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Astronomija i astrofizika I Fotometrija i spektroskopija
Tomislav JurkićDepartment of PhysicsUniversity of Rijeka, Croatia
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PODRUČJE Valna duljina
Gama zrake l < 0.1 A
X-zrake (rendgentsko zr.) 0.1 A – 100 A (0.01 – 10 nm)
Ultraljubičasto (UV) 100 A – 4000 A (10 – 400 nm)
Optičko (V – vizualno) 4000 A – 7000 A (400 – 700 nm)
Infracrveno (IR) 7000 A – 1 mm (700 nm – 1000 mm)
Mikrovalno 1 mm – 10 cm
Radio l > 10 cm
FILTER l (nm) Dl (nm)
U 358 55
B 439 99
V 545 85
Fotometrijski sustavi
Johnson & Morgan (1953): UBV
FILTER l (mm) Dl (mm)
U 0.36 0.04
B 0.44 0.10
V 0.55 0.08
R 0.70 0.21
I 0.90 0.22
J 1.25 0.30
H 1.62 0.20
K 2.20 0.60
L 3.40 0.90
M 5.0 1.1
N 10.2 6.0
Fotometrijski sustavi
Johnson (1965): UBVRI(JHKLMN)
Vegin sustav magnituda
AB sustav magnituda
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