Six-Years Ago Today. Northern Red Cardinal. (04-Dec-2018, New Jersey).
Sunspot Activity
The solar disk was observed with a Vespera Pro telescope (250 mm, f/5, 1400 microseconds) using a Solar filter. The sun is near the solar maximum period of the 11-year solar sunspot cycle. The image is cropped to 1204 x 1204 pixels with the apparent diameter of the sun a little less than 0.54°. Processing the image using Topaz AI (noise reduction or sharpening) or AutoStakkert4 (image stacking) did not improve the image.
Sun with sunspots. Image taken with a Vespera Pro Telescope (250 mm, f/5, 1400 microseconds exposure) and Solar Filter.
Author: David Mathre
I am a scientist by training (Eckerd College, BSc; Caltech, Ph.D.). I worked for 27 years as a Chemist in the Pharmaceutical Industry developing processes to manufacture medicines for human and animal health. I now spend my time as a photographer and world traveler. My interests include the natural world, wildlife, landscapes, sky, and seascapes, travel, and astrophotography. I look for unique ways of viewing the world and presenting my images. I have traveled to over 55 countries in six continents, often on Semester at Sea voyages. While at home in New Jersey, I spend time on home renovation and expansion of a wildflower garden/meadow.
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