"Hubble's Variable nebula" - NGC 2261 - in Monoceros

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On Oct 8, 7:46 am, ukastronomy
wrote:
I have just updated this page

http://www.martin-nicholson.info/hubble.htm


Martin,

Great! Now you should string those three images of Hubble's Variable
Nebula together into an animated GIF, like this guy did in 1999.

http://web.archive.org/web/200412101...2261_1999.html

I wish somebody would monitor it at a one-week interval for an entire
season. Don't look at me.

Tom

ukastronomy wrote:

I have just updated this page

http://www.martin-nicholson.info/hubble.htm


the animations showed 10 or more variable stars. neat. I thought at
first it was a consequence of the process and variable images. but on
closer inspection that was not true.

josephus
--
I go sailing in the Summer and
look at STARS in the Winter.
"Everybody is igernant, jist on differt subjects"
Will Rogers Jr.
"it aint what you know that gets you in trouble
it is what you know that aint so"
Josh Billings.

On Mon, 08 Oct 2007 15:58:59 -0500, josephus
wrote:

the animations showed 10 or more variable stars. neat. I thought at
first it was a consequence of the process and variable images. but on
closer inspection that was not true.

You can't use the first animation to determine if there are any
variables, since it is made up of frames collected through different
filters. The second animation has one obvious variable, but the other
changes appear correlated. I very much doubt that any of the other stars
in the image are sufficiently variable to be visually apparent.
Certainly, to determine if there are any variable, it would be necessary
to perform a proper photometric analysis on the original data- it isn't
possible to use the animated GIF for this purpose.

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

that's cool Martin. Very cool!


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I have just updated this page

http://www.martin-nicholson.info/hubble.htm