sun observations

Positions of the Sun through the year

Monthly Sun Data at Sasteria Crete

Sunspots & Faculae & Wolfnumber R & Becknumber Re’ & Pettis Index SN

All the Sun-observations are made with the Maksutov 150mm F/1800mm.

Magnification 90x field of view 44’ through solar-screen and contrast-filter. From January 2010 all the Sun-observations will be done with the 10” Tal telescope and glas-filter.

Alle observaties werden verricht met de Maksutov 150mm F/1800mm

Vergroting van 90x beeldveld van 44’ voorzien van zonnefolie en contrast filter. Vanaf Januari 2010 zullen alle waarnemingen van de Zon gebeuren met de 25 cm tal met glasfilter.

How big can a sunspot be?

This picture (left) will give you an idea, the Sunspot NOAA 1029 is a member of new Solar Cycle 24. October 29 2009

The sunspot's large dark core is about the size of Earth, while the entire sunspot group stretches about 50,000km from end to end.

Drawing made of the sunspot NOAA 1029 at Sasteria.

Compare the picture from 1 day later and you already will see changes in the penumbrae en the amount of sunspots.

Observation made with the Maksutov 6” f12 and solar glas filter.

The graphics show you the behaviour of our Sun seen through out the year 2009. The data comes only from one observer and serves only as a general study. Its only when we observe with a lot af people that we can be very accurate. So put out your telescope, put on a good solar-filter and observe!

Collect your observations and send them to an astronomy society in your country.

For the scientific data look at http://sidc.oma.be/index.php or at http://www.digilife.be/club/franky.dubois/ for Belgium.

SIDC

0-24

When you look at the graphics, you see immediately that August was spotless the whole month! The month before in July we had a peak for the Becknumber due the big groups between 4 july and 10 July. class groups from D / E / G where the cause for it.

The graphic shows also a increase of activity from April to the end of the year.

In the month January there where only 4 observations and for February there where now observations due the work on the new observatory.

And finely on September after a long period with now sunspots at all we started on the 22 September with the new Sun-cycle 24! The sunspots 1026 and 1027 where bringing at last some activity back on the Sun.

If you want to download the Pdf and Excel files from White light observations, then contact Sasteria for more details.