The 90-second movie presents two time-lapse sequences I shot of the 2022 Geminid meteor shower, taken from southern Alberta on December 14 on a cool, frosty night.
The two sequences are:
500+ frames on a static tripod - with a Canon R6 at ISO 1600 and Canon RF15-35mm lens at f/2.8, for 30 seconds each.
500+ frames on a tracking mount - with a Canon R5 at ISO 800 and Canon RF28-70mm lens at f/2.0, for 30 seconds each.
Each sequence is rendered twice:
With the frames assembled at 30 frames per second with no frame blending
With the frames assembled at 30 frames per second with a 6-frame blend, so successive frames are stacked in a Lighten mode to create short star trails, and making the brief meteors last a little longer on screen.
However, the most prominent feature of the clips are the aircraft departing and arriving at YYC Calgary some 100 km to my west.
By comparison, the meteors are very brief streaks. The last clip points out two Geminids that were the brightest and left lasting ionization “smoke” trails.
The waning last quarter Moon rises at the end, brightening the sky.
Each version ends with a still image created by stacking and aligning the frames from the sets that contained the meteors.
What you will also see in the movies are slower moving streaks that are satellites. Particularly unusual are the parallel streaks at the end of the last clip. I believe these are geostationary satellites (they are in the right location in Orion), but why they would appear so bright in December, well away from their usual equinox flare season is strange.
In the tracked sequences you will also see bands of red airglow moving from east to west.
Processing was with Adobe Camera Raw, LRTimelapse and TimeLapse DeFlicker (I used the latter to render out the blended sequences). he 90-second movie presents two time-lapse sequences I shot of the 2022 Geminid meteor shower, taken from southern Alberta on December 14 on a cool, frosty night.
The two sequences are:
500+ frames on a static tripod - with a Canon R6 at ISO 1600 and Canon RF15-35mm lens at f/2.8, for 30 seconds each.
500+ frames on a tracking mount - with a Canon R5 at ISO 800 and Canon RF28-70mm lens at f/2.0, for 30 seconds each.
Each sequence is rendered twice:
With the frames assembled at 30 frames per second with no frame blending
With the frames assembled at 30 frames per second with a 6-frame blend, so successive frames are stacked in a Lighten mode to create short star trails, and making the brief meteors last a little longer on screen.
However, the most prominent feature of the clips are the aircraft departing and arriving at YYC Calgary some 100 km to my west.
By comparison, the meteors are very brief streaks. The last clip points out two Geminids that were the brightest and left lasting ionization “smoke” trails.
The waning last quarter Moon rises at the end, brightening the sky.
Each version ends with a still image created by stacking and aligning the frames from the sets that contained the meteors.
What you will also see in the movies are slower moving streaks that are satellites. Particularly unusual are the parallel streaks at the end of the last clip. I believe these are geostationary satellites (they are in the right location in Orion), but why they would appear so bright in December, well away from their usual equinox flare season is strange.
In the tracked sequences you will also see bands of red airglow moving from east to west.
Processing was with Adobe Camera Raw, LRTimelapse and TimeLapse DeFlicker (I used the latter to render out the blended sequences).
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