NGC6888 - The Crescent Nebula
Sat Jul 12 2025
I’ve imaged this a few times before but usually only for a few hours in total exposure time. I wanted to make sure to pick up more of the faint oxygen here and of course could have gone deeper but I’m pretty happy with the overall result for the time invested. Thanks for looking!
About this object
- Type
- Emission Nebula
- Constellation
- Cygnus (the Swan)
- Apparent magnitude
- 7.4
- Apparent size
- 20.0′ × 10.0′
- Catalogue designations
- NGC 6888
The Crescent Nebula is an emission nebula in the constellation Cygnus (the Swan). It shines at about magnitude 7.4 and spans roughly 20.0′ × 10.0′ on the sky.
Acquisition
- Antlia 3nm Narrowband H-alpha 36 mm: 96 × 3m (4h 48m)
- Antlia 3nm Narrowband Oxygen III 36 mm: 93 × 3m (4h 39m)
- Total integration: 9h 27m
Equipment
- Telescope / Lens: Celestron C8
- Camera: ZWO ASI2600MM Pro
- Mount: Celestron CGEM II
- Filters: Antlia 3nm Narrowband H-alpha 36 mm, Antlia 3nm Narrowband Oxygen III 36 mm
- Guiding scope: SVBony SV106 60mm Guide Scope
- Guiding camera: ZWO ASI174MM Mini
- Accessories: Celestron 0.63X SCT Reducer (94175), ZWO EFW 7 x 36mm
- Software: Pleiades Astrophoto PixInsight
Astrophotography by David Joyce, AstroDavido.