DarkCast
12.8
Poor
37/39 factors
00:54 UTC · Mar 03
13.8
Peak
Poor in +47h
Wed Mar 04, 23:54 UTC
Sky Clarity
Fair
40
Moderate clouds or haze present
Darkness
Poor
0
Significant light pollution or bright moon
Celestial
Good
75
Some celestial interference present
Conditions
Fair
39
Risk of dew or frost on optics
Site
Coordinates
51.51, -0.13
Elevation
20 m
Light Pollution
11.3 mag
Biggest Drags on Score
0.0
Light Pollution
0.0
Seeing
0.01
Local
0.12
Weather
0.17
Seeing
74
Transparency
24.0% weight| Factor | Normalized | Raw | Confidence |
|---|---|---|---|
|
Wildfire Smoke Density
GATE
|
1.0
|
0.03 — | 0.82 |
|
Fog Probability
GATE
|
1.0
|
0.31 — | 0.83 |
|
Total Cloud Fraction
|
1.0
|
0.00 [0,1] | 0.79 |
|
Ozone Column
|
0.97
|
306 DU | 0.93 |
|
Airglow Intensity
|
0.86
|
71.90 R | 0.6 |
|
Aod 550nm
|
0.78
|
0.11 — | 0.87 |
|
Precipitable Water Vapor
|
0.67
|
16.68 mm | 0.83 |
|
Volcanic Aerosol Stratospheric
|
0.58
|
0.04 — | 0.69 |
|
Humidity Profile Extinction
RESIDUAL
|
0.37
|
0.44 — | 0.83 |
75
Celestial
15.0% weight| Factor | Normalized | Raw | Confidence |
|---|---|---|---|
|
Solar Depression Angle
|
1.0
|
44.53 ° | 1.0 |
|
Aurora Activity
|
1.0
|
0.00 Kp [0-9] | 0.61 |
|
Zodiacal Light Intensity
|
1.0
|
0.00 — | 0.9 |
|
Lunar Sky Brightness Contribution
|
0.44
|
2.82 Δmag/arcsec² | 0.95 |
|
Galactic Plane Brightness
RESIDUAL
|
0.86
|
0.14 — | 0.95 |
60
Weather
14.0% weight| Factor | Normalized | Raw | Confidence |
|---|---|---|---|
|
Precipitation Probability
GATE
|
1.0
|
0.00 — | 0.74 |
|
Surface Wind Speed
|
0.87
|
5.12 km/h | 0.83 |
|
Ground Thermal Emission Phase
|
0.74
|
0.74 — | 1.0 |
|
Barometric Pressure Trend
|
0.64
|
1.90 hPa/3hr | 0.83 |
|
Frost Dew On Optics Risk
|
0.12
|
0.88 — | 0.83 |
|
Dew Point Convergence Rate
RESIDUAL
|
1.0
|
0.00 K/hr | 0.88 |
|
Ambient Temperature Comfort
RESIDUAL
|
1.0
|
282 K | 0.88 |
|
Condition Stability Forecast
RESIDUAL
|
0.85
|
0.85 — | 0.83 |
7
Seeing
20.0% weight| Factor | Normalized | Raw | Confidence |
|---|---|---|---|
|
Boundary Layer Gradient
|
1.0
|
0.03 K/km | 0.88 |
|
Jet Stream Speed
|
0.92
|
11.63 kt | 0.79 |
|
Terrain Turbulence Risk
|
0.0
|
1.00 — | 0.83 |
|
Scintillation Index Estimate
RESIDUAL
|
1.0
|
0.50 " | 0.88 |
|
Upper Atmosphere Wind Shear
RESIDUAL
|
0.76
|
12.15 kt | 0.79 |
|
Inversion Layer Strength
RESIDUAL
|
0.17
|
0.00 K | 0.88 |
0
Light Pollution
19.0% weight| Factor | Normalized | Raw | Confidence |
|---|---|---|---|
|
Nearest City Skyglow
|
0.99
|
1.19 km | 0.85 |
|
Zenith Sky Brightness
|
0.0
|
11.34 mag/arcsec² | 0.9 |
|
Cloud Amplified Skyglow
RESIDUAL
|
1.0
|
0.00 Δmag/arcsec² | 0.79 |
|
Commercial Shutoff Factor
RESIDUAL
|
0.61
|
0.18 [0,1] | 0.6 |
18
Local
8.0% weight| Factor | Normalized | Raw | Confidence |
|---|---|---|---|
|
Satellite Trail Density
|
0.99
|
0.72 tr/hr | 0.75 |
|
Horizon Obstruction Index
|
0.85
|
4.53 ° | 0.9 |
|
Local Aqi
|
0.73
|
53.11 AQI | 0.82 |
|
Local Thermal Sources
|
0.7
|
0.30 — | 0.7 |
|
Site Elevation
|
0.01
|
20.01 m AMSL | 1.0 |
Site Characteristics
Elevation
20 m
Horizon
4.5°
Light Pollution
11.3 mag
Nearest City
1.2 km
pop 8.6M
Nearest Water
36.3 km
Thermal Index
0.3
Roughness
0.028
Elev. Change
12 m
Coordinates
51.51, -0.13
Algorithm
WGM = 12.82
x
Gate = 0.9994
=
12.8
/ 100
NSQI v0.3.0