raspberry-longexposure

#!/bin/bash

# --------------------------
# Aurora borealis capture script
# takes $COUNT images, that you can later merge to reduce noise
# --------------------------

#cd "$(dirname "$0")"

# Create a folder with current datetime
FOLDER=$(date +"%Y-%m-%d_%H-%M-%S")
mkdir -p "$FOLDER"
cd $FOLDER

# Number of images
COUNT=5
# Exposure time in microseconds (4s)
SHUTTER=2000000
# Gain (adjust if too dark/bright)
GAIN=8
# AWB gains (manual)
AWBGAINS="1.5,1.5"

# Capture loop
for i in $(seq 1 $COUNT); do
    FILENAME="aurora_$i.jpg"
    echo "Capturing $FILENAME ..."
    rpicam-still \
      -n \
      --shutter $SHUTTER \
      --gain $GAIN \
      --awb custom \
      --awbgains $AWBGAINS \
      --denoise off \
      -q 90 \
      -r \
      -o "$FILENAME"
    sleep 1
done


sleep 1
cp /home/hlorand/image-noise-remover.py .
./image-noise-remover.py . output.jpg

echo "Capture complete. Images saved in $FOLDER"