Astronomija i astrofizika I Fotometrija i spektroskopija

Tomislav JurkićDepartment of PhysicsUniversity of Rijeka, Croatia

r

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