Leif partners with schools to provide payment solutions and aligned financing that help students unlock their future.

Our new ISA program reduces the up-front, out-of-pocket cost of college, so that you can focus on what really matters: your education. We are committed to your future, and with an ISA, you’ll only pay …

The post-1720 11-year sunspotnumber cycleshad relatively small amplitudesat the beginningof the 19th and of the 20th centuries, and these small amplitude cycleshave been widely interpreted as being …

The measured FWHM is 2.0 arcsec, which agrees plainly with this limitation. In future attempts I should try to get a higher magnification on the webcam so that the actual resolution can be measured. …

Alternatively, you can send payment (credit card OK) to "[email protected]" using Paypal Paypal now accepts international payments. The password is valid for all chapters. Because of the prepayment, I'll …

In principle [and with future refinement of the data acquisition] we should be able to determine polar field reversals using 10Be. The data is not quite good enough yet. Leif, 7/26/2012 Steinhilber et al. 2012

L. Svalgaard 3 HEPL, Stanford University, Cypress Hall C3, 466 Via Ortega, Stanford, CA 94305, USA 4 e-mail: [email protected] 5 Received November 4, 2013 Accepted Jxxxxxx dd, 2014 6

Conditions: aquired in Barraba, a small town in New South Wales, Australia; no moon, passing haze and clouds Setup: Borg 100ED F6.4, DF-2 focusser, CFW-8, L (IR reject)+R+G+B filters, ST10XE, …

Finally, in the 21st century the titanic four-meter-diameter solar telescope DKIST is nearing completion and will enable new observation of solar magnetism at the very finest scales. Leif Svalgaard, …

Building a Sunspot Group Number Backbone Series Leif Svalgaard Stanford University 3rd SSN Workshop, Tucson, Jan. 2013 Why a Backbone? And What is it?