The Clear Skies Observing Guides for Cloudy Nights' Monthly Challenge Objects for December 2024:
https://clearskies.eu/csog/downloads/cnmco2024#december
- Open cluster Collinder 69 - the "Lambda Orionis Cluster" & reflection nebula Cederblad 54 - the "Lambda Orionis Nebula" in Orion
- Galaxy pair NGC2207 & IC2163 (Vorontsov-Vel'yaminov 1155) - the "Cosmic Owl" in Canis Major
- Reflection nebula(e) Herbig 1 in Cassiopeia
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