Reply To: Issues using BAA Photometry Spreadsheet to calculate based on AIJ data file

Can someone advise what I am doing wrong – there are some NaN in some of the columns to the left, such as JD_SOBS,HJD_UTC,BJD_TDB,ALT_OBJ,RAOBJ2K
,DECOBJ2K

I think my data looks quite sound apart from this, do you agree ?

What does this mean and can I get this data from my original FITS files?

I used ASTAP for science – plate solve and align.
I then ran 8 files in AIJ (used CCD DP tool).

Thanks.
Kwong