Horsehead Nebula and Orion Nebula
Stack of 25 shots at 200mm focal length and F5.6
10 x 120s RGB @ 1000ISO
15 x 180s H-alpha @ 4000ISO.
D810A + Sigma 120-300mm F2.8 + NEQ6
Shooting conditions were dry and dusty on the ground, very clear dark skies, a bit of wind and mild to no seeing.
I replaced the red channel from the RGB images with the H-alpha, but still can't figure out how to trick Nebulosity3 into adding the H-alpha to the RGB ...
I have asked for a free PixInsight trial and will try this image again.
The stars near the edge of the frame look elongated because of how the lens displays problems when shooting through the IR645 filter at F5.6 ... something like F7.1 would be better, but I'd loose so much light that for an unguided setup like this it becomes really problematic !
Horsehead Nebula and Orion Nebula
Stack of 25 shots at 200mm focal length and F5.6
10 x 120s RGB @ 1000ISO
15 x 180s H-alpha @ 4000ISO.
D810A + Sigma 120-300mm F2.8 + NEQ6
Shooting conditions were dry and dusty on the ground, very clear dark skies, a bit of wind and mild to no seeing.
I replaced the red channel from the RGB images with the H-alpha, but still can't figure out how to trick Nebulosity3 into adding the H-alpha to the RGB ...
I have asked for a free PixInsight trial and will try this image again.
The stars near the edge of the frame look elongated because of how the lens displays problems when shooting through the IR645 filter at F5.6 ... something like F7.1 would be better, but I'd loose so much light that for an unguided setup like this it becomes really problematic !