Explore the observations made by Chandra
Here are some ways to explore the observations
performed by Chandra. Many are just different ways to view
the schedule - by restricting to a subset of the observations -
but there are also different views of the data (e.g. the
calendar view) or how the data are linked (such as how
the proposal categories are related to the SIMBAD data types):
-
explore the
Chandra observing timeline,
which - unlike many of the following views - allows you
to filter the data, using
faceted
browsing
,
- a calendar view, where each day of the life of Chandra (post launch into Space!) is color-coded by the number of observations started on that day,
- the exposure-time breakdown, which shows the observing-time distribution as a function of observing cycle,
- how observations are distributed on the sky as a function of their observation length (the full distribution from the previous page is used to calculate bands of exposure times that cover ten-percent blocks of the full distribution),
- a slightly-different view of the breakdown by cycle (this time by number of proposals rather than number of observations),
- by instrument,
- a look at how the time is spent on each instrument,
- an incomplete view of how ACIS sub-arrays are used,
- by viewing the full SIMBAD object hierarchy or treating them individually,
- by constellation,
- by proposal category or type,
- by what sort of turnaround time or constraints was needed for the observation (if any),
- the observations done jointly with other telescopes,
- and looking at how the proposal categories and SIMBAD object types are related.
The text search will match your input against the schedule, and provide suggestions, but this only happens after three or more characters are entered. The searches are case insensitive and exact, so you can not search for all observations of targets containing the string NGC. Note that there is an issue with spaces in the text searches; ideally the names would be normalized (or the search would be), but at present they are not, so the results of searching for NGC 404, NGC 404, or NGC404 will be different.