Have a 72mm LPS filter from IDAS for sale. This filter is the answer for those who have to do astrophotography (or CDD) in light polluted sky. It is in excellent condition, used only twice. Originally bought for FSQ106 to do 6X7 astrophotography, but no longer have the scope. Can be use with AP 2.7 focuser with special holder from Hutech.
New cost $309, looking to sell for $265 + shipping.