Gemini South Semester 2023A
Version: Dec 22, 2022 The shutdown planned for April has been postponed into 23B. This schedule will be updated again in January.
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			IGRINS				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
February	Port 1-up	IGRINS					GHOST comm															GSAOI
5 full Moon	Port 2	ZORRO		cal/ZORRO
20 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	GSAOI					Laser run							IGRINS
7 full Moon	Port 2	cal/ZORRO		ZORRO
21 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	IGRINS
6 full Moon	Port 2	cal/ZORRO
20 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	IGRINS															GSAOI													Laser run
5 full Moon	Port 2	cal/ZORRO																									ZORRO
19 new Moon	Port 3			GHOST comm			GHOST																							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	Laser run				IGRINS
3 full Moon	Port 2	cal/ZORRO																													ZORRO Block
18 new Moon	Port 3	GMOS
	Port 4	Canopus
	Port 5	F2				Q-141
		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										GHOST						IGRINS
3 full Moon	Port 2	ZORRO Block				cal/ZORRO
17 new Moon	Port 3	GMOS
	Port 4	Canopus
	Port 5	F2
Version: Dec 22, 2022 The shutdown planned for April has been postponed into 23B. This schedule will be updated again in January.