A SIG IS: 

A list of names. The names are of people who have similar collecting (or other type of) interest as you. Everyone in a SIG is, of course, a member of SHATPS.  SIG members pay no additional dues. They can “opt out” of their SIG at any time if they don’t want to be helped to connect with other similarly-minded society members, or if they are averse to helping to create one article per year. No-one is “forced” to join a SIG; joining a SIG really doesn’t “force” you to do anything. 

A SIG leader can ask, but cannot compel you, to help in writing an article. That is, you can decide to remain in a SIG and never lend a hand in co-authoring anything! But naturally we hope everyone will be “good citizens” and will do their part, however small it might be, to add something to an article once per year from their group.
We hope some active SIGs will want to contribute more than one article per year, if there is something worthy of note to write and contribute. Obviously submissions to SAC will continue to flow in through the usual manner directly to the Editor, whether or not they are “SIG Contributions”. One thing the Editor may elect to do (if he likes our suggestion) is to identify by a small notation, or symbol, perhaps somewhere on the heading, that a give article is a “SIG Contribution”, as distinct from the routine sort of submission all other authors voluntarily send in as they are ordinarily inclined to do.  

• Please fill-out the on-line form below if you want to belong to any SIG(s).
• If you've already done the above, you'll have gotten access to the password-protected page, SIG members only of the Website where the SIGs are listed and this list will include your name and e-mail address (if you've permitted us to reveal it).
• All members of a SIG are connected by a special e-mail address, enabling them to easily contact other group members.

For general feedback on SIGs, please write or e-mail to Klaus Hahn: sigs(at)shatps.org