Plot
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Symb
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Source
* |
Average ? |
Thresholds ? |
N_
data |
QC1
parameter |
Data
downloads |
Remarks |
| method |
value |
unit |
method |
value |
| 1 |
• | QC1DB |
MEAN |
0.20767 |
|
3SIG | ± 0.25065 |
68 |
strehl |
this |
last_yr |
all
|
Ks Filter, Strehl ratio from imaging standard stars in S27 |
| 2 |
+ | QC1DB |
MEAN |
0.10641 |
|
3SIG | ± 0.1708 |
55 |
strehl |
this |
last_yr |
all
|
H Filter, Strehl ratio from imaging standard stars in S27 |
| 3 |
* | QC1DB |
MEAN |
0.04634 |
|
3SIG | ± 0.10668 |
57 |
strehl |
this |
last_yr |
all
|
J Filter, Strehl ratio from imaging standard stars in S27 |
| |
|
*Data sources: QC1DB: QC1 database; LOCAL: local text file
|
This plot
The plotted strehl ratios are estimated from the photometric standard
star observations obtained with camera S13, S27 and S54, regardless the dichroic.
The data points are shown for three broad band
filters Ks, H and J.
General information
Click on any of the plots to see a close-up version.
The latest date is indicated on top of the plot, data points belonging to that date are specially marked.
If configured,
- statistical averages are indicated by a solid line, and thresholds by broken lines
- outliers are marked by a red asterisk. They are defined as data points outside the
threshold lines
- "aliens" (= data points outside the plot Y limits) are marked by a red arrow (↑ or ↓)
- you can download the data for each parameter set if the 'Data downloads' link shows up
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