NGC6888 - Synthesised colour and narrowband

[NickH]

Two nights on this in H-A and OIII, then synthesised the blue channel, and played with all sorts of colour combinations, ended up trashing the OIII data in the process (but had images in CS2), but hey ho..

Anyway, this is the first light shot for my new Atik 314L, adding to the previous H-A posting I made, this one is cropped as the alignment was out for the two nights, and I have aimed for something a bit more "off the wall" colour wise..

Possibly will redo it if I can recover the OIII data (or maybe just reshoot it, and add maybe some H-Beta or SII?), as I think it's a tad overcooked on the Noels Actions (Noel has been helpful with some new tips)

Anyway...not bad for an 80mm scope I guess

ED80 at F7.5,. Atik 3124L, DSI-C guide cam using PHD on the EQ6.

Astronomik 13nm H-A and Lumicon OIII filters

Compressed and reduced for upload

(click to enlarge)

[steppenwolf]

Its a fascinating image, Nick and some great detail in there. Sometime I am going to experiment with Ha, SII and OII imaging and then combine the resultant channels in the necessary percentages to produce 'true' colour images - I have done it with test data and it works very well despite being fiddly.

But, back to your image, there really is a lot of stuff in there despite your problems with the OIII data (hope you can retrieve it!) and you've certainly got in close with the 80ED, I imaged this object with my ED80 and M25C a few days back and the Crescent was tiny in my FOV!

Great image.

[Beyond_Vision]

There is an amazing amount of detail in your image it looks like a sea creature to me . Lets hope you retrieve your data or add some more to get the right colour balance.

Regards

Kevin

[barkis]

Crikey Nick, that looks like a living entity. The colours are unfamiliar going on what I've seen, but strangely enough, it doesn't look out of place. It's a great looking object for sure, and it would stay that way if it was in Mono in my book.

Ron.

[moondog]

Excellent image Nick - really like the colour - very artistic!

8)

MD

[ncjunk]

It does look like a work of art that one, it is nice

NC

[SteelRat]

Liking those colours Nick

[MartinB]

That is a stunning Crescent Nick. Is that the chip with the diddy pixels, if so your image certainly helps to demonstrate how well it works at short focal lengths

[narrowbandpaul]

what did u use for blue

[Naz]

Stunning image Nick, lots of detail from your efforts.

Archie

[NickH]

what did u use for blue

Synthesised the colour using the red and green using actions

[narrowbandpaul]

did u add Ha O[iII], or average or scale. Thats what I was meaning, sorry if I want clear. Is this Noels actions....i havent seen or used them yet, are they good?

You can synth blue using 0.34*Ha +O[iII], thats what richard crisp uses. The 0.34*Ha is meant to represent Hbeta 0.34=1/2.92, the ratio of emission probability between Ha and Hb.

See how that works

It has worked quite well for me with the veil

Hope this helps

Paul

[MikeP]

Just for the record - http://stargazerslounge.com/index.php/topic,28170.0.html

Mike

[NickH]

:-)...and a few more...

But thanks for the tip, I did use Noels actions, but then re-tweaked the colour, as this version did look quite pleasing on the eye

Thanks for the feedback everyone

[NickH]

Yes...diddy pixels, it's the ICX285 chipset, same as the 16HR and ART285 and the SXV-H9, but tweaked a bit for less noise, and fast...very very fast!

[narrowbandpaul]

thats the ky, tweak until it looks good to the eye

[narrowbandpaul]

key, i cant type while holding a golden champion beer

[NickH]

Try it with a 2 year old climbing all over you, wanting to watch "monsters Inc" on youtube

:laughing3: :laughing3:

[narrowbandpaul]

its a good film though, but i'll bet the 2 year old is a bit of a handful