README web version of /home/usg/OPS/MTS/readme_xml/readme_80501800

Principal Investigator Email Address

• nardetto@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 3h

General Description

• This DDT proposal is connected to the 079.A-0350(B) AMBER program. 
  4 OBs correspond to four different pulsation phases of the Cepheid l Car : 0.00,
   0.38, 0.78, 0.89 (P=35.55 days). 
  1 OB corresponds to the star HD78004 (which is the interferometric calibrator used
   in the AMBER program). 
  For these 5 OBs we ask for high-resolution CRIRES observations (R=100000, slit width=0.2"),
   around the Brackett Gamma line with two wavelength settings (ref1=2150.0nm and ref2=2205.0nm).
   No OA is used. Our star are bright : K[l Car]=1.1 and K[HD78004]=1.3. 
  In order to correct our spectra from telluric lines we need complementary calibration
   observations of the star HIP48774 found in the CRIRES catalogue (K=3.7) : 4 OBs
   are necessary at the same pulsation phases of l Car, and 1 OB for HD78004. These
   5 additional OBs should be observed at the same wavelength settings (ref1=2150.0nm
   and ref2=2199.1nm).

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• There are no critical condition constraints

Time-Critical Aspects

• We want to observe lcar at 4 different pulsation phases : 0.00, 0.38,
   0.78, and 0.89. Given the ephemeris (To=2452290.4158 and P=35.551341) and taking
   into accounbt the observability of l Car during period P80, it corresponds to specific
   dates : 
  -phase=0.00 : [22-25]dec, [27-30]jan, [03-06]mar (corresponding to OBs named phase1)
  -phase=0.38 : [02-10]jan, [07-15]feb, [13-21]mar (corresponding to OBs named phase2)
  -phase=0.78 : [14-17]dec, [19-22]jan, [24,27]feb (corresponding to OBs named phase4)
  -phase=0.89 : [18-21]dec, [23-26]jan, [28,02]mar (corresponding to OBs named phase3)
  For these OBs (named phase1, phase2, phase3 and phase4) we need one measurement
   within one of the interval indicated. 
  
  For OB corresponding to HD78004 (SCI_HD78004 and CAL_HIP48774) there is no time
   constraints.

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• To correct our science spectra from telluric lines we found the following
   star on the CRIRES web page:
  -HIP048774
  -S/N required is 250 (For l Car and HD 78004 we need S/N=500)
  -spectral type = B5Ib
  -the wavelength settings should be the same as for sciences stars : ref1=2150.0nm
   and ref2=2199.1nm

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Do the README file and the instrument comments of the telluric stars
 OBs include the required S/N/pixel of the spectrum of the telluric star, its spectral
 type and allowed spectral range?

• YES

Do any OBs include wavelength or flatfield calibrations?

• NO

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If the slit viewer guide star is different from the target, are the RA
 and DEC offsets accurate to within 0.05 arcsec and do they take into account the
 relative proper motion between the two objects?

• N/A

If you have preferences which OBs should be executed first for objects
 at similar RA, did you make use of the User Priority field in the OBs?

• N/A