Sunspots are relatively cool magnetic storms that almost constantly tranverse the sun's face. Just use your telescope as a solar projector. Sunlight passing through a lens projects an image into the eyepiece and onto a screen, just like a slide or movie. Change the size of the sun's image by moving the screen closer or farther from the eyepiece, then use the focusing knob to clarify the image. A smooth, white surface works best for the projection screen.
Any irregularities degrade image quality.
Avoid a washed-out image by positioning the screen in shadow rather than direct sunlight. Newtonian reflectors offer viewers an advantage because the eyepiece protrudes from one side of the instrument, easing image adjustment. Observers using refractors or Cassegrain scopes will achieve the best results with a star diagonal, which also projects the image to the side of the scope. In order to use binoculars for projecting an image, cut out a cardboard light block and attach it securely over the outside of the lens barrels. Prevent overlapping image projection by capping one side of the binoculars.