Sun - David Mathre Photography

Tuesday (17-December-2024) — New Jersey

Fifteen-Years Ago Today. Nakalele Point Blowhole, Maui Hawaii. (17-Dec-2009)

Silhouettes of a Jet Passing in Front of the Sun.

Today, I captured an image of a jet passing in front of the sun while looking at the sunspots (we are at or near the solar maximum). I was viewing the sun with a Vespera Passengers telescope fitted with a solar filter. The exposure time for solar observations with the Vespera Passengers telescope is 300 microseconds (1/3333 sec). The Vespera Passengers takes ~30 solar images per minute. Over an hour that amounts to 0.54 seconds (or 0.015% of the time). I am not sure why the background of the image is blue. Previous observations the background was black and the sun orange. I will be contacting Vaonis support about the strange colors.

Silhouette of a jet transiting the sun with sunspots. Image taken with a Vaonis Vespera Passengers Telescope (200 mm, f/4, 1/3333 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 10.7. 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 of128 10 sec images taken with a Vaonis Vespera-Pro Telescope (250 mm, f/5, 1280 sec).

Saturday (14-December-2024) — New Jersey

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). The Vespera Classic takes ~51 solar images per minute. Over an hour that amounts to 0.765 seconds (or 0.02% of the time).

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.

Thursday (12-December-2024) — New Jersey

Digital Art. Flock of geese transiting the sun. The geese flying in front of the sun are real, the rest is digital art. (12-Dec-2024)

Silhouettes of Jets and Geese Transiting the Sun.

Today, I captured images of a flock of geese and several jets 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 and Vespera Pro automated telescope using solar filters.

Flock of geese 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 jet 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 jet transiting the sun with sunspots. Image taken with a Vaonis Vespera Pro Telescope (250 mm, f/5, 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 10.3. 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.

Friday (06-December-2024) — New Jersey

Nine-Years Ago Today. Frost covered Common Barberry. Hobler Park, New Jersey. (06-Dec-2015).

Jet Silhouettes Transiting the Sun.

In addition to the sunspots (we are at or near the solar maximum) I captured two jets transiting the sun using a Vespera Pro telescope fitted with a solar filter.

Sun with sunspots and the silhouette of a jet. Image taken with a Vaonis Vespera Pro Telescope (250 mm, f/5, 1/4000 sec) with a solar filter.

Comet C/2023 A3 (Tsuchinshan–ATLAS)

The comet is getting fainter and the tail shorter. The magnitude is now 10.0. The first image is a composite of 31 images (5 min 10 sec) and the second one is a composite of 90 images (15 min). In the second image there is some movement of the comet head. Also, the comet is moving into a region of the sky with part of the milky way in the background (many more faint stars).

Comet C/2023 A3 (Tsuchinshan–ATLAS). Composite of 90 10 sec images taken with a Vaonis Vespera-Pro Telescope (250 mm, f/5, 900 sec).

Wednesday (04-December-2024) — New Jersey

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.