Spitzer Documentation & Tools
IRS Instrument Handbook

6.6.4             FOVID and FOVNAME

The IRS BCD headers include the keywords “FOVID” and “FOVNAME”, both of which describe the field of view of the observation.  The difference is that FOVID takes on integer values, while FOVNAME is a character string.  The table below provides a translation between these FOVID and FOVNAME.

Table 6.14 Translation between header keyword values for FOVID and FOVNAME.

FOVID

FOVNAME

18

IRS_Red_Peak-Up_FOV_Center

19

IRS_Red_Peak-Up_FOV_Sweet_Spot

22

IRS_Blue_Peak-Up_FOV_Center

23

IRS_Blue_Peak-Up_FOV_Sweet_Spot

26

IRS_Short-Lo_1st_Order_1st_Position

27

IRS_Short-Lo_1st_Order_2nd_Position

28

IRS_Short-Lo_1st_Order_Center_Position

29

IRS_Short-Lo_Module_Center

32

IRS_Short-Lo_2nd_Order_1st_Position

33

IRS_Short-Lo_2nd_Order_2nd_Position

34

IRS_Short-Lo_2nd_Order_Center_Position

38

IRS_Long-Lo_1st_Order_1st_Position

39

IRS_Long-Lo_1st_Order_2nd_Position

40

IRS_Long-Lo_1st_Order_Center_Position

41

IRS_Long-Lo_Module_Center

44

IRS_Long-Lo_2nd_Order_1st_Position

45

IRS_Long-Lo_2nd_Order_2nd_Position

46

IRS_Long-Lo_2nd_Order_Center_Position

50

IRS_Short-Hi_1st_Position

51

IRS_Short-Hi_2nd_Position

52

IRS_Short-Hi_Center_Position

56

IRS_Long-Hi_1st_Position

57

IRS_Long-Hi_2nd_Position

58

IRS_Long-Hi_Center_Position