Abell 21 (Sh2-274, PK205+14.1) Gem - planetary nebula
Date: 19.2.2025
Equipment: ZWO Seestar S50
Exposure: 240x10sec in mosaic mode
Location: Havlíčkův Brod
Processing: GraXpert, Photoshop
Description: The planetary nebula called Medusa is distant circa. 1,500 ly and adjacent to the open cluster NGC 2395 (pictured left), which is 1,670 ly away.