[AZ-Observing] Re: IC2574 (Coddington's Nebula)
- From: L Knauth <Knauth@xxxxxxx>
- To: "az-observing@xxxxxxxxxxxxx" <az-observing@xxxxxxxxxxxxx>
- Date: Sat, 13 Apr 2013 13:38:40 +0000
IFN refers to "Integrated Flux Nebulae". It is ambient gas and dust in our
Milky Way galaxy that is not illuminated by single stars but rather by all the
stars in the galaxy as a whole. IFN started showing up in the incredibly deep
images being taken by amateurs--strands and patches of wispy reflection and
even low level emission gas and dust found all over--- even at high galactic
latitudes. It shows up big time in the infrared. The web site of the chap
trying to catalog and chase the visible side of it all is:
http://www.galaxyimages.com/UNP_IFNebula.html
These are not going to be spectacular in the eyepiece of any 'scope. The deep
photos stand to be gorgeous. Take a look at:
http://www.astroworks.com/gallery/ST2000GAL/ic4633.html
Paul Knauth
________________________________________
From: az-observing-bounce@xxxxxxxxxxxxx [az-observing-bounce@xxxxxxxxxxxxx] on
behalf of stevecoe@xxxxxxxxxxxxxxxx [stevecoe@xxxxxxxxxxxxxxxx]
Sent: Friday, April 12, 2013 10:05 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: IC2574 (Coddington's Nebula)
Bernie;
Great shot, lots of detail in a low surface brightness object. I can't
image seeing any of that detail and mottling with any telescope I have
ever owned.
What does IFN mean?
Steve Coe
On 12.04.2013 18:23, Bernard Miller wrote:
> Hi,
>
>
> The link below is to IC2574. When it was first discovered in 1898,
> they
> thought it was a nebula, which is how it got its name, but this is
> actually
> a dwarf irregular galaxy in Ursa Major. It is a faint little fuzzy so
> I got
> about 18 hours of data. If you look at the full size uncropped
> version (link
> below the image), I am pretty sure you can see the IFN. At first I
> thought I
> had gradients, but there is definitely a cloud of some sort
> surrounding the
> galaxy (especially in the lower right of the full size image) and
> there is
> no nebula in the neighborhood. I posted the cropped version, but I
> may post
> both versions as each one has its advantages.
>
>
>
>
> http://www.azstarman.net/IC2574.htm
>
>
>
> Bernard
>
>
>
>
>
>
>
>
>
> --
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> please
> send personal replies to the author, not the list.
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