CCT:1019 7001K
CRI DC:1017 2.16E-2
CRI R01:1002 61.0 (7001K)
CRI R02:1003 71.1 (7001K)
CRI R03:1004 62.1 (7001K)
CRI R04:1005 19.9 (7001K)
CRI R05:1006 16.1 (7001K)
CRI R06:1007 30.3 (7001K)
CRI R07:1008 68.0 (7001K)
CRI R08:1009 33.8 (7001K)
CRI R09:1010 -217.2 (7001K)
CRI R10:1011 65.6 (7001K)
CRI R11:1012 29.4 (7001K)
CRI R12:1013 31.1 (7001K)
CRI R13:1014 54.0 (7001K)
CRI R14:1015 71.7 (7001K)
CRI R15:1016 33.7 (7001K)
CRI Ra:1001 45.3 (7001K)
DC<5.4E-3:1018 false
Spectrum 616: ET-70W-SR-TG-01 Edit
DeleteMeasurement
| Brand |
Exo Terra Rolf C. Hagen Inc. http://www.hagen.com/ |
|---|---|
| Lamp Product |
SunRay 70W ExoTerra Sunray 70W metal halide |
| Lamp ID |
ET-70W-SR-TG-01 (09/2022) Exto Terra 70w Sunray |
| Spectrometer | FLAME UV-Vis (E) |
| Ballast | Exo Terra SunRay 70W Ballast |
| Reflector | |
| Distance | 30 cm |
| Age | 1 hours |
| Originator (measurement) | Thomas Griffiths |
Database entry created:
Thomas Griffiths (Tomaskas Ltd.)
14/Sep/2022 ; updated:
Thomas Griffiths (Tomaskas Ltd.)
28/Mar/2023
Colorimetry
Colorimetry is the science to describe physically the human color perception. The wavelength range 380 nm - 780 nm is visible to humans and detected by three different photoreceptors. Many Reptiles see the range 350 nm - 800 nm and have an additional UV photoreceptor in their retina.
WARNING: The measurement range (350 - 800 nm) is not sufficient for this evaluation! Data is only available in the range 250.14 - 799.849 nm. Results are shown anyway but should be ignored by anyone except experts.
Whereas a spectrometer measures the intensity in every tiny wavelength interval resulting in thousands of individual intensities, the human eye only measures three intensities detected by the three cones. The same is true for the reptile eye with usually three or four photoreceptors. Effectively the detailled spectrum displayed above reduces to a much compacter bar graph displayed below. The photoreceptor sensitivites from these L-Cone, M-Cone, S-Cone, and U-Cone are used, they are chosen as an average of measured reptile photoreceptor sensitivity curves. The bar graph also shows as reference the intensity seen by the three or four photoreceptors for average sunlight (id 1).
From these three numbers the colour coordinate and the correlated colour temperature for humans are calculated using the CIE standard method. I adapted this concept to a "3 cone reptile (M,S,U)" and a "4 cone reptile (L,M,S,U)". I am sure, that this adaption to other colour spaces makes sense mathematically and this is also done in scientific research regarding colour vision of animals, however I have not seen calculation of colour temperatures for other animals in the scientific literature. Even if it is hypothetical, at least this shows, how arbitrary the colour temperature is, and that the colour temperature calculated for humans does not apply to reptiles. The colour spaces also show the colour coordinates of different phases of daylight ((ids 1, 338 – 451, 511 – 513 ), indicated by crosses, coloured in the appriximate colour perceived by a human.
| Human (CIE) | 3 cone reptile | 4 cone reptile | |
|---|---|---|---|
| Cone Excitation | |||
| Colour Coordinate | ( 0.3 ; 0.36 ) | ( 0.28 ; 0.38 ) | ( 0.22 ; 0.22 ; 0.3 ) |
| CCT | 7000 Kelvin | 8600 Kelvin | 7300 Kelvin |
| distance | 0.043 | 0.042 | |
| colour space | 3-D-graph not implemented yet |
Vitamin D3 Analysis
Vitamin D3 is produced by UVB radiation around 300 nm. 7DHC/ProD3 present in the skin is converted to PreD3 when absorbing an UV photon. PreD3 can be converted back to ProD3, to Lumisterol, or to Tachysterol when absorbing another UV photon or can be converted to Vitamin D3 in a warm environment.
This process prevents any overdose of vitamin D3 from UV radiation with a spectrum similar to sunlight. As a comparison the solar spectra at 20°(id:14) and at 85°(id:21) solar angle are shown.
The ratio of the two solarmeters 6.2 (UVB) and 6.5 (UV index) readings has proven a useful and very simply number to acess the spectral shape in the vitamin-d3-active region.
Effective Irradiances
Effective irradiances are calculated for all ranges, actionspectra and radiometers currently present in this database.
The calculation method is a numerical implementation (Simpson's rule) of the formula
To learn more about calculating effective irradiances and radiometers I recommend this excellent report on UVB meters: Characterizing the Performance of Integral Measuring UV-Meters (pdf).
