NGC7000 - Gulf of Mexico Ha/O3

[shaunster]

This is my first colour image since last year.. so I thought id post it up

Its 19x 600s Ha / 9x600s O3

WO zenithstar 70 (old style) on HEQ5, Atik 314l+, 1,25" baader filters

The O3 data was poor and added some noise to the image but I quite liked the outcome and with these endless cloudy night you have to make use of any breaks..

[Dave Smith]

Very nice. How did you combine the Ha and OIII? Red=Ha Green=OIII Blue=OIII or something else?

Dave

[Jessun]

Great image, I really like it! I think the noise is still under control.

[mgirdwood]

Reaaly nice, and thanks as it lets me see all the cloud detail i am missing in my attempt.

i realy must save my pennies for that dedicated CCD

[badgers]

That is simply beautiful, almost like sand blowing off a celestial sand dune.

Lovely processing.

How do you decide on your sub lengths shaunster ? I'm trying to get to grips with how people decide on sub lengths for LRGB and narrowband images.

[Grinde]

Wow! That's top quality stuff, fantastic! I'd expect stuff like this coming from a rig costing 5 times as much, respect!

[Gina]

Very nice

[shaunster]

Thanks everyone

It was mapped Ha = R / O3 = G / Ha + O3 = blue (Ha was layered onto O3, opacity set to 30%, blend mode lighten.) Its not an exact thing, I just play around until I get a look I like. I do not like strong reds so I tend to tone it down a little.

Sub length depends on how bright the target is really, I dont go less then 600second for narrowband stuff though.

Forgot to say I was using a reducer so it was shot at F4.8.

[RikM]

That's a really nice image. The range of tones / contrast in the wall section is great.