November 23, 2024

Earthshine – 9:00pm 4/3/2022 EDT

Earthshine – 9:00pm 4/3/2022 EDT

Telescope: Unitron 155c 4” f/15

Camera: Canon EOS Ra, Interval Timer (no computer)

Filter: 2” GSO IR Cut Filter

Exposure: 16x2sec, ISO 1600, saved as RAW

Seeing: Fair, 3/5

White Balance: Nebulosity Automatic

Software: Registax, Nebulosity, Photoshop

After taking a set of images of the crescent moon I decided to try and capture the beautiful Earthshine. The source images were gorgeous without a hint of color fringing. I had to remove a ghost image that indicates that the objective in this old Unitron does not have AR coatings. Processing also brought up a little bit of color fringing, but it is still very limited. Note the little star trail just above the moon that shows how far the moon moved during the time the source images were being taken.