ZWO M54-M48 21mm Extension Celestron * Note: For best results

* Note: For best results

It also acts as a lens shade to block stray light

Level II from Software Bisque

but its larger sensor delivers four times the total number of pixels

Q: The SQA55 itself can be adapted to electronic focusers

ZWO M54-M48 21mm Extension Celestron * Note: For best resultsDesigned using black anodized aluminum, this ZWO spacer offers 21 mm of extension with a 2" M54 male threaded nosepiece on one side and 2" M48 female thread on the opposite side. Suitable for use with any large camera that has M54 threads, whether from ZWO or another brand. Permits 2" astronomy filters to be used at the underside of the nosepiece. Adapter Connector Type Side A M54 Adapter Connector Type Side B M48 (Wide T or T2) Adapter or Spacer