This small reflection nebula, NGC 6820, is associated with the very young open cluster NGC 6823 (lower centre). Stars are still forming in the "pillars" of dust and gas. This photo is via an Ha filter.
Scope: ES127ED
Camera: ZWO ASI183MM Pro
Filter: Optolong Ha 7nM
Exposure: 1 hr 45 min (21x300sec) at f/5.5, June 11 & 12, 2019
Processed in PixInsight