CFHT Nānā ao All-Sky Timelapse Videos

These timelapse videos are generated each morning (Hawaii Standard Time (UTC-10)),
and span from sunset to sunrise.

Difference
Infrared
Visible

Click on a date below to view the timelapse video from the selected Nānā ao camera.

 

     
Mon Jun 30 2025
Sun Jun 29 2025
Sat Jun 28 2025
Fri Jun 27 2025
Thu Jun 26 2025
Wed Jun 25 2025
Tue Jun 24 2025
Mon Jun 23 2025
Sun Jun 22 2025
Fri Jun 20 2025
Thu Jun 19 2025
Wed Jun 18 2025
Tue Jun 17 2025
Mon Jun 16 2025

Nānā ao has two cameras, an optical monochromatic camera, and an infrared camera. Both cameras are fitted with 'fish-eye' lenses to capture >90% of the night sky. The difference image is produced by subtracting the previous infrared image from the current infrared image. This reveals changes in the sky, such as the movement of clouds.

Timelapses are only generated on nights when Nānā ao is operational.
Nānā ao does not operate during periods of precipitation, high winds, or when there is ice and snow on the enclosure. Additionally, some timelapses may not encompass the entire night due to such weather.

Current images from Nānā ao can be found on the CFHT Nānā ao page.

Having trouble viewing or want to save this timelapse?
Use this link to download it: Download Timelapse

Nānā ao All-Sky Timelapse Videos Copyright © Canada France Hawaii Telescope Corporation.
Permission is granted to copy, distribute and/or modify these videos under the terms of the GNU Free Documentation License,
Version 1.3, or any later version, published by the Free Software Foundation. A copy of the license can be found here.
For inquiries, contact info@cfht.hawaii.edu