Search found 2 matches
- Thu Apr 11, 2019 8:09 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: First Horizon-Scale Image of a Black... (2019 Apr 11)
- Replies: 128
- Views: 48461
Re: APOD: First Horizon-Scale Image of a Black... (2019 Apr 11)
A schoolboy question, please: Since radio telescopes were used to "photograph" this black hole, how are radio waves rendered into visible light wave lengths? The radio waves are recorded as numeric values representing intensity. Those numbers can be presented as intensities in an image, t...
- Thu Apr 11, 2019 7:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: First Horizon-Scale Image of a Black... (2019 Apr 11)
- Replies: 128
- Views: 48461
Re: APOD: First Horizon-Scale Image of a Black... (2019 Apr 11)
A schoolboy question, please: Since radio telescopes were used to "photograph" this black hole, how are radio waves rendered into visible light wave lengths?