SPX350 M51 L-HaRGB.

[johnh]

SPX350 F4.53, EQ6, ATK-16HR.

1) L-Ha6nmRGB = 106-60 30 30 40mins in 5min subs.

2) L-RGB

3) Core detail closeup left Hubble images all on right.

Only average seeing but came out reasonably well and did have some autoguiding problems with polar alignment.

Imaged in LRGB as well as H alpha blended with red channel also core cropped closeup shows a bit of detail next to hubble images getting closer till a blackhole is hinted at in the core.

About 600-500 million years ago small older companion made the first pass against this big galaxy causing gravitational waves to ripple right across galaxy which in turn altered the density of nebulas areas (shown in red in LHaRGB image) pushing them in places beyond critical mass triggering star burst creations everywhere (shown in the blue in LRGB image). Recent 2nd pass by 50-60 million years ago has continued this star burst activity.

Thanks for viewing, JohnH.

[Beyond_Vision]

Very nice colour and detail in the first pic

Regards

Kevin

[moocher]

Puts my feeble attempt in the shade!!!! Stunning work John!!!!

Alan:)

[Aza]

Cracking image! The Ha really helped improve things.

[Stephen Green]

Fantastic images John I lke the detail

Stephen

[ashenlight]

Great images JohnH, the Ha really made a difference in the first one. Love the extra information you have added at the bottom too, about the density of nebula areas. Makes for very informative viewing, especially when you can relate the info you have given to the actual image. Great work.

I also like the extra wispiness in the second image though, only just noticed that.

Amanda

[Psychobilly]

Brilliant

Peter....

[Dangerous-Dave]

First class John, first class.

[Doc]

Amazing detail John.

One of the best I've seen.

[bazza]

I agree John - super detail.

I like the LRGB one best, but all first class images.

Top class processing too.

Barry.

[johnh]

Thanks guys for looking, when I did a flash from HaRGB to RGB found RGB contained a bit more detail but Ha gave better colour contrast and sharper looking image. JohnH.

[Tim]

Very nice indeed, great post all round

[centroid]

Great results John

Nice work indeed!!

Dave

[ngc2403]

Great stuff,

i love the info and the HST shots compared to your own! The shots are sharp and show lovely details in the arms

nice stuff

ally

[trudie]

Lovely images,

Trudie

[MartinB]

Great work John. Fantastic colour depth especially with the Ha