Gemini South Semester 2025A
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.
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.  Dates above each month are color-coded to show weekends (orange) and holidays (green)
Key:	GMOS			F2			IQUEYE				Canopus					GSAOI				Cal/ZORRO					GHOST				SHUTDOWN
		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
February	Port 1-up	GHOST									IQUEYE/C-1
12 full Moon	Port 2	cal/ZORRO
27 new Moon	Port 3	GMOS
	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	GHOST
13 full Moon	Port 2	cal/ZORRO									ZORRO run
28 new Moon	Port 3	GMOS
	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	GHOST						GSAOI								Laser run						GHOST
12 full Moon	Port 2	cal/ZORRO
27 new Moon	Port 3	GMOS
	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
May	Port 1-up	GHOST				GSAOI								Laser run						GHOST
12 full Moon	Port 2	cal/ZORRO								ZORRO run
27 new Moon	Port 3	GMOS
	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
June	Port 1-up	GHOST
10 full Moon	Port 2	cal/ZORRO
25 new Moon	Port 3	GMOS
	Port 4	Canopus
	Port 5
		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	GHOST
10 full Moon	Port 2	cal/ZORRO	ZORRO run																						Telescope
24 new Moon	Port 3	GMOS																							Shutdown
	Port 4	Canopus																							A&G
	Port 5	F2																							Maintenance
Version: Dec 13, 2024