QHY Adapter Kit - Combo E1 Adapter Kit E1 can be directly connected to the 55mm BFL M48 interface MPCC, or Nikon / Canon DSLR lens (need to purchase another DSLR lens adapter). E1 is designed for QHY533C, 294C, 163C, 183C, 174C. Of course, if you use 163M/294M/183M/174M while a filter wheel or OAG is not needed, you can use E1 as well. Allow direct connection via M48 threads and provides 55mm of backfocal distance, e.g. for MPCC Or with achievable back focus length of 44.1 mm with adaptable Canon EF lens, or with achievable back focus length of 46.5 mm with adaptable Nikon F lens, (lens adapters sold separately).). The mono version has an internal thread with which a special version of our CFW3 filter wheel can be adapted. This filter wheel will be available together with the QHY 533 series from the end of April. Due to the short backfocus design of both components, a Canon or Nikon telephoto lens can also be connected here at 55 mm backfocus. Technical Specifactions Model Product No. Compatible with To Connect Kit Includes Combo E1 20110 QHY294C / QHY163CQHY183C/ QHY533C 55mm M48 Threads Three Customized adapters and a 0.5mm spacer Manual & Warranty QHYCCD 2-Years Warranty