Cassiopeia Region | Tom O’Donoghue

Cassiopeia Region - Tom O'Donoghue
Cassiopeia Region – Tom O’Donoghue

This amazing picture of the Cassiopeia region by Tom O’Donoghue is a mosaic consisting of 25 frames totalling 350 hours (!) of exposure, taken over 4 years.

Each LRGB panel has Hα data and some have added O3 where objects in that area emitted in that part of the spectrum.

Atik 11Meg CCD camera
Takahashi FSQ106ED @ 530mm

Cassiopeia-Region-Tom-ODonoghue-Annotated
Cassiopeia-Region-Tom-ODonoghue-Annotated

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