Search
Text Size:
Smaller Text Normal Text Larger Text

Facebook page

Twitter profile

YouTube channel

ALFOSC Arc Lamps and Maps for CCD#14

Mounted lamps

  • For more than a decade we have the following lamps installed in ALFOSC: Halogen, Helium, Neon, Thorium-Argon (faint).
  • See this page for typical exposure times for the different grisms.
  • Note that Helium and Neon can be switched-on at the same time, as in fact any other combination of installed lamps.

    Spectral lamps from Osram: Ne, He
    Hollow cathode lamps from Cathodeon/Heraeus: Th-Ar

    Other lamps

    Check here for info on other arc lamps used or tested with the old CCD#7 or CCD#8.


    Line lists

    The line lists used for these maps are based on IRAF line lists, updated with identifications by Moore (1959) and Coluzzi's (1993).
    The ThAr list was checked against obvious blends using FIES(NOT)/MUSICOS(ING)/UES(ING) arc maps.
  • Helium
  • Neon
  • Thorium Argon

    A description of the IRAF line lists used: idhenear.dat and thar.dat.


    Arc maps for wavelength calibration


    NB: These arc maps give no indication of exposure times needed!!
    NB: These arc maps were made using a 0.5 arcsec slit!!

    		range He Ne ThAr
    Grism #3 3200-7070 map   zoom map   zoom map   zoom
    Grism #4 3200-9600 map   zoom map   zoom map   zoom
    Grism #5 5000-10700 map   zoom map   zoom map   zoom
    Grism #6 3200-5810 map   zoom not useful map
    Grism #7 3650-7110 map   zoom map   zoom map   zoom
    Grism #8 5680-8580 map map   zoom map   zoom
    Grism #9 + CD #10 3300-10350 !
    Grism #9 + CD #11 3900-10350 !
    Grism #9 + CD #12 5200-11000 !
    Grism #10 3300-11000 map   zoom map   zoom map   zoom
    Grism #11 a 3880-10630 map   zoom map   zoom map   zoom
    Grism #12 5100-11000 map map   zoom map   zoom
    Grism #13 + order sorter 4800-5800 !
    Grism #13 + CD #10 3350-8650 !
    Grism #14 3200-6380 map   zoom map   zoom map   zoom
    Grism #15 3200-9125 !
    Grism #16 3460-5220 map   zoom not useful map   zoom
    Grism #17 6350-6850 !
    Grism #18 3450-5350 map   zoom not useful map   zoom
    Grism #19 4400-6950 map   zoom map   zoom map
    Grism #20 5650-10150 map map   zoom map   zoom

    Notes:

  • Wavelength ranges marked '!' are for CCD#8, the CCD#14 range is about 10% wider
  • If there is no map in the table above yet, try a CCD#7/CCD#8 map
  • a) Grism 11 was used in the filter wheel