ESATTO 2" ADAPTER FOR SCT WITH 3.3" THREAD 31 Some mounts allow a backlash

Some mounts allow a backlash compensation

allowing you to easily reach prime focus

while the widest possible imaging field greatly facilitates the realization of variable stars

Inner diameter / clear aperture

The Prima Luce Lab dew heater for 150mm tubes can be tightly locked around your optical tube by using the velcro patch

ESATTO 2" ADAPTER FOR SCT WITH 3.3" THREAD 31 Some mounts allow a backlashThis adapter allows you to directly thread the ESATTO 2" onto the back of Schmidt Cassegrain telescopes such as the Celestron 11" & 14" SCT and EdgeHD 925, 1100 & 1400 which have 3. 3" SC threads. The ESATTO is the perfect solution for achieving precise focus and avoiding mirror flop and focus shift by leaving the mirror locked. Since the ESATTO has a depth of 67mm and the 3. 3 adapter has only 2mm of optical thickness, this leaves 77mm of backfocus