HDR timelapse - partial Lunar eclipse 2023
Taken by Alberto Vacca on October 28, 2023 @
Parma, Emilia-Romagna, Italy
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
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Date Taken: 2024:04:01 22:36:47
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Details:
After a post-processing that required some months, here is the result of my HDR timelapse of the partial lunar eclipse that occurred on 28 October 2023 (this is the youtube link): https://youtu.be/JCreqeE0khc .
My aim was to represent the partial phase of the eclipse as I saw it from a binocular: in fact the human eye has a really wide dynamic range so that the brightest and darker parts of the Moon were visible at the same time during the partial phase of the eclipse.
The video is composed by 433 frames, taken every 24 seconds. The duration of the timelapse, 11 seconds, compared to the real time span of the shots, tells us that the video has been speeded up around 1000x.
Every frame is an HDR union of 6 pictures taken within a wide range of different exposure times, from 1/2000s to 1s. I wrote a Python program to handle the processing of the whole sequence, taking into account the different brightness and color balance of the initial frames because of atmospheric extinction (the Moon was lower above the horizon). This way every frame has been processed in the same way with the same parameters, making it comparable with all other frames in terms of relative brightness.
The time of the shoot is: 2023 October 28, from 17:58 to 20:50 UT.
Location: Parma (Emilia-Romagna, Italy), in my home garden.
Equipment:
- Tamron 100-400mm lens, used at 400mm
- Nikon D750 camera
- iOptron CEM40 equatorial mount
Software:
- APT (Astro Photography Tool) for acquisition
- Python program written by myself for processing
Settings of the cam: f8, iso 400, exposure times 1/2000s, 1/500s, 1/100s, 1/20s, 1/4s, 1s
Photographer's website:
https://www.instagram.com/alberstein08/
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