Barnard 104 is a dark nebula in the constellation Scutum , just north of the star Beta Scuti. It is commonly called the Fishhook Nebula, the Checkmark Nebula, and the "L" Nebula. Dark nebulae – or absorption nebulae – are clouds of gas and dust in space dense enough to obscure and block light from background stars. These vast clouds are mostly composed of molecular hydrogen. Often, they are locations where material is coalescing to form new stars.
Imaging Telescope: Vixen ED81s f/7.7
Mount: Skywatcher HEQ5 Synscan Pro (belt mod)
Camera: QHY 533M
Filter Wheel: QHY CFW3S-SR
Filters: L
Guiding camera: ZWO ASI120MM Mini (mono)
Guidescope: SkyWatcher EvoGuide 50ED
Constellation: Scutum
Date: 13 July 2024
Location: Korinthos - Greece - Albireo Observatory 1
Sky brightness: B6
Exposure Time:
L: 20x120 sec (gain: 56.00, offset: 12.00) 0°C bin 1×1
Acquisition: N.I.N.A v3
Processing: Pixinsight, Photoshop
