The Exposure Time field allows querying for observations based on values or ranges of exposure duration, in seconds. Type a number, conditional operation, or a range.

To constrain data by Date and/or Time, use the format: yyyy-mm-dd in the Obs Start Date field and hh:mm:ss in the Time field. Note the Time field is not required.

Shortcuts are available in these fields. Entering just a year in the Obs Start Date field will default to January 1st of the year, e.g., entering just '2001' is the same as entering '2001-01-01'. Entering just a year and month will default to the 1st of that month, e.g., entering just '2001-04' is the same as entering '2001-04-01'. Entering partial times will fill in the rest with zeroes, e.g., entering '15' in the 'Time' field is the same as entering '15:00:00', and entering '11:30' is the same as entering '11:30:00'.

In addition to directly typing in an exact date/time, this component offers a built-in calendar and clock to set the parameters.

Type an exact surname or a character string to enable a type-ahead menu. Once the type-ahead menu pops out, scroll through the surname list and select a name. 'Wildcard' search, 'Exclude' search, and search by 'Multiple' entries are allowed, but will not work with the type-ahead drop-down list.

The Proposal ID component allows search by proposal ID number(s) assigned to observation(s). Note that for some data collections, this might refer to Proposal ID or Guest Investigator ID.

This field allows an exact match, conditional search (for example, >= 14657) or a range search (for example, 12500 .. 12600). Type the Proposal ID with a preferred numeric search operation.

An Observation is considered "released" when it becomes available to people outside the Principal Investigator Team; depending on the exclusive access period, this could be instant or take up to a year.

See the Observed Date component for tips on how to use this component.

Example of a type-ahead search result for Filters/Gratings that start with 'G13':

Example of 3 filter/grating entries: an exact match of POL120, a wildcard search on G*, and an exclusion of G130M:

The Spectral Element refers to filters, gratings, both, or combination filter sets such as 'POL120UV;F330W' depending on the data collection.

One or more filters or gratings can be entered into the Filters/ Gratings box. Press 'tab', 'return', or 'comma' on your keyboard to finish entering the filter/grating name (clicking off the text box will also work).

• Upon entering a filter/grating, it will be added and surrounded by a light-blue color.  The filter/grating shown will be included as a search filter.

• The 'X' mark right next to each entry can used to remove a filter/grating.

This field supports type-ahead. Once a key is pressed, a list of filters/gratings that contain that text will be shown. Browse through the suggested list to find the one being searched for, and then click to select it.

Since there are many options for searching based on the filter/grating list, we expand the description with more examples below. There are various ways to constrain the search. Below are some examples of how to use these constraints. Experiment with other options for further constraining the search.