Crescent Nebula (NGC 6888)

The Crescent Nebula, or NGC 6888 as it is formally known, is a distinctive emission nebula that stretches about 25 lightyears across and is located about 5,000 lightyears away from Earth in the Cygnus constellation. Discovered by William Herschel in 1792, the Crescent Nebula is produced by a type of star known as a Wolf-Rayet.

 

Imaging Telescope: Vixen ED81s f/7.7 

Mount: Skywatcher HEQ5 Synscan Pro (belt mod) 

Camera: QHY 533M 

Filter Wheel: QHY CFW3S-SR 

Guiding camera: ZWO ASI120MM Mini (mono)

Guidescope: SkyWatcher EvoGuide 50ED

Constellation: Cygnus

Date: 10-11 Aug 2024 

Location: Albireo Observatory 2, Ileia, Greece

Sky brightness: B2

Exposure Time: 

L: 50x300 sec (gain: 56.00, offset: 12.00) 0°C bin 1×1 

R: 30x120 sec (gain: 56.00, offset: 12.00) 0°C bin 1×1 

G: 30x120 sec (gain: 56.00, offset: 12.00) 0°C bin 1×1 

B: 30x120 sec (gain: 56.00, offset: 12.00) 0°C bin 1×1 

Ha: 20x900 sec (gain: 56.00, offset: 12.00) 0°C bin 1×1

Acquisition: N.I.N.A v3 

Processing: Pixinsight, Photoshop