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M100 (LRGB)

johnrt

By johnrt
in Imaging - Deep Sky

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johnrt

johnrt

Posted
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Afternoon!



April has failed to disappoint in this corner of the country and I've managed to rack up just a whisker under 17 hours to complete my M100. Taken over several nights there is around 10.5 hours in Lum shot at full resolution and the rest in RGB binned 2x2. M100 is rich in blues and greens (it's teeming with hot young blue stars) but really needs a bit of crowbar to pull out any reds and yellows within the galaxy core.



Not often imaged in it's full glory, I'm not sure why as it's nice and bright and has plenty of surrounding galaxies of all different types, quite a fascinating area.



The equipment is all the same as usual, 6"RC Atik 460ex, acquired in SGPro and the heavy lifting done in Pixinsight followed by the fancy bits in CS5.

I very much hope you like :)

16977507328_aa2c8ee2b9_b.jpg

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johnrt

johnrt

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John,where are you finding enough hrs of clear skies for all these lovely images? thanks for sharing them with us :)

I can be quite lucky with my shift patterns when they fall in line with clear skies, stay up as late as you like & no work until 5pm the next day. But it can also go wrong, sitting staring out an office window at moonless clear skies can be so frustrating.

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johnrt

johnrt

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Thank you everyone! Much appreciated!

Nice one John - I clearly need to move back to the UK....... April has massively disappointed me with less than 2 hours in the bag over the whole month so far :(

And it's another clear one tonight!! :eek: (at the moment)

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johnrt

johnrt

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Amazing. Is it actually possible to see this looking like that or is it the processing that enables it?

I know somewhere in between zero and nothing about observational astronomy, so others may be able to give you a more concise answer, but it is a no I'm afraid.

It is not the processing that allows the image to show so much more detail and colour, but the sensitivity of the camera chip v's the human eye ball. I am not aware of any deep space objects in which colour can be seen with the eye, apart from the Orion Nebula which has a kind of blue green hue so I'm told.

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ollypenrice

ollypenrice

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Great again. Never done this one and you make it look so tempting!

Being picky I just find the cooked central core a bit obtrusive. If you used only the RGB, without the L, for this tiny inner part do you think you might subdue it a bit?

Olly

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johnrt

johnrt

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Quite possible Olly, It's worth a second look at the processing for sure. M100 does seem to have an exceptionally bright very inner core, the image below is from a 24" RC and even that is struggling to resolve and control it.

m100s.jpg

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