Target visibility
Subaru Telescope can observe targets as low as 15 degrees elevation above the horizon. The following figure shows the length of time a celestial target is above a given elevation angle, as a function of its declination. This figure is also available in postscript format.
The following table lists visibility durations for various target declinations. A web tool to help determine your targets' visibility is also available.
| Target declination | Duration above elevation angle | ||
|---|---|---|---|
| 15° | 20° | 30° | |
| -50° | 04:19 | 01:27 | 00:00 |
| -40° | 06:34 | 05:19 | 01:17 |
| -30° | 07:50 | 06:53 | 04:44 |
| -20° | 08:42 | 07:53 | 06:10 |
| -10° | 09:21 | 08:36 | 07:05 |
| 0° | 09:53 | 09:10 | 07:44 |
| +10° | 10:20 | 09:37 | 08:13 |
| +20° | 10:44 | 10:00 | 08:33 |
| +30° | 11:08 | 10:20 | 08:47 |
| +40° | 11:31 | 10:38 | 08:53 |
| +50° | 11:56 | 10:53 | 08:48 |
| +60° | 12:27 | 11:06 | 08:25 |
| +70° | 13:14 | 11:16 | 07:13 |
| +80° | 15:14 | 11:15 | 00:00 |
| +90° | 24:00 | 00:00 | 00:00 |