observing aids
| Title | Posted By | Updated/commented date |
Type |
|---|---|---|---|
| AAVSO Bulletin 74 for 2011 | weo | 1 year 12 weeks ago | Page |
| 2013 JD Calendar | BSJ | 24 weeks 3 days ago | Page |
| Visual Observing Manual - Chinese | BSJ | 23 weeks 6 days ago | Page |
| SID Monitoring Group FAQ | Matthew Templeton | 49 weeks 9 hours ago | Page |
