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17 Feb 2026

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ESO for the Public

ESO's Governing Bodies

ESO's ruling body is its Council, which delegates day to day responsibility to the Executive under ESO's Director General. Other governing bodies of ESO are: the Finance Committee (FC), the Scientific Technical Committee (STC), the Observing Programmes Committee (OPC) and the Users Committee (UC).

Information about the meeting dates of the various committees is available via the meetings calender below. Please note that in most cases committees documents have restricted access and are password protected.

ESO procedures (password protected):

ESO Privacy Notice for the Recoding of Meetings (password protected):

Council and Committee Meetings in 2026

Council	Cou 173 (extraordinary): 10 March	Cou 174: 9-10 June	Cou 175: 1-2 Dec
Committee of Council	CoC 108: 10-11 March	CoC 109: 6-7 Oct
Finance Committee	FC 178: 6-7 May	FC 179 (extraordinary): 22 September	FC 180: 3-4 Nov
Scientific Technical Committee	STC 108: 20-21 Apr	STC 109: 21-22 Oct
European Science Advisory Committee	ESAC: 17 Feb	ESAC:
ELT Subcommittee (ESC)	ESC: 16-17 Apr	ESC:
La Silla Paranal Committee	LSP: 16-17 Apr	LSP:
Observing Programmes Committee	OPC 118: 26-27 Nov
Users Committee	UC 50: 27-28 Apr
ELT Management Advisory Committee (EMAC)

Council and Committee Meetings in 2025

Council	Cou 169 (extraordinary): 5 March	Cou 170: 3-4 June	Cou 171 (extraordinary): 6-8 Oct	Cou 172: 2-3 Dec
Committee of Council	CoC 106: 4-5 Mar	CoC 107: 9 Oct
Finance Committee	FC 175: 6-7 May	FC 176 (extraordinary): 26 September	FC 177: 10-11 Nov
Scientific Technical Committee	STC 106: 24-25 Apr	STC 107: 22-23 Oct
European Science Advisory Committee	ESAC: 21 Feb	ESAC: 13-14 Oct
ELT Subcommittee (ESC)	ESC: 2-3 Apr	ESC: 13 Oct
La Silla Paranal Committee	LSP: 3-4 Apr	LSP: 16-17 Oct
Observing Programmes Committee	OPC 116: 22 May	OPC 117: 27-28 Nov
Users Committee	UC 49: 28-29 Apr
ELT Management Advisory Committee (EMAC)	EMAC 11: 22-23 Jan	EMAC 12: 19-21 Nov

Council and Committee Meetings in 2024

Council	Cou 166 (extraordinary): 6 March	Cou 167: 4-5 June	Cou 168: 3-4 Dec
Committee of Council	CoC 104: 5-6 Mar	CoC 105: 8-9 Oct
Finance Committee	FC 172: 7-8 May	FC 173 (extraordinary): 24 September	FC 174: 5-6 Nov
Scientific Technical Committee	STC 104: 23-24 Apr	STC 105: 22-23 Oct
European Science Advisory Committee	ESAC: 29 Feb	ESAC: 8-9 Oct
ELT Subcommittee (ESC)	ESC: 9-10 Apr	ESC: 14-15 Oct
La Silla Paranal Committee	LSP: 18-19 Apr	LSP: 10-11 Oct
Observing Programmes Committee	OPC 114: 21-22 May	OPC 115: 19 Nov
Users Committee	UC 48: 25-26 Apr
ELT Management Advisory Committee (EMAC)

Council and Committee Meetings in 2023

Council	Cou 163: 6-7 June	Cou 164 (extraordinary): 10 Oct	Cou 165: 6-7 Dec
Committee of Council	CoC 102: 7-8 Mar	CoC 103: 10-11 Oct
Finance Committee	FC 169: 3-4 May	FC 170 (extraordinary): 21 Sep	FC 171: 7-8 Nov
Scientific Technical Committee	STC 102: 17-18 April	STC 103: 24-25 Oct
European Science Advisory Committee	ESAC: 7 March	ESAC: 18-19 Sept
ELT Subcommittee (ESC)	ESC: 3-4 April	ESC: 19-20 Oct
La Silla Paranal Committee	LSP: 27-28 March	LSP: 23 Oct
Observing Programmes Committee	OPC 112:23-24 May	OPC 113:21 Nov
Users Committee	UC 47: 20-21 Apr
ELT Management Advisory Committee (EMAC)	EMAC 10: 30-31 Oct

