Fermi Observing Timeline Utility Search

This utility allows you to search Fermi's observing timelines, both as planned and as-flown, and enables you to specify the information you wish displayed. Please make your choices, and then click on the submit button at the bottom. Depending on the scope of your search, it may take several seconds to obtain your results.

Data Selection

There are two ways you can view Fermi observing timelines, by specifying a date range or by searching for an ObsID, Proposal ID, or Principal Investigator. To only search by date, put in the date (or date range) and leave the ObsID, Proposal ID, Principal Investigator search box blank. Do the opposite if you'd like to only search by ObsID, Proposal ID, or Principal Investigator. Alternatively, you can limit an ObsID, Proposal ID, or Principal Investigator search by also indicating a date (or date range).

Note: Timelines are only available starting with Mission Week 6, which began July 10, 2008.

Search by Date Range:

Date Range: or view 6-week Quick-Look

Acceptable formats:

Mission Week Number (use .. to indicate a range)
Examples: 6 or 6..8
Date in ISO-8601 (yyyy-mm-dd) format (use .. to indicate a range)
Examples: 2008-06-15 or 2008-06-15..2008-08-15

Search by ObsID, Proposal ID, or Principal Investigator:

Timeline Key

Fermi observations are planned a week at a time. A series of timelines are created before a given mission week, and a final "as-flown" timeline is produced after the observations. This utility displays data from the most recent timeline:

Long Term Timeline -- data are indicated in blue. Only an observation's assignment to a given week should be considered; this assignment may change.
Preliminary Science Timeline -- a short term timeline covering one week created three weeks in advance. Observations are likely to occur as scheduled.
Final Science Timeline -- a short term timeline covering one week created one week in advance. Scheduled observations will almost occur unless interrupted by Target-of-Opportunity observations and gamma-ray burst Autonomous Repoints.
As-Flown Timeline -- data are indicated in bold. These observations that have already occurred.

Viewing Options

A snapshot -- an uninterrupted observation—is the basic observation unit. You can view all the snapshots in the selected data, or the sum of the snapshots for each mission week. For each of these choices you can select which quantities you wish displayed. Finally, you can choose whether the results are initially sorted by ObsID or by time.

Initial Sorting ...

By Time
By ObsID (Proposal ID, PI)

Grouping ...

Group snapshots by week

Show individual snapshots