Nebulae Lagoon Nebula with AT60ED Image September 11, 2021 admin Leave a comment The Lagoon Nebula on September 11, 2021. 20×180 sec @ Gain 11, Offset 50, QHY183c at -15C, L-eNhance filter, Astro-Tech AT60ED at F/4.8, SharpCap 3.2 Live Stacking in metro-area conditions.