SPC-OREx Naming Convention

Description

This provides more information about the naming conventions used in SPC-OREx.

• INSTRUME keyword defines which camera system.

• MTR_POS defines either filter position (MapCam, SamCam) or focal distance (PolyCam).

More detail about FITS Keywords

Level 0 Images

Character Position 1

1st character is based on Camera:

• MapCam	M
  PolyCam	P
  SamCam	S
  NavCam	N
  TAGCam	T

Character Positions 2-10

ET in seconds

Character Position 11

Always 'F'

Character Position 12

• MapCam - based upon the filter wheel position (CAMERAID = 1)

  • Filt Pos	char
    0	0
    720	0
    630	1
    540	2
    450	3
    360	4
    270	5
    180	6
    90	7
    30	7

• SamCam - based upon the filter wheel position (CAMERAID = 2)

  • Filter position is defined with variable NQ and stored in make_sumfiles.in

    Filt Pos	char
    0	0
    720	0
    600	1
    480	2
    360	3
    240	4
    120	5

• PolyCam - (CAMERAID = 3)

  • What it really is:

            Find the index (I) that is closest to motor position
            Then
               K=93-I
    
            IF(K.LT.0) K=93-K
            I=K/10
    
           Position 11 => CHAR(65+I)   # 65 is an upper case 'A'
           Position 12 =>  K - 10*I     # (goes from 0 to 9)

  • J4 and up are "super focus" positions. A0 to J2 are nominal positions.

    Index	Motor Pos	11&12 Char
    1	> 630	J2
    ...
    93	> 17190	A0
    94	> 17371	J4
    ...
    116	> 21510	L6

    • Here is the source from PROCESS_FITS.f:

         IF(NC.EQ.3) THEN
            NQ=FLT
            K=0
            DO I=116,0,-1
              IF(NQ.LE.STEP(I+1)) K=93-I
            ENDDO
            IF(K.LT.0) K=93-K
            I=K/10
            K=K-10*I
            PICNM(11:11)=CHAR(65+I)
            FLT=K
          ENDIF
    ...
          WRITE(PICNM(12:12),FMT='(I1)') FLT

  • NavCam (CAMERAID = 4)

    • FLT = 0
  • NFTCam (CAMERAID =5)
    • FLT = 0

Level 1 Images

• Everything is the same except for Character Position 11

• PolyCam

  • PICNM(11:11)=CHAR(ICHAR(PICNM(11:11))+13)

• MapCam, NavCam, etc.

  • G

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