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SN 2011dh in M51

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SN 2011dh in M51 was created by JohnONeill

Hi,

A nice Supernova in the Whirlpool Galaxy, M51. I imaged it with my DSLR Camera.
See Variable Star Nights

The SN is about 2.7' SE of the nucleus of M51. I found it too faint to see with the 106mm refractor. It was mag 13.5 at discovery.

John
11 years 5 months ago #89649

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Replied by dave_lillis on topic Re: SN 2011dh in M51

Now thats interesting, I hope it lasts a good while yet. At 13.5 its well within the limits of the 20" so hopefully I get a chance to visually catch this extragalactic supernova B)
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
11 years 5 months ago #89651

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Replied by Seanie_Morris on topic Re: SN 2011dh in M51

Palomar Observatory eve began a Facebook campaign seeking amateur astronomers to take part, especially if they imaged M51 in the past week. The progenator star has not yet bee identified.

palomarskies.blogspot.com/2011/06/amateu...-help-ptf-study.html

M51 really has had a few supernovae in the past decade or two, whereas the Milky Way?... Nada.

Seanie.
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
11 years 5 months ago #89659

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Replied by johnomahony on topic Re: SN 2011dh in M51

Its possible that we can only see SN's that are relatively close in our own galaxy due to the line of sight problem looking through the densely packed plain of the Milky Way. Looking face on would not be an issue as in M51.
The Lord giveth, the Revenue taketh away. (John 1:16)

www.flickr.com/photos/7703127@N07/
11 years 5 months ago #89665

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Replied by dave_lillis on topic Re: SN 2011dh in M51

well just confirmed the supernova, seen it visually through the 20", not hard to see at all, I guess it would be brighter again under a dark sky and no light pollution and dark adaption, a shade dimmer then the star next to it, the one not on the spiral arm.
Very cool to see one visually when you can only imagine what it must look like from a planetary system in that galaxy!
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
Last edit: 11 years 5 months ago by dave_lillis.
11 years 5 months ago #89667

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  • michaeloconnell
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Replied by michaeloconnell on topic Re: SN 2011dh in M51

From Sky and Telescope:

M51 Supernova brightening. Supernova 2011dh, which was discovered in the Whirlpool Galaxy, M51, on May 31st, has been brightening ever since — though the brightening is now leveling off. As of June 16th the supernova was about V magnitude 12.6 and visible in a lot more amateur telescopes.
11 years 5 months ago #89836

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Replied by dave_lillis on topic Re: SN 2011dh in M51

thats great news, lets hope we get a view of it again soon.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
11 years 5 months ago #89839

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Replied by DaveGrennan on topic Re: SN 2011dh in M51

Forgot to post this, here's an image and spectrum taken of Sne 2011dh from June 3rd;

www.webtreatz.com/index.php?option=com_content&id=81
Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here
11 years 5 months ago #89840

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Replied by cathalferris on topic Re: SN 2011dh in M51

I've seen this visually with my 8" newt and meade 8.8UWA on Sat 12th. It was not easy, but I did compare what I could see to pre-discovery photos and the star that I was looking at was definitely not one of those already present on the pre-discovery images.
I couldn't see the spiral arms for definite, but I could see the cores of M51 and NGC5195 and I could use those to reference directions and distance to the field stars.
--
It's my madness that keeps me sane
11 years 5 months ago #89854

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