NGC 457 The Owl Cluster in the constellation of Cassiopeia is 7900 light years away and around 20 million years old .it was discovered by William Herschel in 1787.

Sometimes called the ET cluster.

Imaged with Seestar S50 eq mode in Delabole Cornwall.

29 minutes of 20 second images

Processed in Siril and photoshop cs4.