1. Obsolete names for Sun telescopes include heliograph and photoheliograph.

2. Actinometers, and Pyranometers (and signaling heliographs) Below are checklists of Sunshine recorders and solar-related instruments on postal items (stamps, …

3. In the modern era, semaphores and wireless solar telegraphs called heliographs were developed, using coded signals to communicate with their recipients.