I have the adapter for sale that I used on my 102 to hold the Solarmax 60 HA filter. I sold the 60 and got a 90mm. I paid $155 new with a 1 month wait. It's two months old. Good as new ~~ $125 and I'll handle shipping. BTW~The 60 worked great on my 102. I got aperture fever.I"m sure you understand.