Thank you for your interest in our products. Regarding your question about the combination of the ASI 6200 MC Pro and the RASA 11″, we have compiled the following information for your reference:
Camera Flange Back and Back Focus
The ASI 6200 MC Pro has a native flange back of 17.5 mm.
The recommended back focus for the RASA 11″ is 72.8 mm (measured from the telescope’s rear optical plane to the camera sensor).
Therefore, the total thickness of your filters and adapters should be approximately 55.3 mm ± 1 mm to ensure optimal optical performance.
