Gemini South Semester 2021A
The semester calendar shows multi-instrument queue nights, priority visitor nights, scheduled classical runs and engineering or commissioning blocks.
Horizontal rows represent instrument ports, color-coded to indicate instruments mounted.  Instruments are available for science unless otherwise noted.  
Note: ToO PIs should always check the "what's available now" pages that are linked from the contents list for the most up-to-date information. 
Scheduled classical runs are indicated by the last characters of the program ID, e.g., "C-1", whilst Priority Visitor programs are indicated with "PV".   
Engineering or commissioning blocks are shown across all rows when no backup queue is available (or telescope is closed).  
New and full moon dates are shown on the left and indicated in yellow and grey on the dates lines.  Dates above each month are color-coded to show weekends and holidays in red.
Key: GMOS   F2   visiting instr     Canopus   GSAOI   GPI   Cal unit  
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28        
February Port 1 - up IGRINS                                                     February
27 full Moon Port 2 cal / Zorro                                           Zorro science block   27 full Moon
11 new Moon Port 3 GMOS                   schedule may be subject to change due to COVID-19               11 new Moon
  Port 4 Canopus                                                      
  Port 5                                   F2                            
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
March Port 1 - up IGRINS                                             March
28 full Moon Port 2 cal / Zorro                                             28 full Moon
13 new Moon Port 3 GMOS       schedule may be subject to change due to COVID-19               Telescope maintenance shutdown     13 new Moon
  Port 4 Canopus                                              
  Port 5 F2                                                              
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30  
April Port 1 - up GSAOI                                   GeMS/GSAOI laser run   IGRINS       April
26 full Moon Port 2 cal / Zorro                                                         26 full Moon
11 new Moon Port 3 GMOS                   schedule may be subject to change due to COVID-19                   11 new Moon
  Port 4 Canopus                                                          
  Port 5 F2                               C1     C1           C1            
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
May Port 1 - up IGRINS                                                           May
26 full Moon Port 2 cal / Zorro                                                           26 full Moon
11 new Moon Port 3 GMOS                   schedule may be subject to change due to COVID-19                     11 new Moon
  Port 4 Canopus                                                            
  Port 5 F2         C1                                           C1        
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30  
June Port 1 - up IGRINS             GSAOI                       GeMS/GSAOI laser run     IGRINS June
24 full Moon Port 2 cal / Zorro                                                         24 full Moon
10 new Moon Port 3 GMOS                   schedule may be subject to change due to COVID-19                   10 new Moon
  Port 4 Canopus                                                          
  Port 5 F2                                                              
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
July Port 1 - up IGRINS                     GSAOI                         GeMS/GSAOI laser run July
23 full Moon Port 2 cal / Zorro                                 Zorro science block                   23 full Moon
9 new Moon Port 3 GMOS                   schedule may be subject to change due to COVID-19                     9 new Moon
  Port 4 Canopus                                                            
  Port 5 F2                             C1                                
version: 4 Feb 2021