Sun - David Mathre Photography

Monday (23-December-2024) — New Jersey

Sixteen-Years Ago Today. Osprey in flight with a fish. Fort DeSoto Park. (23-Dec-2008, Florida).

Stellina has Returned from a round trip to France.

The Vaonis Stellina automated telescope arrived back today after a trip to France to repair the camera sensor. The instrument was still under warranty so the only cost was a getting shipping fly case so the telescope would be protected while in transit. I dropped the package off at a local UPS store on the 11th and it arrived back today. The sun was shining so I set it up on a tripod and tested it with a solar observation. Clouds are forecasted for tonight, so I will need to wait to check it out at night. Hopefully, the comet will still be visible.

Sun with sunspots. Image taken with a Stellina Telescope (400 mm, f/5)

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. One of the jets had a trailing condensation trail that continued in front of the sun for 12 additional images (~15 seconds)

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.

Sun with sunspots and the silhouette of a jet. Image taken with a Vaonis Vespera Pro Telescope (250 mm, f/5, 1/714 sec) with a solar filter.

Jet with condensation trail passing in front of the sun. Images captured with a Vespera Classic telescope fitted with a solar filter. Individual images in the slideshow are available in my PhotoShelter Gallery

Sunday (22-December-2024) — New Jersey

Ten-Years Ago Today. Poppies and Lupines at Christ Church Cathedral, Stanley. (22-Dec-2014, Falkland Islands)

Silhouettes of an Airplane and Jets Passing in Front of the Sun.

Today, I captured images of an airplane and several jets transiting the sun while looking at the sunspots (we are at or near the solar maximum). I was observing the sun with a Vespera Classic and a Vespera Pro telescope each fitted with a solar filter. The exposure time for solar observations with the Vespera Classic telescope is 250 microseconds (1/4000 sec) and with the Vespera Pro telescope is 1400 microseconds (1/714 sec). The Vespera Classic takes 51-52 solar images per minute and the Vespera Pro takes 8-9 solar images per minute.

Images taken with a Vespera Classic or Vespera-Pro telescope. Individual images in the slideshow are available in my PhotoShelter Gallery

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 10.9. The slideshow displays the 32nd, 64th and 96th stacked composite image (5 min 20 sec, 10 min 40 sec, 16 min). In the last two images there is some movement of the comet head.

Comet C/2023 A3 (Tsuchinshan–ATLAS). Images taken with a Vespera-Pro Telescope (250 mm, f/5, composites of 10 sec exposures). Individual images in the slideshow are available in my PhotoShelter Gallery

Thursday (19-December-2024) — New Jersey

Ten-Years Ago Today. Ocean Tramp anchored at the harbor in Ushuaia, Argentina. (19-Dec-2014)

Flock of Geese Passing the Sun.

Today, I captured an image of a flock of geese transiting the sun while looking at the sunspots (we are at or near the solar maximum). I assume the geese are flying south before the snow predicted for tomorrow. I was viewing the sun with a Vespera Classic automated telescope using a solar filter. The exposure time for solar observations with the Vespera Classic telescope is 250 microseconds (1/4000 sec)

Wednesday (18-December-2024) — New Jersey

Four-Years Ago Today. American Crow feeding on a cold day. (18-Dec-2020, New Jersey).

Silhouettes of Jets Passing in Front of the Sun.

Today, I captured images of jets transiting the sun while looking at the sunspots (we are at or near the solar maximum). I was observing the sun with a Vespera Classic and a Vespera Pro telescope fitted with a solar filter. The exposure time for solar observations with the Vespera Classic telescope is 250 microseconds (1/4000 sec) and with the Vespera Pro telescope is 1400 microseconds (1/714 sec). The Vespera Classic takes 51-52 solar images per minute and the Vespera Pro takes 8-9 solar images per minute.

The same jet appears in the first two Vespera Classic images showing the distance it traveled in ~1.2 seconds. The third image from the Vespera Pro shows a jet with condensation trails. Even though the exposure time is longer (1400 vs 250 microseconds) the image of the jet is still relatively sharp.

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.