NGC6188 HST blend 200mm widefield

[multiweb]

Sticking with the program here's my rendition of NGC6188. Big learning curve for me so not perfect. I need to sort out my data acquisition especially Sii. Oiii is a little iffy as well with heavy LP and skyglow on humid Friday night. When I have some more decent data I will try again and complement.

So the blend is R(Sii)6h G(Ha)2h B(Oiii)2h. I shot this with a QHY9 and a SMC Pentax-M 200mm stopped at F/6 Tuesday, Thursday and Friday night from my backyard.

There's a HD version here (http://www.astropic.net/astro/ngc6188_SiiHaOiii_ff.jpg)[2.56MB] and a full frame 1:1 here (http://www.astropic.net/astro/ngc6188_SiiHaOiii_fff.jpg)[6.45MB]

I'll try to post a how to on the blend later on when I've put something together. Thanks for looking. :thumbsup:

[CoolhandJo]

That's nice! Good work on the framing and colours. :)

[multiweb]

Thanks Paul. :thumbsup: I wasn't too sure on the colors but after checking with a few NB aficionados they seem correct. I just need a lot more data.

[TrevorW]

Very nice Marc

[multiweb]

Thanks a lot Trev - glad you've enjoyed it. :thumbsup:

[LucasB]

Beautiful image! Nice and smooth, Like the colours!:thumbsup:
Lucas

[troypiggo]

Very nice blend, mate. Stars don't look too magenta. Look forward to your howto. ;)

[DavidU]

Awesome vista Marc :thumbsup:

[multiweb]

Thanks a lot Lucas. :thumbsup:



Thanks mate. :thumbsup: Finishing off Eta and the prawn now as well. Did you get the mini PS file I sent? I'll email you another one of NGC6188 in the same format.

[multiweb]

Thank you very much David. :thumbsup:

[Ross G]

Great photo Marc.

Nice composition and detail.


Ross.

[troypiggo]

I did. Thanks for those. I thought I sent a reply email?

[gregbradley]

Very nice Marc.

Greg.

[strongmanmike]

Looks really good Marc, seems we might be seeing more colour shots from the Frogenator now..? :thumbsup and that'll be a useful size field in and around Sag, Serpens and Scorpio etc!

Mike

[multiweb]

Thanks a lot Ross. :thumbsup:


Cool. Might have fallen in my junk folder. Will check. I sent another couple last night. Looking at it I think it might be worth consolidating the first few steps in a small action as it's quite repeatitive and gets you in the ball park colours.


Thanks a lot Greg. Glad you liked it. :thumbsup:



Thanks Mike. :thumbsup: Yes I might slowly get into shooting Sii and Oiii from home instead of Ha now as I pretty much shot anything I could think of in Ha. In the SE anyway. I have a lot of things to sort out still with data capture and need to guide 20min and over so got rid of some flexure in the camera/lens holder. Next one to come is Scorpio (prawn, dark tower and the Lorenzi nebula) . Still processing it.

[RobF]

Very interesting image Marc and I'm sure it was challenging to bring together. You wouldn't believe it but out of the blue Peter Tan produced the exact adaptor I needed for my Pentax recently. This was actually the first thing I planned to try - a NB 6188, so nice to see how the master of widefield has tackled it :thumbsup:

Would also be very interested in your processing, especially any PI workflow you might have.

[troypiggo]

He's cheating and using PS :)

[multiweb]

I used PS for this one. Unfortunately I'm not proficient enough in PI to tackle blends yet. That's Troy's dpt. I reckon you could do a better job in PI. Here's a quick run down on things that may help and why based on early experience.

1_ Pixelmath the two lowest channels (ADU) to the highest so usually Sii and Oiii to Ha. I use CCD Stack with int mode for this on a background small selection and check the ADU levels. so if I have Ha 100, Sii 20 and Oiii 50, I'll add 80 to Sii and 50 to Oiii.

2_ Once you've done the pixel math operation stretch the Sii and Oiii (within reason) OR lower/compress the Ha so your 3 histograms have a similar amount of samples.

3_ Combine colors 1:1:1.

4_ All the rest is done in PS which I'll post on later.


OoooYeah! :P

[marc4darkskies]

Nice image Marc! Good to see some colour from you too. How about stretching it a bit more? ... Give it some more impact.

Cheers, Marcus

[peter_4059]

Great image Marc. You've done a nice job with the NB processing too.

[multiweb]

Thanks Marcus. :thumbsup: I think it has already been stretched too much. I don't have the data for it yet. Will amend when sky time allows.



Thanks for the feedback Peter. :thumbsup:

[DavidTrap]

Inspiring Marc - thinking about some more NB filters to do some more imaging from the burbs.

DT

[Paul Haese]

Nice Marc. I agree with Marcus with some more stretching of the data, but I like the subtle look of the colour.

[multiweb]

Thanks David. :thumbsup: I use the Baader 2" set.



Thanks Paul. :thumbsup: That was my first real trial at blending so I might do a repro down the road and see if I can boost tings up a little.