Steve, Google "IFN and Astronomy" and you should get an article entitled...M81 & M82 within the Integrated Flux Nebula. Bob ________________________________ From: "stevecoe@xxxxxxxxxxxxxxxx" <stevecoe@xxxxxxxxxxxxxxxx> To: az-observing@xxxxxxxxxxxxx Sent: Friday, April 12, 2013 10:05 PM 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 > > > > > > > > > > -- > See message header for info on list archives or unsubscribing, and > please > send personal replies to the author, not the list. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.