Hi Alan,

Try Baader "Wonder Cleaning Fluid". I'm sure that you should be able to get this Stateside.

For those in the UK, I got mine from Rother Valley Optics.

http://www.rothervalleyoptics.co.uk/baader-optical-wonder-cleaning-fluid_d3297.html

It comes in a press-spray plastic bottle - 100ml for Ł9.00 (it was Ł6.95) but it will practically last forever and a day when you consider how little one uses it and how much one uses at any given time.

Apply it using cotton pads and follow the procedure laid down by Arkansas Sky Observatory. Use the pads liberally for wiping and drying but don't spray the fluid directly onto the plate.

www.arksky.org/asoclean.htm

The instructions are very comprehensive.

The corrector should only be cleaned WHEN ABSOLUTELY NECESSARY. There is a risk (minimal but a risk) that you will damage the lens coatings (but different sites have different opinions on this one). You make your own judgement but YOU HAVE BEEN WARNED!

Hope this helps some.

Art