JMI Focuser Curved Backup Plate adds support when mounting JMI EV, NGF (1.25″ and 2″) or RCF focusers onto Sonotube (cardboard) or wooden telescope optical tubes. The 0.075″ thick aluminum plate can be easily curved or flattened as needed.

JMI Focuser Curved Backup Plate

JMI Focuser Curved Backup Plate adds support when mounting JMI EV, NGF (1.25″ and 2″) or RCF focusers onto Sonotube (cardboard) or wooden telescope optical tubes. The 0.075″ thick aluminum plate can be easily curved or flattened as needed.

Will not work with the EV-75 Upgrade.