This page contains links to other web sites which you may find interesting or useful. The first is the CalTech Arp site which includes Dr. Arp's original article, all of the images (which are linked to the individual image pages on this site), and figures explaining his classification scheme.
For anyone interested in doing their own CCD or visual observations, you will find all the data you need to get started on Dennis Webb's Arp's Peculiar Galaxies site. It contains tables of the brightest Arps, the entire list in Right Ascension order, and a list by constellation, as well as other useful observing information.
And below is Dennis' Home page, which gives a broader view of the range of his astronomical interests.
The Astronomical League has an observing program for the Arp galaxies. Observations of any 100 from the list, either visual or CCD, qualify you for a pin and certificate. The League site also has a lot of useful information for observers.
I'm a member of the Johnson Space Center Astronomical Society and the club site is shown below. You will find links to many other sites, including members' web sites. Al Kelly and Randy Brewer are outstanding deep sky imagers, and Ed Grafton is one of the best (if not the best) planetary imager in the country.
Al Kelly's site is available through the JSCAS site, as is mine, but I'm including a direct link to Al's site because of the wealth of information contained. Al's images are great and, in addition, he is one of the real gurus of image processing. You will find much useful information to help with your processing, whether you are a beginner or an expert.
This is not intended as a commercial but the Willman-Bell site is listed below. They are the source for AIP4Win (my image processing program), Megastar (my choice for chart generation), and for Kanipe and Webb, The Arp Atlas of Peculiar Galaxies, A Chronicle and Observer's Guide, which is an essential reference for anyone with an interest in Dr. Arp or the Arp galaxies.
The following site by Bob Hill of the Amarillo Astronomy Club is an excellent guide for visual observations of the Arp galaxies.
The most extensive source of data on galaxies is the NASA/IPAC Intergalactic Database, better known as NED. You can type in the name of an object, the name of a nearby object, or a position and you'll get back links to images, magnitudes, diameters, and redshifts at various wavelengths, alternate catalog designations, lists of articles, etc.
I could go on listing a lot more links. These are the best I've found but I'm sure if you spend some time googling or following the large number of links on the sites above, you will find some you like even better. When you do, or if you find any errors or broken links on my site, please let me know. I'll also try to answer questions but how well I do it will depend on how many I get. You have a better chance getting an answer to a technical question. While I enjoy discussing philosophical or cosmological questions one on one, I generally won't respond to those by e-mail. It just takes too long! My e-mail is firstname.lastname@example.org. I hope you enjoyed the site.