Council and Committee Meetings in 2022

Council	Cou 159 (extraordinary): 8 Mar	Cou 160: 7-8 Jun	Cou 161 (extraordinary): 4 Oct	Cou 162: 6-7 Dec
Committee of Council	CoC 100: 8-9 Mar	CoC 101: 4 Oct
Finance Committee	FC 166: 3-4 May	FC 167 (extraordinary): 20 Sep	FC 168: 7-8 Nov (Chile)
Scientific Technical Committee	STC 100: 26-27 Apr	STC 101: 25-26 Oct
European Science Advisory Committee	ESAC: 7-9 Feb	ESAC: 15 Sept
ELT Subcommittee (ESC)	ESC: 5-6 Apr	ESC: 19-20 Oct
La Silla Paranal Committee	LSP: 12-13 Apr	LSP: 17-18 Oct
Observing Programmes Committee	OPC 110:24-25 May	OPC 111:23 Nov
Users Committee	UC 46: 28-29 Apr
ELT Management Advisory Committee (EMAC)	EMAC 09: 21-23 Nov

Council and Committee Meetings in 2021

Council	Cou 156: 8-9 Jun	Cou 157 (extraordinary): 27 Sep	Cou 158: 7-8 Dec
Committee of Council	CoC 98: 3-4 Mar	CoC 99: 27-28 Sep
Finance Committee	FC 163: 4-5 May	FC 164 (extraordinary): 20 Sep	FC 165: 9-10 Nov
Scientific Technical Committee	STC 98: 29-30 Apr	STC 99: 25-27 Oct
European Science Advisory Committee	ESAC: 22 Feb	ESAC: 29 Sept (09:00-12:30 CEST), 1 Oct (09:00-13:00 CEST)
ELT Subcommittee (ESC)	ESC: 19-20 Apr	ESC: 18-19 Oct
La Silla Paranal Committee	LSP: 19-20 Apr	LSP: 20-21 Oct (14:00-17:00 CEST)
Observing Programmes Committee	OPC 108:1-2 June	OPC 109: 23-24 Nov
Users Committee	UC 45: 27-28 Apr
ELT Management Advisory Committee (EMAC)	EMAC 08: 4-5 Nov

Council and Committee Meetings in 2020

Council	Cou 153: (extraordinary): 4 Mar	Cou 154: 9-10 Jun	Cou 155: 1-2 Dec
Committee of Council	CoC 96: 3-4 Mar	CoC 97: 5-6 Oct
Finance Committee	FC 159 (extraordinary): 18 Feb	FC 160: 12-13 May	FC 161 (extraordinary): 15 Sep	FC 162: 10-11 Nov
Scientific Technical Committee	STC 95:16-17 Apr	STC 96 (extraordinary):2 Oct	STC 97:27-28 Oct
European Science Advisory Committee	ESAC:20 Feb	ESAC:30 Sept
ELT Subcommittee (ESC)	ESC:3 Apr	ESC:12-13 Oct
La Silla Paranal Committee	LSP:14-15 Apr	LSP:19-20 Oct
Observing Programmes Committee	OPC 106:29-30 June	OPC 107: suspended
Users Committee	UC 44: 29-30 Apr
ELT Management Advisory Committee (EMAC)	EMAC 07: 19-20 Oct

Council and Committee Meetings in 2019

Council	Cou 150: 4-5 Jun	Cou 151 (extraordinary): 9 Oct	Cou 152: 3-4 Dec
Committee of Council	CoC 94: 5-6 Mar	CoC 95: 8-9 Oct
Finance Committee	155 FC (extraordinary): 19 Feb	156 FC: 7-8 May	157 FC (extraordinary): 17 Sep	158 FC: 4-5 Nov
Scientific Technical Committee	STC 93:2-3 May	STC 94:22-23 Oct
European Science Advisory Committee	ESAC:15 Feb	ESAC:9-10 Oct
ELT Subcommittee (ESC)	ESC:12 Apr	ESC:14 Oct
La Silla Paranal Committee	LSP:26 Apr	LSP:17 Oct
Observing Programmes Committee	OPC 104:14-16 May	OPC 105:19-21 Nov
Users Committee	UC 43: 29-30 Apr
ELT Management Advisory Committee (EMAC)	EMAC 06: 18-19 Nov

