NGC 6888 - Crescent Nebula - H-alpha colored

15x180s, dark, bias, flat

Canon 7D modded - Astrodon Inside

ISO 800

Lens : SkyWatcher StarTravel 102 f4.9 Achromatic Refractor (500mm)

Astronomik Ha filter 12nm

AstroTrac unguided

Stacked in DSS, post-processed in Photoshop

Uncropped image

Original color maintained

 

First try with this achromatic scope, which is probably one of the lowest-end ever.

 

Star trails due to heavy scope on AstroTrac

Done