Solar
The Association of Lunar and Planetary – Solar Section was formed in 1982 at the request of the founder and then Director, Walter Haas. We defined our observational goals then as being the coordination of optical observations of solar morphology. We do not count sunspots but use such statistics from several international sources all of whom do a far better job of it than we could. Our first 40 years have been highly successful with contributions from a number of countries filling our files today. Whatever telescope you have, with proper safe filtration, can make useful contributions to the work of the Section. So join the Solar Section get observing and as you observe you will learn about other instruments, techniques and filters from other more experienced observers.
   Solar Blog
Summary for Carrrington Rotations CR2280 to CR2282 Available
11/1/2024

ALPO Solar Assistant Coordinator Kim Hay has generated a brief summary report for Carrington Rotations 2280 through 2282. It is available at the following  link for your review.


Summary for Carrrington Rotations CR2277 to CR2279 Available
5/10/2024

ALPO Solar Assistant Coordinator Kim Hay has generated a brief summary report for Carrington Rotations 2277 through 2279. It is available at the following  link for your review.


Summary for Carrrington Rotations CR2273 to CR2276 Available
12/12/2023

ALPO Solar Assistant Coordinator Kim Hay has generated a brief summary report for Carrington Rotations 2273 through 2276. It is available at the following  link for your review.


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   Solar News Headlines
Have We Hit Solar Maximum?
3/27/2025

Space.com Logo
The sun's current solar cycle, Solar Cycle 25, has been full of surprises, surpassing predictions with a peak sunspot count of 156.7 in 2024, exceeding earlier forecasts. Scientists debate whether the cycle's solar maximum has already occurred or if another peak awaits later in 2025, as solar cycles can sometimes show a "double peak" pattern. Despite possible signs of decline, experts suggest strong solar activity may persist for a year or more, offering continued opportunities for aurora displays and solar observation.

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Solar Maximum Reached
10/16/2024

NASA LogoIn a conference today NASA, NOAA, and the International Solar Cycle Prediction Panel announced that the Sun is in its solar maximum period where sunspots, flares, and other activity are at their greatest. This period will last approximately a year according to scientists. Such activity can lead to aurora, such as those seen deep into the continental US last week. Scientists will not be able to determine the exact peak of this solar maximum period for many months because it's only identifiable after they've tracked a consistent decline in solar activity after that peak.


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Observation Spotlight
Featured Solar Section Image
image
Observer: Michael Teoh
Equipment: APM 228mm RFR [WL] and Lunt 152mm H-Alpha RFR
Here's and excellent pair of images taken by frequent contributor Michael Teoh from Pulau Pinang in Malaysia. They both display sunspot AR3998 and were taken within a few minutes of each other, showing the active region's appearance in white light and H-Alpha. Both of these images are of sub-arc-second quality, revealing a wealth of detail in both wavelengths.
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