Sounds like you have a lot of learning to do Doug, but is that not where all the fun is. When looking for filters have a look at these
http://www.sciencecenter.net/hutech/...lter/index.htm
Hutech have only compared them to their own but the super anti reflection coatings would really minimise any reflections wth bright stars in a field of dim nebulosity.
Looking foward to more images.
Bert