Plots of SOHO Roll Angles

These plots have been generated using the SOHO spacecraft attitude files.* They are less accurate than the data from stars, but give a good overview.

These plots also give an indication of when SOHO was not working (red points on plots). Note: This is a SUBSET of times when LASCO doors are closed, so there are times besides those indicated in red where LASCO or EIT are not operating.

Angle shown is the roll of the image (i.e., to correct, apply -1*angle)

GIF files:
    1996
    1997
    1998
    1999
    2000
    2001

* The SOHO attitude files may be found at ftp://sohoftp.nascom.nasa.gov/pub/data/ancillary/attitude/definitive/SO_AT_DEF_*.FITS

! CAUTION! The aforementioned ftp directory contains hundreds of files !