It was another clear night and two tripods and two telescopes were moved to the back section to view the comet. Each night Comet C/2023 A3 (Tsuchinshan–ATLAS) is a little bit higher in the sky but becomes a bit dimmer. The estimated magnitude of the comet was +4.9. The length of the comet tail also decreases every night. The digital sensor field of view for the first image (Vespera Passengers ) with the comet head near the center is 2.4° x 1.8°. For the second image (Vespera II) I was able to get the comet head closer to the bottom. The diagonal field of view for this sensor is 2.5° x 1.4°.
Comet C/2023 A3 (Tsuchinshan–ATLAS). Composite of 30 images taken with a Vaonis Vespera-Passengers Telescope (200 mm, f/4, 30 x 10 sec).Comet C/2023 A3 (Tsuchinshan–ATLAS). Composite of 30 images taken with a Vaonis Vespera II Telescope (250 mm, f/5, 30 x 10 sec) using a CLS (city light suppression) 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.
View all posts by David Mathre
