1. Programs & Projects
  2. Mid-Scale Observatories — Cerro Tololo Inter-American Observatory
  3. Current Instruments
  4. COSMOS
  5. CKOSMOS Calibration Lamp Exposure Times
  6. CKOSMOS Calibration Lamp Exposure Times

CKOSMOS Calibration Lamp Exposure Times

 

COSMOS at the CTIO Blanco 4-m
Lamp Intensity1,2 Disperser Slit Exposure Time (s) Peak Counts
 
Dome High 255 Blue (b2k) 3pxB, 3pxC, 3pxR 60, 45, 30 ~120000, ~122000, ~125000
HgAr Penray N/A Blue (b2k) 3pxB, 3pxC, 3pxR 0.3, 0.3, 0.3  
HgNe Penray N/A Blue (b2k) 3pxB, 3pxC, 3pxR 0.3, 0.3, 0.3  
CuHeAr Hollow Cathode N/A Blue (b2k) 3pxB, 3pxC, 3pxR 60, 60, 60  
 
Dome High 150 Red (r2k) 3pxB, 3pxC, 3pxR 30, 25, 20 ~125000, ~125000, ~110000
HgAr Penray N/A Red (r2k) 3pxB, 3pxC, 3pxR 0.3, 0.3, 0.3  
HgNe Penray N/A Red (r2k) 3pxB, 3pxC, 3pxR 0.3, 0.3, 0.3  
CuHeAr Hollow Cathode N/A Red (r2k) 3pxB, 3pxC, 3pxR 1, 1, 1  
 
Dome High 255 Wide (l2k) 3pxR 30  
HgAr Penray N/A Wide (l2k) 3pxR 0.3  
HgNe Penray N/A Wide (l2k) 3pxR 0.3  
CuHeAr Hollow Cathode N/A Wide (l2k) 3pxR    
 
Dome High 255 High-Res Blue (hb4k) 3pxC 90  
HgAr Penray N/A High-Res Blue (hb4k) 3pxC 0.3  
HgNe Penray N/A High-Res Blue (hb4k) 3pxC 0.3  
CuHeAr Hollow Cathode N/A High-Res Blue (hb4k) 3pxC    
 
Dome High 255 Visible (v4k) 3pxB,3pxC,3pxR 60, 45, 30  
HgAr Penray N/A Visible (v4k) 3pxB,3pxC,3pxR 0.3, 0.3, 0.3  
HgNe Penray N/A Visible (v4k) 3pxB,3pxC,3pxR 0.3, 0.3, 0.3  
CuheAr Hollow Cathode N/A Visible (v4k) 3pxC    
 
Dome High 150 High-Res Red (hr4k) 3pxB,3pxC,3pxR 60, 50, 40  
HgAr Penray N/A High-Res Red (hr4k) 3pxB,3pxC,3pxR 0.3, 0.3, 0.3  
HgNe Penray N/A High-Res Red (hr4k) 3pxB,3pxC,3pxR 0.3, 0.3, 0.3  
CuHeAr Hollow Cathode N/A High-Res Red (hr4k) 3pxC    
 
KOSMOS at the KPNO Mayall 4-m
Dome High 52 Blue 3pxB, 3pxC, 3pxR 40  
HeNeAr Hollow Cathode N/A Blue 3pxB, 3pxC, 3pxR 120  
Dome High 52 Red 3pxB, 3pxC, 3pxR 7  
HeNeAr Hollow Cathode N/A Red 3pxB, 3pxC, 3pxR 5  

1The intensity settings for the dome flat lights on the Blanco 4-m range from 0 to 255 units. The intensity settings for the dome flat lights on the Mayall 4-m range from 0 to 52 units.

2The wavelength calibration lamps are set at a fixed current and cannot be changed on a dimmer.

Updated on May 6, 2021, 5:23 pm