In this page you can find airmass charts for $\eta$ Car made for the 26th of each month throughout 2014. Click the images below to view the full chart as a PDF file.
The plots were made for 3 sites: Cerro Pachón/Chile, SAAO/Africa, and Mount John/New Zealand. Each plot shows the the airmass and altitude of $\eta$ Car and the Moon (white line), as well as the begin, end, and length of the night. The horizontal axis show the local (top) and UT (bottom) time. The phase of the spectroscopic cycle is indicated by the number in parenthesis. We are adopting the following ephemeris equation:
(1)where ${\rm JD_0}=2452819.2$ and $\Phi$ is the cycle+phase count (current cycle is 12).
Text in red indicates critical epochs to monitor.
- Cerro Pachón/Chile
2014 | ||
---|---|---|
Jan (12.9105) | Feb (12.9258) | Mar (12.9397) |
Apr (12.9550) | May (12.9698) | Jun (12.9852) |
Jul (13.0000) | Aug (13.0153) | Sep (13.0307) |
Oct (13.0455) | Nov (13.0608) | Dec (13.0756) |
- SAAO/Africa
2014 | ||
---|---|---|
Jan (12.9105) | Feb (12.9258) | Mar (12.9397) |
Apr (12.9550) | May (12.9698) | Jun (12.9852) |
Jul (13.0000) | Aug (13.0153) | Sep (13.0307) |
Oct (13.0455) | Nov (13.0608) | Dec (13.0756) |
- Mount John/New Zealand
2014 | ||
---|---|---|
Jan (12.9105) | Feb (12.9258) | Mar (12.9397) |
Apr (12.9550) | May (12.9698) | Jun (12.9852) |
Jul (13.0000) | Aug (13.0153) | Sep (13.0307) |
Oct (13.0455) | Nov (13.0608) | Dec (13.0756) |