The classic Edmund RKE barlow. 2.5x is a mighty useful barlow power. 1.25" format. Clean, threaded for filters. Received it with an Astroscan, but don't need it as I already have a TV 2.5x barlow. Edmund sells these new for $55.
Will sell barlow for $30 (includes shipping). (I will include the tripod bracket for only $10 more---see below.) (Note: this is a long tube barlow so it's not appropriate for scopes with star diagonals--i.e. refractors and SCTs).
Sale pending on barlow, but tripod bracket still available!
Also have the Edmund tripod mounting bracket. Designed to attach the Astroscan to a regular video/camera photo tripod (one that has a 1/4-20 bolt). Edmund sells these new for $50.
Will sell tripod bracket for $25 (includes shipping). (Note: you may not need this if you have a tripod head with a removable plate. If you can replace the standard 1/4-20 bolt with a longer 1/4-20 bolt, you may be able to attach the regular Astroscan table top base to the plate.)
Buy both the barlow and tripod bracket for only $40 (includes shipping).
Lower 48 states only.