M42 HaO111S11LRGB slight repro

[gregbradley]

I have data for every filter.

I made a composite of them all. They all have their bit great or small to add.

Scopes here are Tak BRC250 (LRGB) and TEC180 (narrowband)

http://www.pbase.com/image/122489237

Greg.

[bokglob (Darrell)]

Another stunner Greg Good to see your on a roll with some truely outstanding images lately.

[OzRob (Rob)]

Great image but out of interest what is the reasoning to adding the narrowband data if it is already contributing to the LRGB data (well L, R and G really)?

[telecasterguru (Frank)]

Greg,

Great image. Well rendered.

Frank

[plmilligan1968 (Paul)]

Wow, that is extremely detailed, one of the very best M42 images around. Very nice indeed, great job!!

Paul M..

[strongmanmike (Michael)]

I know your processing skills are better than that . You don't have much data really so that wouldn't help for the outer regions I guess but the core looks pretty grainy and fuzzy.

Why do the stars have double spikes by the way?

Comon give us y're best mate

[gregbradley]

Originally Posted by bokglob

Another stunner Greg Good to see your on a roll with some truely outstanding images lately.

Thanks for that.

Great image. Well rendered.

Frank[/QUOTE]

Thanks Frank

Originally Posted by plmilligan1968

Wow, that is extremely detailed, one of the very best M42 images around. Very nice indeed, great job!!

Paul M..

Thanks Paul.

Originally Posted by strongmanmike

I know your processing skills are better than that . You don't have much data really so that wouldn't help for the outer regions I guess but the core looks pretty grainy and fuzzy.

Why do the stars have double spikes by the way?

Comon give us y're best mate

LRGB was from an earlier BRC image. The double diffraction spikes (which I don't mind - patent pending hehe) never appeared again in other images. Some said it was out of collimation but I checked that later on with a Tak collimation scope and it was spot on. Only thing I can think of was the brightness of the stars may have caused some sort of reflection off the corrector?

I fixed the grain, yes that was the original BRC image and it was
oversharpened. I'd like to add more data whilst M42 is still around if I get a chance. I thought I had more LRGB data from the TEC180.

Originally Posted by kinetic

Tough crowd....

Its all good.

[multiweb (Marc)]

Outer neb looks very good but I think you're inner core is cooked and noisy. Your NB previous core had to be the best I've seen. Very intricate details even if the colors weren't your standard M42 I still think it's the best trap area I've seen.

[gregbradley]

Yeah, perhaps I can substitute that core for the one I already had.

I'll give it a go.

Cheers,

Greg.

Originally Posted by multiweb

Outer neb looks very good but I think you're inner core is cooked and noisy. Your NB previous core had to be the best I've seen. Very intricate details even if the colors weren't your standard M42 I still think it's the best trap area I've seen.

[jase (Jason)]

OK, so here's the image from the other post I assume. I quite like it Greg. Colour confidence is there, but pushed too hard. Always great value to combine data from previous data sets that you've taken. It's certainly growing on me. Mike and others have highlighted a few weaknesses which I feel can be address with careful processing. Keep them coming.

[skeltz (Rob)]

mm okay apart from what other people said...i think collimation out or focus not right....just my 2 cents worth>

[gregbradley]

Originally Posted by jase

OK, so here's the image from the other post I assume. I quite like it Greg. Colour confidence is there, but pushed too hard. Always great value to combine data from previous data sets that you've taken. It's certainly growing on me. Mike and others have highlighted a few weaknesses which I feel can be address with careful processing. Keep them coming.

Thanks Jase. I'll revist this one anf tweak it some more. I probably will take some more LRGB next trip whilst Orion is still around.

Originally Posted by skeltz

mm okay apart from what other people said...i think collimation out or focus not right....just my 2 cents worth>

Hi, I thought that may be the case when someone said double diffraction spikes meant collimation was out but I checked it with a Tak collimation scope and it was spot on. Also a visual check up the tube showed perfect orientation. Also some of the stars in the luminance etc are super pinpoint so focus is perfect on LRGB. I did redo a whole set of LRGB because focus was off one night which was an annoyingly unusual error.

The narrowband component is from a TEC180 refractor so no collimation issues there. Focus was also very spot on and imaged under good sub 2 arc sec seeing (under 1 arc sec one night) but what you mainly see in this image is the LRGB and the narrowband is accentuating the colour making it a lot richer than the LRGB was by itself.

Greg.

[gregbradley]

I tweaked the core more using some of the better narrowband core data and reduced noise a tad.

I am quite happy with this one now but will be shooting some more TEC180 LRGB for it next trip if the weather gods permit.

Same link.

Greg.

[LGT150 (lucien)]

Vraiment slpendide;
amicalement Lucien

[gregbradley]

Originally Posted by LGT150

Vraiment slpendide;
amicalement Lucien

Thank you Lucien. I don't speak French but I got the idea of what you were saying.

Greg.