The numbers in the following tables can also be used to estimate certain (effective) irradiances from radiomer readings. Example: If the database lists
- range: UVB (US) = 13.8 µW/cm²
- radiometer: Solarmeter 6.2 = 19.6 µW/cm²
Ranges
total ( 0 nm - 0 nm) 42600 µW/cm² = 426 W/m² UVC ( 0 nm - 280 nm) 1.12 µW/cm² = 0.0112 W/m² non-terrestrial ( 0 nm - 290 nm) 1.43 µW/cm² = 0.0143 W/m² total2 ( 250 nm - 880 nm) 42600 µW/cm² = 426 W/m² UVB (EU) ( 280 nm - 315 nm) 2.54 µW/cm² = 0.0254 W/m² UVB (US) ( 280 nm - 320 nm) 2.94 µW/cm² = 0.0294 W/m² UVA+B ( 280 nm - 380 nm) 3220 µW/cm² = 32.2 W/m² Solar UVB ( 290 nm - 315 nm) 2.23 µW/cm² = 0.0223 W/m² UVA D3 regulating ( 315 nm - 335 nm) 3.21 µW/cm² = 0.0321 W/m² UVA (EU) ( 315 nm - 380 nm) 3220 µW/cm² = 32.2 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 6.05 µW/cm² = 0.0605 W/m² UVA (US) ( 320 nm - 380 nm) 3220 µW/cm² = 32.2 W/m² UVA1 (variant) ( 335 nm - 380 nm) 3220 µW/cm² = 32.2 W/m² UVA1 (medical) ( 340 nm - 400 nm) 5940 µW/cm² = 59.4 W/m² vis. UVA ( 350 nm - 380 nm) 3200 µW/cm² = 32 W/m² VIS Rep3 ( 350 nm - 600 nm) 40600 µW/cm² = 406 W/m² VIS Rep4 ( 350 nm - 700 nm) 42600 µW/cm² = 426 W/m² purple ( 380 nm - 420 nm) 7930 µW/cm² = 79.3 W/m² VIS ( 380 nm - 780 nm) 39400 µW/cm² = 394 W/m² VIS2 ( 400 nm - 680 nm) 36500 µW/cm² = 365 W/m² PAR ( 400 nm - 700 nm) 36600 µW/cm² = 366 W/m² tmp ( 400 nm - 1100 nm) 36700 µW/cm² = 367 W/m² blue ( 420 nm - 490 nm) 10500 µW/cm² = 105 W/m² green ( 490 nm - 575 nm) 13900 µW/cm² = 139 W/m² yellow ( 575 nm - 585 nm) 1060 µW/cm² = 10.6 W/m² orange ( 585 nm - 650 nm) 5710 µW/cm² = 57.1 W/m² red ( 650 nm - 780 nm) 243 µW/cm² = 2.43 W/m² IRA ( 700 nm - 1400 nm) 25.1 µW/cm² = 0.251 W/m² IR2 ( 720 nm - 1100 nm) 17.5 µW/cm² = 0.175 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 1.53 UV-Index Pyrimidine dimerization of DNA 1.07 µW/cm² Photoceratitis 1.04 µW/cm² Photoconjunctivitis 0.95 µW/cm² DNA Damage 1.18 Vitamin D3 1.18 µW/cm² Photosynthesis 24600 µW/cm² Luminosity 116000 lx Human L-Cone 16900 µW/cm² Human M-Cone 15400 µW/cm² Human S-Cone 9300 µW/cm² CIE X 13500 µW/cm² CIE Y 16200 µW/cm² CIE Z 15600 µW/cm² PAR 170000000 mol photons Extinction preD3 14.4 e-3*m²/mol Extinction Tachysterol 38.7 e-3*m²/mol Exctincition PreD3 13700 m²/mol Extinction Lumisterol 11.1 m²/mol Exctincition Tachysterol 77700 m²/mol Extinction 7DHC 13.1 m²/mol L-Cone 13500 µW/cm² M-Cone 13100 µW/cm² S-Cone 17900 µW/cm² U-Cone 16100 µW/cm² UVR - ICNIRP 2004 1.85 Rel Biol Eff Melatonin Supression 13200 µW/cm² Blue Light Hazard 12000 µW/cm² (103 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 1.15 µW/cm² Lumen Reptil 134000 "pseudo-lx" Vitamin D3 Degradation 1.19 µW/cm² Actinic UV 1.85 µW/cm² (0.159 mW/klm) Exctincition Lumisterol 12200 m²/mol Exctincition 7DHC 14400 m²/mol Exctincition Toxisterols 6420 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 27.2 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 0.74 Leybold UVB 2.35 µW/cm² Leybold UVA 2320 µW/cm² Leybold UVC 0.775 µW/cm² DeltaOhm UVB 6.9 µW/cm² DeltaOhm UVC 1.59 µW/cm² Vernier UVB 1.14 µW/cm² Vernier UVA 993 µW/cm² Gröbel UVA 2390 µW/cm² Gröbel UVB 1.6 µW/cm² Gröbel UVC 0.83 µW/cm² Luxmeter 124000 lx Solarmeter 6.4 (D3) 2.31 IU/min UVX-31 102 µW/cm² IL UVB 0.0111 µW/cm² IL UVA 2990 µW/cm² Solarmeter 6.5 (UVI, post 2010) 0.381 UV-Index Solarmeter 6.2 (UVB, post 2010) 3.29 µW/cm² (Solarmeter Ratio = 8.63) Solarmeter AlGaN 6.5 UVI sensor 2.95 UV Index GenUV 7.1 UV-Index 1.13 UV-Index Solarmeter 10.0 (Global Power) (manuf.) 369 W/m² Solarmeter 4.0 (UVA) 61 mW/cm² LS122 (manuf.) 0 W/m² ISM400 (first guess) 206 W/m² LS122 (assumption) 9.49 W/m² ISM400_new 152 W/m² Solarmeter 10.0 (Global Power) (assumption) 332 W/m²