Common imaging train

Askar SQA85 (M54) + ASI6200MC Pro + M54 filter drawer

Fitted with Askar's M54 adapter the SQA85 presents a wider thread, which is what M54-native cameras and wheels want. ZWO made the M54 drawer for its full-frame bodies: it threads onto the M54 tilt plate and keeps a wide bore all the way to the 2" filter cell, which becomes the narrowest point. The gap it leaves is not a single stock extender. With M54 on both ends nothing steps down below the 2" filter cell, which the tool checks against the 43 mm diagonal.