Radio Observations &
Galactic Rotation
The WVU Small Radio Telescope Project

The Small Radio Telescope

Telescope Operations &
Specifications

Analog vs. Digital Receivers

Noise Calibrator Circuit

Electronic Noise Calibrator

Antenna Temperature to
Flux Density

SRT Operations Screen

Data Output

Neutral Hydrogen in the Galaxy

HI Spectra along
the Galactic Plane

Slide 12

Slide 13

Slide 14

Slide 15

Determination of
Tangential Velocity

Tangential Velocity measured from spectra

How fast does a galaxy rotate?

Angular Velocity

Circular Velocity Q(R)

Rotation Curve

Determination of
Column Density NH

Slide 23

Slide 24

Summary