1)List of objects in a constellation. For example when we select a constellation and click on enter we would get the list of stars, galaxies and nebulae that belong to a constellation. There are also links to stars galaxies and nebulae from here which might aid the user to view an object from here.
2)Here the list of objects are arranged according to a user chosen order. This figure represents a list of nebulae. User can arrange by choosing on of the many fields available. For example he can arrange nebulae by distance from earth, size,etc. It can be arranged both in ascending or descending order.