Sunspot Observation

Kwasan and Hida Observatories, Graduate School of Schience, Kyoto University

SUNSPOT OBSERVATION

We have been taking sunspot sketches since August 2004.
Our data is reported to Oriental Astronomical Association (OAA) every month.
We also offer oppourtunity of sunspot observation and sketching to visitors.

This page provides the daily reports of sunspot observation as well as images of our drawings.

Method	Projection
Instrument	3 Aug 2004 - 24 Jan 2005 Nikon 10cm Refractor (d=100mm,f=1200mm,F=12)
	28 Jan 2005 - now 11.5cm Refractor (d=115mm,f=1875mm,F=15)
	Vixen 150 mm projection screen, HM-25mm eyepiece

Sunspot Observation Report					[Archive]					[Explanation]
Year	Month
2012	1	2	3	4	5	6	7	8	9	10	11	12
2011	1	2	3	4	5	6	7	8	9	10	11	12
2010	1	2	3	4	5	6	7	8	9	10	11	12
2009	1	2	3	4	5	6	7	8	9	10	11	12
2008	1	2	3	4	5	6	7	8	9	10	11	12
2007	1	2	3	4	5	6	7	8	9	10	11	12
2006	1	2	3	4	5	6	7	8	9	10	11	12
2005	1	2	3	4	5	6	7	8	9	10	11	12
2004	1	2	3	4	5	6	7	8	9	10	11	12
Sunspot sketch image					[Archive]
Year	Month
2012	1	2	3	4	5	6	7	8	9	10	11	12
2011	1	2	3	4	5	6	7	8	9	10	11	12
2010	1	2	3	4	5	6	7	8	9	10	11	12
2009	1	2	3	4	5	6	7	8	9	10	11	12
2008	1	2	3	4	5	6	7	8	9	10	11	12
2007	1	2	3	4	5	6	7	8	9	10	11	12
2006	1	2	3	4	5	6	7	8	9	10	11	12
2005	1	2	3	4	5	6	7	8	9	10	11	12
2004	1	2	3	4	5	6	7	8	9	10	11	12

Sunspot relative numbers