To make a great product even better, a few comments to help improve the current implementation of observations:
1. There should be a way to access the object info, and to center an object in the screen, from an observation of the object
2. There should be a way to display all objects in a given observing session on the map of the sky (like you can for observing lists)
3. There should be a way to log use of filters in observations (currently this category is missing)
4. Seeing, limiting magnitude, and sky quality should be properties of a session, and cascaded to the observations (with optional ability to override).
5. In the menu structure, having sessions and observations next to each other feels confusing. It would feel more natural to first click on a session, and there to see the properties of the session as well as the list of observations in the session
Thank you for your consideration.