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SolarHam Farside Tracker
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Data is valid for March 13, 2015

NOTICE: Update, 20 March 2015: The IMPACT, PLASTIC, and SECCHI instruments on Ahead have now been turned off for superior solar conjunction. This latest images service is therefore suspended until the instruments are turned back on again in July 2015 (or sooner if communication is restored with the Behind spacecraft). Earlier images are available through the daily browse pages.

However, for several days before instrument turn-off, the effects of radio scintillation from the much denser solar corona that the signal from STEREO Ahead had to pass through significantly affected the quality of the SECCHI images, starting around 14 March 2015. Very few of the SECCHI images from that period made it through the automated processing software that generates the web pages.

Because new imagery via STEREO Ahead is no longer available, the Farside Tracker page will be suspended for the time being. I will work on a new idea to track sunspots on the farside of the sun and will look to have it online in May 2015.



Farside East

2290
3
2292
6
New 1
5.5


Earth Side

2297
2298
2299
2300
2301


Farside West

2293
8
New 2
9

Guide to the Data Above:

A group appearing in a green box indicates that the active region had at least one visible sunspot as it rotated onto the west limb.

A group appearing in a grey box indicates that the active region was spotless (plage) before rotating onto the west limb.

Based on the Carrington Rotation, the number appearing in the red box is the estimated amount of days before the active region returns into view off the east limb.

Regions appearing in a purple box indicate the presence of a potentially new sunspot.

Click HERE for the latest STEREO Beacon Data (Solar Wind, Protons, Electrons).

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Latest Images

STEREO Behind

STEREO Ahead

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STEREO Behind COR2

STEREO Ahead COR2

Imagery by STEREO