An optical catalog of galaxy clusters obtained from an adaptive matched filter finder applied to SDSS DR9 data

•A new optical catalog (AMF DR9) of galaxy clusters compiled from SDSS DR9.•It is constructed using an Adaptive Matched Filter (AMF) technique.•The catalog is cross-correlated with other catalogs in optical and X-ray wavebands.•The AMF DR9 compares favorably with respect to other optical catalogs considered.•An extended catalog with lower richness clusters is also provided. We present a new galaxy cluster catalog constructed from the Sloan Digital Sky Survey Data Release 9 (SDSS DR9) using an Adaptive Matched Filter (AMF) technique. Our catalog has 46,479 galaxy clusters with richness Λ200 > 20 in the redshift range 0.045 ≤ z