Text Fragments

 

This cool feature lets you link to specific sentences on any webpage. Read more here including multiple sentences.

See also: Discussion on promnesia

Comments

Post a Comment

Popular posts from this blog

Python decorator: Example 1

 def add_header_footer(func):     def foo1():                  print("header")         func()         print("footer")     return(foo1) @add_header_footer def foo():     print("plotting code")      >>> foo() header plotting code footer
Read more

Communicating and downloading data from the James Webb Space Telescope

We use the DSN ([Deep Space Network](https://www.jpl.nasa.gov/missions/dsn)) to communicate with the observatory. We receive data when we have a contact with Webb using a DSN antenna The DSN has three sites around the world, each positioned 120 degrees apart. There are antennas in Goldstone, California; Canberra, Australia; and Madrid, Spain. This allows us to communicate with Webb at any time of day Each of the [DSN complexes](https://www.nasa.gov/directorates/heo/scan/services/networks/deep_space_network/complexes) has different types of antennas, including 70-meter (230-foot in diameter), 34-meter (111-foot in diameter), and 26-meter (85-foot in diameter) antennas. The DSN complexes use the 34-meter antennas to talk with Webb with the 70-meter antennas as a backup. The DSN supports different radio frequency allocations, such as the S-band and Ka-band frequencies that Webb uses. -band has a lower bandwidth, and we use that to send commands to the spacecraft (e.g., start recorder play
Read more