Clusters of Galaxies... (click on images to enlarge)

Abell 262 (And)
N 457/1850 mm
222 ×
fst* 6.6 (B)

Abell 426 (Per)
N 457/1850 mm
222 × 
fst* 6.6 (B)

Abell 1656 (Com)
N 457/1850 mm
205 × - 222 ×
fst* 6.5 (B)

To be continued...