For NexStar 4 and for all C90 spotting scopes
With these Celestron T adapters you can
SLR cameras (35mm) in the primary focus of the NexStar 4 or the C90
– Spotting scopes can be connected. This way you can
terrestrial but also lunar and planetary photographs
do. For deep sky photography you need an additional one
guide scope.
In addition to the T-adapters, a T-ring is required for the respective camera
needed.