40-foot telescope

The 40-foot telescope is a radio telescope at Green Bank Observatory designed to capture and amplify signals from distant stars and galaxies. The large dish can rotate to focus on different regions of the sky for astronomical research.

The telescope was constructed in the 1960s and became one of the primary instruments for radio astronomy research at that time. It helped astronomers gather new information about distant cosmic objects.

Scientists and researchers from multiple institutions utilize this telescope for educational programs and training in radio astronomy observation techniques.

The telescope sits in a designated radio-free zone where strong electronic signals are limited to ensure clear measurements. Visitors should expect clear nights and stable conditions to achieve the best observational results.

The instrument primarily serves as a training facility where young astronomers learn fundamental observation methods before moving on to larger instruments. This educational function makes it an important stepping stone for emerging researchers.

Location: Green Bank

Part of: Green Bank Observatory

GPS coordinates: 38.43722,-79.83139

Latest update: December 13, 2025 12:23