Storing a Newtonian optical tube assembly (OTA) requires careful attention to prevent dust accumulation, physical damage, and any potential misalignments. Here are some detailed steps you can follow to ensure proper storage:
Location Selection: Choose a dry, clean area away from extreme temperatures and humidity. An environmentally stable room, such as a closet within a temperature-controlled room, is ideal to avoid moisture-based damage and corrosion.
Cover and Seal: Use a dust cover or a specially designed storage bag to protect the OTA from dust and dirt. Ensure the ends of the tube are sealed with dust caps or plugs to prevent contaminants from entering the tube.
Stable Mounting: If possible, store the OTA on a secure, stable mount or cradle to prevent the optical components from becoming misaligned. Ensure that it is not resting directly on a hard surface to avoid stress on the tube.
Vertical or Horizontal Orientation: Opinions vary on the best orientation for storage. Some suggest storing vertically to avoid distortion of optical elements, while others propose horizontal storage to evenly distribute mechanical stress. Choose according to available space and equipment design, ensuring stability in either case.
Lens and Mirror Protection: To further safeguard the optics, ensure the mirrors and any exposed glass elements are covered and free of fingerprints or other contaminants before storage.
Regular Maintenance: Periodically check the OTA to ensure it remains in good condition. This entails examining for signs of dust, mold, or mildew and ensuring that any protective covers are still effective and fittings are secure.
Transport Consideration: If you plan to transport the OTA in the future, ensure that storage procedures accommodate easy transfer to a protective carrying case, which provides cushioning and additional protection during movement.
By adhering to these steps, a Newtonian OTA can remain in excellent condition, ensuring optimal performance when in use.