Difference between revisions of "EGAL06 C2"
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The strategy, each observing night (80 consecutive minutes [^1]), is as follow: | The strategy, each observing night (80 consecutive minutes [^1]), is as follow: | ||
| + | |||
* OFF-2 region for 20 minutes (1 run), during which the relative movement of the sky is 5 deg (AZ1, ZD1 → AZ2, ZD2) | * OFF-2 region for 20 minutes (1 run), during which the relative movement of the sky is 5 deg (AZ1, ZD1 → AZ2, ZD2) | ||
* ON region for 20+20 minutes (2 runs), during which the relative sky movement is 10 deg (AZ1, ZD1 → AZ2, ZD2 → AZ3, ZD3). | * ON region for 20+20 minutes (2 runs), during which the relative sky movement is 10 deg (AZ1, ZD1 → AZ2, ZD2 → AZ3, ZD3). | ||
* OFF-1 region for 20 minutes (1 run, AZ2, ZD2 → AZ3, ZD3). | * OFF-1 region for 20 minutes (1 run, AZ2, ZD2 → AZ3, ZD3). | ||
| − | The OFF at lower RA should come first (OFF-2) | + | The OFF at lower RA should come first (OFF-2). |
| − | [^1] take the data ideally with no interruptions and with similar NSB if possible, so that the AZ, ZD conditions in the OFF and ON match as intended. If for some reason there is some hardware problem and the 80 minutes need to get significantly reduced, alternative schedules for 60 minute, 40 minute & 30 minutes are listed below: | + | [^1] take the data ideally with no interruptions and with similar NSB if possible, so that the AZ, ZD conditions in the OFF and ON match as intended. If for some reason there is some hardware problem and the 80 minutes need to get significantly reduced, '''alternative schedules for 60 minute, 40 minute & 30 minutes''' are listed below: |
- Option A (60 minute): Do OFF-2, ON, ON, OFF-1 as usual, but with 15' wobbles. This will slightly alter the ZD, AZ conditions, but not by too much. | - Option A (60 minute): Do OFF-2, ON, ON, OFF-1 as usual, but with 15' wobbles. This will slightly alter the ZD, AZ conditions, but not by too much. | ||
Revision as of 22:13, 4 June 2024
Contents
Proposal
Proposal: EGAL06:Observations of galaxy clusters: Coma Cluster
PI: Mireia Nievas Rosillo (mnievas@iac.es)
Source information
Source: ComaCluster-Center
RA (J2000): 194.7752 deg
Dec (J2000): 27.6562 deg
Source: ComaCluster-OFF1
RA (J2000): 200.4221 deg
Dec (J2000): 27.6562 deg
Source: ComaCluster-OFF2
RA (J2000): 189.1283 deg
Dec (J2000): 27.6562 deg
Observational settings/limits
ComaCluster-Center, ComaCluster-OFF1, ComaCluster-OFF2 Min Zenith [deg] = 0
Max Zenith [deg] = 50
Night Sky Background = Both
Wobbles = ON
Observational strategy
The strategy, each observing night (80 consecutive minutes [^1]), is as follow:
- OFF-2 region for 20 minutes (1 run), during which the relative movement of the sky is 5 deg (AZ1, ZD1 → AZ2, ZD2)
- ON region for 20+20 minutes (2 runs), during which the relative sky movement is 10 deg (AZ1, ZD1 → AZ2, ZD2 → AZ3, ZD3).
- OFF-1 region for 20 minutes (1 run, AZ2, ZD2 → AZ3, ZD3).
The OFF at lower RA should come first (OFF-2).
[^1] take the data ideally with no interruptions and with similar NSB if possible, so that the AZ, ZD conditions in the OFF and ON match as intended. If for some reason there is some hardware problem and the 80 minutes need to get significantly reduced, alternative schedules for 60 minute, 40 minute & 30 minutes are listed below:
- Option A (60 minute): Do OFF-2, ON, ON, OFF-1 as usual, but with 15' wobbles. This will slightly alter the ZD, AZ conditions, but not by too much.
- Option B (40 minutes): 1 run in OFF-2 + 1 run on ON
- Option C (40 minutes): 1 run in ON + 1 run in OFF-1.
- Option D (30 minute): do either option B or C, but with 15' runs.
If less than 30 minute are available, skip to the next source.
Instructions for shifters
Observations in ON mode. If at some point RTA works with ON-OFF observations, please report any hotspot in the skymaps.
