The Ritter Observatory Public Archive of Spectra of Normal KM Stars


Sample échelle spectrum of the K giant α Serpentis in the Hα region.


Sample LDS spectrum of the BY Dra-type variable YY Gem.

File names are in the form: observation date followed by serial number, followed by file extension .fits, as in YYYYMMDD.NNN.fits. Right click on link to download desired file.

  • α Boo, HD 124897 (K1.5 III):
  • α Her, HD 156014 J (M5 Iab):
  • α Ori, HD 39801 (M2 Iab):
  • α Ser, HD 140573 (K2 IIIb):
  • β Peg, HD 217906 (M2.5 II):
  • δ Oph, HD 146051 (M0.5 III):
  • ε Cyg, HD 197989 (K0 III):
  • η Per, HD 17506 (K3 Ib):
  • γ-1 And, HD 12533 (K3 IIb):
  • λ Aqr, HD 216386 (M2 III):
  • π Her, HD 156283 (K3 Iab):
  • W Boo, HD 129712 (M3 III):
  • ξ Cyg, HD 200905 (K4.5 Ib):
    Document custodians: Greg Thompson

    Page last updated: 2/19/09