Council and Committee Meetings in 2018

Council	Cou 146 (extraordinary): 7 Mar	Cou 147: 5-6 Jun	Cou 148 (extraordinary): 10 Oct	Cou 149: 4-5 Dec
Committee of Council	CoC 92: 6-7 Mar	CoC 93: 10-11 Oct
Finance Committee	151 FC (extraordinary): 20 Feb	152 FC: 8-9 May	153 FC (extraordinary): 21 Sep	154 FC: 6-7 Nov
Scientific Technical Committee	STC 91:24-25 Apr	STC 92:23-24 Oct
European Science Advisory Committee	ESAC:19 Feb	ESAC:19-20 Sept
ELT Subcommittee (ESC)	ESC:11 Apr	ESC:17 Oct
La Silla Paranal Committee	LSP:23 Apr	LSP:22 Oct
Observing Programmes Committee	OPC 102:22-24 May	OPC 103:20-22 Nov
Users Committee	UC 42: 26-27 Apr

Council and Committee Meetings in 2017

Council	Cou 142: 31 May-1 Jun	Cou 143 (extraordinary): 6 Jul	Cou 144 (extraordinary): 10 Oct	Cou-145: 6-7 Dec
Committee of Council	CoC 90: 7-8 Mar	CoC 91: 10-11 Oct
Finance Committee	148 FC 3-4 May	149 FC (extraordinary) 19 Sep	150 FC 6-7 Nov
Scientific Technical Committee	STC 89:23-24 Apr	STC 90:24-25 Oct
European Science Advisory Committee	ESAC:17 Feb	ESAC:20-21 Sept
ELT Subcommittee (ESC)	ESC:28 March	ESC:12 Oct
La Silla Paranal Committee	LSP:3 Apr	LSP:23 Oct
Observing Programmes Committee	OPC 100:16-18 May	OPC 101:14-16 Nov
Users Committee	UC 41: 9-10 May

Council and Committee Meetings in 2016

Council	Cou 138: 7-8 Jun	Cou 139 (extraordinary): 7 Oct	Cou 140 (extraordinary): 3 Nov	Cou 141: 7-8 Dec
Committee of Council	CoC 88: 2-3 Mar	CoC 89: 6-7 Oct
Finance Committee	144 FC (extraordinary): 3 Feb	145 FC: 3-4 May	146 FC (extraordinary): 27 Sep	147 FC: 8-9 Nov (Chile)
Scientific Technical Committee	STC 87: 26-27 Apr	STC 88: 25-26 Oct
European Science Advisory Committee	ESAC: 2 Feb	ESAC: 29-30 Sept
E-ELT Subcommittee (ESC)	ESC: 25 Apr	ESC: 18 Oct
La Silla Paranal Committee	LSP: 25 Apr	LSP: 24 Oct
Observing Programmes Committee	OPC 98:18-20 May	OPC 99:15-17 Nov
Users Committee	UC 40: 18-19 Apr

Council and Committee Meetings in 2015

Council	Cou 134 (extraordinary): 4 Mar	Cou 135: 10-11 Jun	Cou 136 (extraordinary) : 8 Oct	Cou 137 - 8-9 Dec
Committee of Council	CoC 86: 3-4 Mar	CoC 87: 7-8 Oct
Finance Committee	141 FC: 12-13 May	142 (Extraordinary) FC: 30 Sep	143 FC: 3-4 Nov
Scientific Technical Committee	STC 85: 21-22 Apr	STC 86: 20-21 Oct
European Science Advisory Committee	ESAC: 29 Jan	ESAC: 22 Sep
E-ELT Subcommittee (ESC)	ESC: 20 Apr	ESC: 19 Oct
La Silla Paranal Committee	LSP: 20 Apr	LSP: 19 Oct
Observing Programmes Committee	OPC 96:19-21 May	OPC 97:17-19 Nov
Users Committee	UC 39: 27-28 Apr

