PIN G077 .5-01.71 The Soap Bubble Nebula, NGC6888 The Crescent Nebula and NGC7026 the Butterfly Nebula.
I took this image about 2 hours before dawn arrived. The sky conditions were very clear and dark with stars visible down to magnitude 5.2.
I was using a 135mm lens with narrowband filter attached to the front piggybaced on my ten inch reflector mounted on a Vixen Atlux mount.
I captured two minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of noise and vignetting in the final image. The total exposure time was 45 minutes using a H Alpha filter, 30 minutes using an O111 filter, 25 minutes using a S11 filter and 4 minutes using a blue filter.
RGB
Hubble Palette
Hubble Palette + RGB
