F9110A extension tube with M42 female thread can be used to connect SV28 spotting scope with astronomy camera, such as SV105,you just need another M42 adapter W2787A, we sold seperately.
1. Svbony F9110A has M42 female thread, it can be connected with SV28 spotting scope, at other end, it has M42 male thread, which can be connected with camera adapter with M42 female thread, such as W1077A and W2054A, we sold seperately
2. This adapter can be used to connect SV28 and astronomy camera to view more details about moon or other planets