Council and Committee Meetings in 2014

Council	Cou 130 (extraordinary): 5 Mar	Cou 131: 3-4 Jun	Cou 132 (extraordinary): 8 Oct	Cou 133: 3-4 Dec
Committee of Council	CoC 84: 4-5 Mar	CoC 85: 7-8 Oct
Finance Committee	138 FC: 6-7 May	139 FC (extraordinary): 16 Sep	140 FC: 4-5 Nov
Scientific Technical Committee	STC 82:8-9 Apr	STC 83 (extraordinary): 19 Sep	STC 84: 21-22 Oct
European Science Advisory Committee	ESAC: 7 Apr	ESAC: 20 Oct
E-ELT Subcommittee (ESC)	ESC: 7 Apr	ESC: 20 Oct
La Silla Paranal Committee	LSP: 7 Apr	LSP: 20 Oct
Observing Programmes Committee	OPC 94:19-22 May	OPC 95:18-20 Nov
Users Committee	UC 38: 10-11 Apr

Council and Committee Meetings in 2013

Council	Cou 127 (extraordinary): 12 Mar	Cou 128: 5-6 Jun	Cou 129: 4-5 Dec
Committee of Council	CoC 82: 11-12 Mar	CoC 83: 9-10 Oct
Finance Committee	FC 135: 7-8 May	FC 136: 7 Oct	FC 137: 6-7 Nov (Chile)
Scientific Technical Committee	STC 80: 23-24 Apr	STC 81: 22-23 Oct
European Science Advisory Committee	ESAC: 22 Apr	ESAC: 21 Oct
E-ELT Subcommittee (ESC)	ESC: 21 Oct
La Silla Paranal Committee	LSP: 22 Apr	LSP: 21 Oct
Observing Programmes Committee	OPC 92:21-24 May	OPC 93:18-21 Nov
Users Committee	UC 37:25-26 Apr

Council and Committee Meetings in 2012

Council	Cou 125: 11-12 Jun	Cou 126: 4-5 Dec
Committee of Council	CoC 80: 6-7 Mar	CoC 81: 10-11 Oct
Finance Committee	FC 133: 8-9 May	FC 134: 6-7 Nov
Scientific Technical Committee	STC 78: 17 -18 Apr	STC 79: 23-24 Oct
European Science Advisory Committee	ESAC: 16 April		ESAC: 22 October
E-ELT Science and Engineering Committee	ESE: 28-29 June
La Silla Paranal Committee	LSP: 16 April		LSP(E): 22 October
Observing Programmes Committee	OPC 90:21 - 25 May	OPC 91:19-22 Nov
Users Committee	UC 36: 23-24 Apr

Overview of Previous Meetings

Council	Cou 105,Cou 107,Cou 108,Cou 109,Cou 110,Cou 111,Cou 112,Cou 113,Cou 114,Cou 115,Cou 116,Cou 117,Cou 118,Cou 119,Cou 120,Cou 121,Cou 122,Cou 123,Cou 124
Committee of Council
Finance Committee	FC 119,FC 120,FC 121,FC 122,FC 123,FC 124,FC 125,FC 126,FC 127,FC 128th,FC 129,FC 130,FC 131,FC 132
Scientific Technical Committee	STC 56,STC 57,STC 58,STC 59,STC 60,STC 61,STC 62,STC 63,STC 64,STC 65,STC 66,STC 67,STC 68,STC 69,STC 70,STC 71,STC 72,STC 73,STC 74,STC 75,STC 76,STC 77
Observing Programmes Committee	OPC 74,OPC 75,OPC 76,OPC 77,OPC 78,OPC 79,OPC 80,OPC 81,OPC 82,OPC 83,OPC 84,OPC 85,OPC 86,OPC 87,OPC 88,OPC 89,OPC 90,OPC 91,OPC 92,OPC93,OPC94,OPC95,OPC96,OPC97,OPC98,OPC99,OPC100,OPC101,OPC102,OPC103,OPC 104,OPC 105,OPC 106,OPC108,OPC109,OPC110,OPC111,OPC112
Users Committee	UC 26,UC27,UC 28,UC29,UC 30,UC31,UC32,UC 33,UC 34,UC 35,UC 36

Last Update: 02.02.26 © ESO	Send us your comments \|Subscribe to Newsletter \|Privacy Statement

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