Home » News & Blogs » What is the Sensitivity of the VLA?
Bookmark and Share
Ask an Astronomer

What is the Sensitivity of the VLA?

22 Jan 2018, 14:00 UTC
What is the Sensitivity of the VLA?
(200 words excerpt, click title or image to see full post)

Question: What is the sensitivity of the VLA in WATTS? — Ben
Answer: The sensitivity of the VLA is dependent upon what frequency you observe at, how many antennas you use in your measurements, how wide your receiver detection bandwidth is, how far apart the antennas are when you make your measurements, and how long you observe. To give an example, if you observe at 1420 MHz when the VLA is in its D-configuration (most compact) using a receiver detection bandwidth of 600 MHz for one minute, you will have a sensitivity of about 186 micro Janskys. Since one Jansky is equal to 10^(-26) Watts per square meter per Hertz (W m^(-2) Hz^(-1), your sensitivity in W m^(-2) Hz^(-1) would be about 1.86×10^(-24) W m^(-2) Hz^(-1).
Jeff Mangum

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod