- Differences between M87 and M42 filter drawers – Learn the differences between filter drawers designed for ZWO cameras equipped with APS-C and full-frame sensors.
- Backfocus and tilt – general discussion – The article discusses technical problems encountered when working with large sensors and Celestron RASA 8 telescopes.
- Filter drawers and adapters – results and experiments – Presentation of example results obtained during the test of filter drawers and adapters.
- Front Tilting Mechanism – Discussion of Front Tilting Mechanism, a unique system used in some Astrodevice adapters.
- Dual filter imaging – Demonstration of a technique that allows separation of emission bands of interest using two filters simultaneously.