re: Supernova in NGC 2554 - Cancer new [Re: nytecam]
      #5799815 - 04/15/13 02:11 AM

Indeed, a very nice sketch!

-geo


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RolandosCY
super member


Reged: 01/02/09

Loc: Nicosia, Cyprus
Re: Supernova in NGC 2554 - Cancer new [Re: george golitzin]
      #5800535 - 04/15/13 01:27 PM

Thanks guys!!!

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