Twelve Years Ago. Late Fall 02:00 to 03:00 AM Sky Star Trail (with stationary anomaly) in New Jersey. (14-Dec-2012)
Silhouettes of Objects Passing in Front of the Sun.
Today, I captured images of a jet with a condensation trail and a bird transiting the sun while looking at the sunspots (we are at or near the solar maximum). I was viewing the sun with a Vespera Classic telescope fitted with a solar filter. The exposure time for solar observations with the Vespera Classic telescope is 250 microseconds (1/4000 sec). During the solar observation, the Vespera Classic appears to take ~51 images per minute.
Silhouette of a jet with a condensation trail transiting the sun with sunspots. Image taken with a Vaonis Vespera Classic Telescope (200 mm, f/4, 1/4000 sec) with a solar filter.Silhouette of a bird passing in front of the sun. Image taken with a Vaonis Vespera Classic Telescope (200 mm, f/4, 1/4000 sec) with a solar filter.
Comet C/2023 A3 (Tsuchinshan–ATLAS)
The comet is getting fainter and the tail much shorter. You may need to look closely, the comet is in the center of the frame. The magnitude is now 10.5. The first image is a composite of 32 images (5 min 20 sec) and the second one is a composite of 128 images (21 min 20 sec). In the second image there is some movement of the comet head.
Comet C/2023 A3 (Tsuchinshan–ATLAS). Composite of 32 10 sec images taken with a Vaonis Vespera-Pro Telescope (250 mm, f/5, 320 sec).Comet C/2023 A3 (Tsuchinshan–ATLAS). Composite of 128 10 sec images taken with a Vaonis Vespera-Pro Telescope (250 mm, f/5, 1280 sec).
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.
View all posts by David Mathre
