Caldwell objects

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Caldwell 29 / NGC 5005. 90 minutes data Seestar S50 processed in Pixinsight.

Caldwell 3 / NGC 4236. 120 minutes data Seestar S50 processed in Pixinsight.

Caldwell 21 / NGC 4449. 4 hours data William Optics Zenithstar 73 processed in Pixinsight.

Robert Elson