Proposed Observation Time
IRAC Mapping and MIPS Photometry to determine the Spectral Energy Distribution (SED)
|
Target |
Instrument |
Exposure Time
wavelength in microns (u) - time in seconds |
Cycles |
Integration Time |
Total Resource Time needed |
Comments |
|
GTN 7
4c 29.45 |
MIPS Photometry |
24 u = 3
70 u = 3
160 u=10
|
24 u=1
70 u=1
160u=3
|
24u=42s
70u=30s
160u=60s
|
1110 s
|
24,70 u predicted to have large signal/noise; reduced cycles to save time
|
|
GTN 7
4c 29.45 |
IRAC Mapping |
3.6 u = 10 s
5.8 u = 10 s
4.5 u = 10 s
8.0 u = 10 s
|
|
|
378.1 s
|
Gaussian 5 dithering, Large Scale.
|
Visibility:
|
7
|
4C 29.45
|
11:59:31.8
|
14 May 05-
27 Jun 05
|
Beg. window: 81º at 8:30 PM
End window: culminates before sunset: altitude 66 º at 7:30 PM
|
|
7
|
4C 29.45
|
29:14:44
|
16 Dec 05-
28 Jan 06
|
Beg. window: 81 º at 6:41 AM
End window: 81º at 3:40 AM
|
The project was approved by the Spitzer Science Center director. He selected one of our four potential AGNs as our primary target (GTN #7, 4C 29.45) and we edited the proposal to reflect this change. After this decision, Mark Lacy reworked the AORs to refine the time needed to gather the data.
This message from Mark summarizes the change in the AOR:
..... juggled the MIPS exposure times to make sure we get a detection at 160mu (the least sensitive wavelength). I've kept the total length of the AOR almost the same (in fact it's 10s shorter), but the MIPS AOR changed
old: 24mu 3s x 3 cycles
70mu 3s x 5 cycles
160mu 3s x 5 cycles
new: 24mu 3s x 1 cycles
70mu 3s x 1 cycles
160mu 10s x 3 cycles
IRAC was fine as is.
