Chandra Director’s Office
# Proposals per Cycle
900
800
700
600
No. of Proposals Submitted (zoom)
Number
500
90
LP
80
VLP
400
70
Archive
60
LP
Theory
50
VLP
300
Archive
40
200
Theory
30
100
20
10
0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
Cycle
Cycle
Chandra Users’ Committee, 9-10 Apr 2008
All proposals
GO
Number
Proposal Cycle 10
 639 submitted proposals
 *5.6 oversubscribed
(based on time)
64 LP, 8 VLP
Fewer LPs cf Cycle 9 (48)
 57 Archive, 41 Theory
Chandra Director’s Office
Total Time Request
Change from Cycle 9
 Time request: -3%
 LP request: +18%
 VLP request: -40%
 Grating request: +36%
Time Request (ksecs)
Time Requested per Cycle
120000
100000
80000
60000
40000
20000
0
1
2
3
4
5
6
7
8
Cycle
Fraction Grating Time Requested
Oversubscription in Time
0.35
Ratio: Gratings/Total Request
8
0.3
7
0.25
6
5
0.2
4
0.15
3
0.1
2
0.05
1
0
0
1
2
3
4
5
6
7
8
9
Cycle
Chandra Users’ Committee, 9-10 Apr 2008
10
1
2
3
4
5
6
7
8
9
10
Cycle
Chandra Director’s Office
9
10
Gratings Proposals
Grating Time Request
30000
Time
25000
20000
TOTAL
15000
HETG
10000
LETG
5000
0
1
2
3
4
5
6
7
8
9
10
Cycle
Chandra Users’ Committee, 9-10 Apr 2008
Chandra Director’s Office
Oversubscription by Category
 LP over-subscription is
12
10
Oversubscription Ratio
the highest (9.6)
Oversubscription by Category
 Compensated by
opening up of LP/VLP
division (6.7)
8
Archive
Theory
LP
VLP
GO
6
4
2
0
1
2
3
4
5
6
7
8
9
10
Cycle
Oversubscription by Category
12
Oversubscription Ratio
10
8
Archive
Theory
LP
VLP
GO
6
4
2
0
1
2
3
4
5
6
7
8
9
10
Cycle
Chandra Users’ Committee, 9-10 Apr 2008
Chandra Director’s Office
Joint Chandra Proposals:
other Observatory TACs
Joint Proposals
 XMM TAC: 2 approved, in ObsCat
 HST TAC: not done yet
 Spitzer: no joint time this year by
agreement with SSC (end of cold mission)
Chandra Users’ Committee, 9-10 Apr 2008
Chandra Director’s Office
Peer Review
 16-21 June 2007, Hilton, Logan Airport
 13 topical panels, 1 Big Project Panel (BPP)
 Program as last year:
 Tues, Wed: topical panels
 Wed evening: BPP organizational session
 Thurs, Frid: BPP
 Panels:
 1,2: Stars, Planets
 3,4: SN, SNR, NS
 5,6,7: Binaries, Galaxies: Populations
 8,9,10: Clusters, Galaxies: Diffuse
 11,12,13: AGN, Extragalactic surveys
Chandra Users’ Committee, 9-10 Apr 2008
Chandra Director’s Office
Peer Review (cont)
 Changes from last year:
 LP/VLPs all compete for 6 Msecs
 Constrained Observations:
 Same as last year (Easy: 45; Average 35; Diff. 20)
 Assessment take a full observing cycle
 Pat Slane will discuss Cycle 9 scheduling
 Cost Review:
 External: for proposals asking for > fair share
 Internal: remainder
Chandra Users’ Committee, 9-10 Apr 2008
Chandra Director’s Office
Response to October 2007 CUC Report
 LP/VLP: single pool for LP and VLP proposals – done
 Gratings: increase community awareness
 HEAD session (SDS)
 Gratings Atlas (SDS)
 Threads: 1 new proposal thread, more in the works (SDS)
 Survey: Paul Green (next)
 Chandra Source Catalog:
 What’s New item and new section (4.7.1) encouraging archival proposals
using source catalog
 On-line information about catalog (Ian Evans)
 Constrained Observations: Scheduling (Pat Slane)
 CIAO Community Education (Jonathon McDowell)
 Chandra Fellows:
 Planning; webcast plus public posting of talks
 Question of Mentors for Fellows (Nancy Evans)
Chandra Users’ Committee, 9-10 Apr 2008
Chandra Director’s Office