Astrophotography

Astrophotography

I recently moved into the world of digital photography when I acquired two Nikon D750 DSLR cameras. From time to time, I will post results here.


Three close-ups of the Moon on April 25, 2018, at 10:24 PM MDT as seen from Calgary. All images are 1/500 sec. exposures at ISO 800 with my Nikon D750 and the Meade 8" f/10 LX200GPS Schmidt-Cassegrain telescope.

The left photograph is a single exposure, while the middle photograph is a stack of 12 images, cropped and aligned with PIPP, and stacked with RegiStax 6. Note the increase in resolution in the stacked photograph.

The right photograph is the result of RegiStax 6 applying a Denoise setting of 0.25 and a Sharpen setting of 0.140, with Linked Wavelets, to the middle photograph. There is better contrast in the final photograph, while retaining detail along the terminator (upper-left corner).

The Moon on April 25, 2018, at 10:24 PM MDT as seen from Calgary. This is a 1/500 sec. exposure at ISO 800, my first photograph with my Nikon D750 and the Meade 8" f/10 LX200GPS Schmidt-Cassegrain telescope.

This is a stack of 12 images, cropped and aligned with PIPP, then stacked and processed (Denoise setting of 0.25 and Sharpen setting of 0.140, with Linked Wavelets) with RegiStax 6.

The Moon on April 23, 2018, at 10:26 PM MDT as seen from Calgary. This is a 1/250 sec. exposure at ISO 400 with the Meade 4" f/10 telescope. For this image, I did a collimation of the telescope's optics, and for the first time shot the Nikon D750 with the mirror in the lock-up position to minimize vibration.

The Moon on April 21, 2018, at 10:07 PM MDT as seen from Calgary. A 1/125 sec. exposure with a Nikon D750 at ISO 400 and a Meade 4" f/10 telescope.

The Moon and Venus in conjunction on the evening of April 17, 2018 at 9:49 PM MDT, as seen from Calgary. This is a 1/2 sec. exposure at f/1.8 with a Nikon D750 and AF-S Nikkor 35mm lens at ISO 1600.

The star directly below the Moon is 5 Tauri, with an apparent magnitude of 4.14.

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The Moon and Venus in conjunction on the evening of April 17, 2018 at 9:45 PM MDT, as seen from Calgary. This is a 1/8 sec. exposure at f/1.8 with a Nikon D750 and Sigma 135mm DG lens at ISO 1600.

The star directly below the Moon is 5 Tauri, with an apparent magnitude of 4.14.

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A composite picture of the passage of the International Space Station over Calgary on February 9, 2018. One-second exposures were taken every two seconds. A Nikon D750 with a Sigma Art 14 mm f/1.8 DG HSM lens was used for this wide-angle shot.

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A composite picture of the passage of the International Space Station over Calgary on December 8, 2017. 1/13-second exposures were taken every two seconds. A Nikon D750 with a Sigma Art 14mm f/1.8 DG HSM lens was used for this wide-angle shot.

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An animated GIF of the passage of the International Space Station over Calgary on November 30, 2017. Two-second exposures were taken every four seconds. A Nikon D750 with a Sigma Art 14mm f/1.8 DG HSM lens was used for this wide-angle series.

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A composite picture of the passage of the International Space Station over Calgary on November 30, 2017. Two-second exposures were taken every four seconds. A Nikon D750 with a Sigma Art 14mm f/1.8 DG HSM lens was used for this wide-angle shot.

Click here for an uncompressed version.

A composite picture of the passage of the International Space Station over Calgary on October 3, 2017. One-second exposures were taken every two seconds. Notice how the object slows down as it moves further to the east and away from the viewing site. The last few streaks turn red as the ISS moves into the Earth's shadow and disappears.

The Moon on October 3, 2017, taken with the Meade 4" f/10 Schmidt-Cassegrain telescope. Photoshop CC was used to adjust the contrast and brightness.

A composite picture of the rising Moon with a regular lens, from Calgary on October 3, 2017.

The Moon on October 2, 2017, at 10:22 PM MDT, taken with the Meade 4" f/10 Schmidt-Cassegrain telescope.

A composite picture of the rising Moon with a regular lens and through a telescope, from Calgary on October 1, 2017.

The Moon on September 27-29, 2017, from Calgary.

Pictures of the rising Moon were taken every three minutes and combined in Photoshop CC with a landscape photograph taken before moonrise. This montage was acquired near Ardrossan, Alberta, on September 7, 2017, nearly two days after Full Moon.

Note that due to refraction, the Moon was compressed vertically as it rose compared to its appearance later in the evening.

One day after the Full Moon, moonrise near Ardrossan, Alberta, on September 6, 2017. Pictures taken five minutes apart were combined in Photoshop CC.

Pictures of the Full Moon were taken every five minutes and combined in Photoshop CC with a landscape photograph taken at moonrise. This montage was acquired at Calgary, Alberta, on September 5, 2017.

The Sun on September 7, 2017. Notice how the sunspots have moved compared to the image two days earlier, due to the Sun's rotation.

The Sun on September 5, 2017. A solar filter was used with a Meade 4" f/10 Schmidt-Cassegrain telescope. Photoshop CC turned the original grey image into a pleasing yellow depiction.

The Moon on June 5, 2017, taken with the Meade 4" f/10 Schmidt-Cassegrain telescope. Photoshop CC was used to adjust the contrast and brightness.

The Moon on May 29, 2017, taken with the Meade 4" f/10 Schmidt-Cassegrain telescope. This photograph was acquired in JPEG format, which lacks the dynamic range of a NEF (RAW) image.