White Light Full-Disk Observation

1918 - 1998: Photograph observation with 20cm Zeiss Refractor at Mitaka (specification is here)
1938 - 1998: Sunspot drawing observation with 20cm Zeiss Refractor at Mitaka (specification is here)
10cm Refractor at Mitaka since 1998

10cm Refractor: Full-Disk Images (jpg file, 1000x1000 pixels)

2010 2011 2012 2013 2014 2015 2016 2017
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
1997 1998 1999
The image orientation is celestial north at the top and west to the right.
The files are named "srYYYYMMDD.jpg", where 'YYYYMMDD' is the date of observation.

10cm Refractor: Computer-Generated Drawings (postscript file)

2010 2011 2012 2013 2014 2015 2016 2017
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
1997 1998 1999
The files are named "spotYYYYMMDD1.ps", where 'YYYYMMDD' is the date of observation.

10cm Refractor: Region Parameters

2010 2011 2012 2013 2014 2015 2016 2017
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
1997 1998 1999
The files are named "spotYYYYMMDD.txt", where 'YYYYMMDD' is the date of observation.

10cm Refractor: Full-Disk Images (FITS-format data)

2010 2011 2012 2013 2014 2015 2016 2017
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
1997 1998 1999
The files are named "srYYYYMMDD.fts" or "sdYYYYMMDD.fts" (limb-darkening corrected), where 'YYYYMMDD' is the date of observation.