C11 Bubble Nebula


Mark Griffith

Swindon, Wiltshire. UK

GSO 8″ Richey-Chretien Optical tube, Skywatcher NEQ6 pro mount,Atik 383L+ camera, motorised filter wheel and Astronomik HARGB filters.

Back to imaging my favourite emission nebula.

Trying out my latest internet impulse buy. My new GSO Richey-Chretien 8 inch carbon fiber optical tube.

Works well with my NEQ6 mount.

Stars showed no tracking errors even with twenty minute sub frames of hygrogen alpha data.

Collimation spot on using a defocussed star test. Also used a bartihov mask for perfect focus.

260 minutes of data collected over two nights.