PTF11kly - Supernova in M101

Dear group,

Here is a glimpse of the supernova in M101 which was caught in its
infant stages less than two days ago: http://www.perseus.gr/Astro-DSO-Supe...y-20110826.htm
..

Anthony.

On Fri, 26 Aug 2011 14:12:54 -0700 (PDT), Anthony Ayiomamitis
wrote:

Here is a glimpse of the supernova in M101 which was caught in its
infant stages less than two days ago: http://www.perseus.gr/Astro-DSO-Supe...y-20110826.htm

Nice. I was thinking of trying for a quick image tonight, if the
weather cooperates (the summer monsoon is still active).

FWIW, this should be referred to as SN 2011fe; the PTF designation was
just used for the first day or so, until an IAU code was assigned.

On 27 Α�γ, 00:32, Chris L Peterson wrote:
On Fri, 26 Aug 2011 14:12:54 -0700 (PDT), Anthony Ayiomamitis

wrote:
Here is a glimpse of the supernova in M101 which was caught in its
infant stages less than two days ago:http://www.perseus.gr/Astro-DSO-Supe...y-20110826.htm

Nice. I was thinking of trying for a quick image tonight, if the
weather cooperates (the summer monsoon is still active).

FWIW, this should be referred to as SN 2011fe; the PTF designation was
just used for the first day or so, until an IAU code was assigned.

Hi Chris,

I saw the change in the designation on the S&T website a few minutes
ago and prepared a copy of the same but now under
http://www.perseus.gr/Astro-DSO-Supe...e-20110826.htm .

Also, using differential photometry, I have a mean estimate for the
magnitude of 13.290 (+/- 0.003) using GSC 3852:1108 (mag 11.7) and GSC
3852:1069 (mag 11.9) as comparison and check stars, respectively.
Please note that the magnitude estimates for these two stars are
accurate to a single digit and which makes my estimate (13.290)
slightly questionable.

Ursa Major is rather low in the sky and I went after M101 about 15
minutes before official darkness (for whatever its worth).

Anthony.

On Aug 26, 2:12*pm, Anthony Ayiomamitis wrote:
Dear group,

Here is a glimpse of the supernova in M101 which was caught in its
infant stages less than two days ago:http://www.perseus.gr/Astro-DSO-Supe...y-20110826.htm
.

Anthony.

Nice capture, Anthony! Thanks for posting it.

On Fri, 26 Aug 2011 15:06:32 -0700 (PDT), Anthony Ayiomamitis
wrote:

Also, using differential photometry, I have a mean estimate for the
magnitude of 13.290 (+/- 0.003) using GSC 3852:1108 (mag 11.7) and GSC
3852:1069 (mag 11.9) as comparison and check stars, respectively.
Please note that the magnitude estimates for these two stars are
accurate to a single digit and which makes my estimate (13.290)
slightly questionable.

Yeah, I wouldn't trust any GSC magnitudes to better than 0.25. That
was never the intent of the catalog, of course, and the photometric
problems are numerous.

In article ,
Chris L Peterson wrote:
On Fri, 26 Aug 2011 15:06:32 -0700 (PDT), Anthony Ayiomamitis
wrote:

Also, using differential photometry, I have a mean estimate for the
magnitude of 13.290 (+/- 0.003) using GSC 3852:1108 (mag 11.7) and GSC
3852:1069 (mag 11.9) as comparison and check stars, respectively.
Please note that the magnitude estimates for these two stars are
accurate to a single digit and which makes my estimate (13.290)
slightly questionable.

Yeah, I wouldn't trust any GSC magnitudes to better than 0.25. That
was never the intent of the catalog, of course, and the photometric
problems are numerous.

I imagine people are interested enough in this supernova that it's
definitely worth keeping the raw images in the expectation that
someone will re-estimate the magnitudes for the comparison stars and
get you another 1.5 decimal places - tedious if they turn out to be
irregular variables, of course.

Tom

On 8/26/11 4:12 PM, Anthony Ayiomamitis wrote:
Dear group,

Here is a glimpse of the supernova in M101 which was caught in its
infant stages less than two days ago: http://www.perseus.gr/Astro-DSO-Supe...y-20110826.htm
.

Anthony.

Very Nice Anthony -- I will share with my new astronomy students on
Monday!
-Sam

On 27 Α�γ, 01:06, Anthony Ayiomamitis wrote:
On 27 Α�γ, 00:32, Chris L Peterson wrote:

On Fri, 26 Aug 2011 14:12:54 -0700 (PDT), Anthony Ayiomamitis

wrote:
Here is a glimpse of the supernova in M101 which was caught in its
infant stages less than two days ago:http://www.perseus.gr/Astro-DSO-Supe...y-20110826.htm

Nice. I was thinking of trying for a quick image tonight, if the
weather cooperates (the summer monsoon is still active).

FWIW, this should be referred to as SN 2011fe; the PTF designation was
just used for the first day or so, until an IAU code was assigned.

Hi Chris,

I saw the change in the designation on the S&T website a few minutes
ago and prepared a copy of the same but now underhttp://www.perseus.gr/Astro-DSO-Supernovae-SN2011fe-20110826.htm.

Also, using differential photometry, I have a mean estimate for the
magnitude of 13.290 (+/- 0.003) using GSC 3852:1108 (mag 11.7) and GSC
3852:1069 (mag 11.9) as comparison and check stars, respectively.
Please note that the magnitude estimates for these two stars are
accurate to a single digit and which makes my estimate (13.290)
slightly questionable.

Ursa Major is rather low in the sky and I went after M101 about 15
minutes before official darkness (for whatever its worth).

Anthony.

According to AAVSO Alert Notice 446, we have:

Aug 26.1965 - mag 13.4
Aug 26.8747 - mag 13.118

Aug 26.8160 - mag 13.290 (my estimate from above) and perfectly in
line with the reported magnitudes from the AAVSO bulletin.

Anthony.

On Aug 27, 12:22*am, Sam Wormley wrote:
On 8/26/11 4:12 PM, Anthony Ayiomamitis wrote:

Dear group,

Here is a glimpse of the supernova in M101 which was caught in its
infant stages less than two days ago:http://www.perseus.gr/Astro-DSO-Supe...y-20110826.htm
.

Anthony.

* *Very Nice Anthony -- I will share with my new astronomy students on
* *Monday!
* -Sam

This blows me away,you can't express a simple fact that the Earth
turns once in a day and so whatever chance these students have of
appreciating the once noble discipline of astronomy,they will have
none after passing through the empirical cult.

Is it so difficult to correlate one rotation with one day or expanded
to 1461 rotations in 1461 days just because of some warped reasoning
that requires an insane 1465 rotations in the same period ?.

On Aug 26, 11:24*pm, oriel36 wrote:
whatever chance these students have of
appreciating the once noble discipline of astronomy,they will have
none after passing through the empirical cult.

You have expressed a truth you did not intend here.

Once people have their eyes opened to the scientific view of nature,
the kind of passive, subjective and speculative astronomy you seem to
advocate will indeed be alien to them.

John Savard