Rosette Nebula in Narrow Band - Now with RGB data

[Stevec35 (Steve)]

A seriously good Rosette there Paul - well done.

Steve

[PRejto (Peter)]

That is a really fantastic image! It does indeed look 3D. I envy you the time that you can devote to collecting so much data. I feel like a beggar; begging for the clouds to part and then begging that they stay open for even part of a night! (oh, I forgot to beg that all the equipment plays nice too.)

Peter

[astronobob (Bob)]

Mighty Spectacular & top Class imaging Paul ,,,

[Paul Haese]

Thanks everyone for taking the time to respond.

Originally Posted by IanP

Noise
Just awsome ...

Yes Ian even in my images I see noise. Like I said I try to limit that noise by gathering as much data as I can to limit the noise. Screens that show very high resolution can see the noise. So it is there, but certainly lower than most would be worried about.

Originally Posted by Bassnut

wow, that link is bravely large, and you got away with it Paul. Huge detail and razor sharp. It looks on fire, excellent colour.

Thanks Fred. You might have noticed that I have been increasing the resolution of my images in the last year or so. This one was at 2600 pixels wide. Images with slightly more noise I set to 2200 pixels wide. I thought you might like the colour too. Slightly more saturated than normal for me.

Originally Posted by Placidus

Joyously beautiful, Paul. And thanks for the excellent tutorial. Much appreciated. Can explore this image for a long time. Best, Mike.

Thanks Mike. Like you I think there is lots to see and explore in this object. There are some really interesting gas and dust sections.

Originally Posted by PRejto

That is a really fantastic image! It does indeed look 3D. I envy you the time that you can devote to collecting so much data. I feel like a beggar; begging for the clouds to part and then begging that they stay open for even part of a night! (oh, I forgot to beg that all the equipment plays nice too.)

Peter

While our levels of cloud are less than you guys over there on the east coast, our levels of cloud this year have been a little higher than in the last few years, though not producing as much rain; so I understand where you are coming from.

The return of the cloud after the drought is what prompted me to work towards automation and it has worked for me. You have the equipment and I would encourage you to work along the path of automation, in particular a roof that opens and closes without you undertaking the task. It will mean you are more productive on nights where even a sub or two means you are building on an image.

A stable system is a starting point and something you need to get right first. Hangs and equipment failures need to be eradicated so the automation does not hang on you as that can lead to gear being exposed to rain. Once you have all that sorted you won't be begging for data anymore, it will start to flood in for you.

[timcz (Tim)]

Wow -incredible!

[lazjen (Chris)]

Great image even without the RGB data!

[Paul Haese]

Thanks Tim for the compliment.

Originally Posted by lazjen

Great image even without the RGB data!

The preliminary RGB data has made a large impact to the overall finish again of this image. While the NB data looks good, adding the RGB data in really going to hit the spot I think. Another session or two might yet be required to eliminate any noise in the colour data before I release the image to the web, so stay tuned.

[alpal]

Originally Posted by Paul Haese

Thanks Tim for the compliment.



The preliminary RGB data has made a large impact to the overall finish again of this image. While the NB data looks good, adding the RGB data in really going to hit the spot I think. Another session or two might yet be required to eliminate any noise in the colour data before I release the image to the web, so stay tuned.

Hi Peter,
Your pic is already one of the best I've ever seen.

To halve the noise - which is so small now -
you'll need too much more data:

SII = 8 frames now = 1/√8 = 1/2.82 of noise follows half noise again = (2 * 2.82)² = 31 follows that
31 - 8 = 23 extra frames = 690 minutes = 11.5 hours extra hours.


Ha = 15 frames now = 1/√15 = 3.87 (2 * 3.87)² = 60 frames
60 - 15 = 45 extra frames = 45 * 30 minutes = 1350 = 22.5 extra hours.


OIII =25 frames now 1/√25 = 5 ( 2* 5)² = 100
100 - 25 = 75 extra frames = 75 * 30 minutes = 2250 = 37.5 extra hours.


That equals a total of a further 71.5 hours to halve the noise in each channel!
Isn't 24 hours of data enough?

These are the days of mega data.

cheers
Allan

[Paul Haese]

Yes the point of diminishing returns is quite relevant here Allan. It is not worth doing that much data for this image. Although I was only going to do data collection on the RGB data not on the NB data. I am content with the NB data. When I was saying I would collect a few more nights worth I actually meant on the RGB data set.

The image I have in process has virtually no visible noise in it now after adding the RGB data. I was concerned that the noise of the RGB data would affect the NB image in a negative way but it has not. I will wait until tonight to post that for people to see.

[alpal]

Originally Posted by Paul Haese

Yes the point of diminishing returns is quite relevant here Allan. It is not worth doing that much data for this image. Although I was only going to do data collection on the RGB data not on the NB data. I am content with the NB data. When I was saying I would collect a few more nights worth I actually meant on the RGB data set.

The image I have in process has virtually no visible noise in it now after adding the RGB data. I was concerned that the noise of the RGB data would affect the NB image in a negative way but it has not. I will wait until tonight to post that for people to see.

Hi Paul,
Ok - I would have thought that just an hour of data for the RGB stars would be more than enough
& keep the narrow band as it is - it's so nice.

cheers
Allan

[SkyViking (Rolf)]

A fantastic view of this fine nebula Paul, the level of detail and colouring is impressive and the 3D look is very obvious. Great work .
With RGB stars it'll be an amazing image, looking forward to see that!

[Paul Haese]

Originally Posted by SkyViking

A fantastic view of this fine nebula Paul, the level of detail and colouring is impressive and the 3D look is very obvious. Great work .
With RGB stars it'll be an amazing image, looking forward to see that!

Thanks Rolf, the detail and colour is what I was aiming for from my previous effort. I am quite happy with the look of this image now and will be moving onto the next target.

The image now has RGB data included and is finalised. It is 29.7 hours of integration.

[alpal]

Originally Posted by Paul Haese

Thanks Rolf, the detail and colour is what I was aiming for from my previous effort. I am quite happy with the look of this image now and will be moving onto the next target.

The image now has RGB data included and is finalised. It is 29.7 hours of integration.

Hi Paul,
that's fantastic.
Please submit it for an APOD.

cheers
Allan

[Paul Haese]

Originally Posted by alpal

Hi Paul,
that's fantastic.
Please submit it for an APOD.

cheers
Allan

Thanks Allan. I submitted a couple of days ago but given the amount of images that are submitted I doubt that it will get up. Time will tell but at least I am in the pool.

[alpal]

Originally Posted by Paul Haese

Thanks Allan. I submitted a couple of days ago but given the amount of images that are submitted I doubt that it will get up. Time will tell but at least I am in the pool.

That's good Paul,
I see it submitted here:

http://asterisk.apod.com/viewtopic.p...ions&start=125

Good luck.


cheers
Allan

[atalas]

Looks awesome Paul!well done.

[Star Catcher (Ted Dobosz)]

Absolutely wonderful Paul! Love the detail and colours.
Ted

[niko]

best thing to come out of Adelaide in a long time :-)

[Paul Haese]

Thanks Loui and Ted for taking the time to comment.

Originally Posted by niko

best thing to come out of Adelaide in a long time :-)

Hey, watch it Niko. I will take it as high praise though.

[cazza132 (Troy Casswell)]

Wow! that is outstanding!!! One of the best I have ever seen of Rosette. Nice differentiation with narrowband - something that cannot be done with a DSLR. An inspiration for me to finally pull the trigger on a genuine imaging scope some day