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Rosette Bi-Colour and Natural


Phillyo

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Morning all,

Well thankfully the clouds passed (mostly) last night and left me a window of opportunity to gather 7 x 1800s subs in OIII on the Rosette. First off, WOW what a difference between the Astronomik 12nm to the Astrodon 3nm...I know what my next purchase is going to be!

Also, this is really my first try using PixelMath and Pixinsight to do a colour/bi-colour image so please be gentle!! However, I'm wanting to learn the technique so any advice is as always very very much welcome and appreciated.

I know I've made some mistakes in the processing but for a first try I've gotta say, I'm pretty over the moon!! I would've liked the central OIII portion to stand out a bit more than it does though, slightly stronger shade of blue perhaps? Any ideas?

Thanks,
Phil

HST
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Natural
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Phil

You have two excellent images and for your first HOO rendition you must be pleased.  You're obviously enjoying your scope and set-up and it is delivering super results.

I'm not sure what proportions of Ha and OIII you used in your PixelMath formula for each channel and I regularly use between 20-30% Ha blended with the balance of OIII in the G channel (and the R and B too sometimes), varying the Ha contribution depending on the results.  There are a number of web tutorials which you may well have discovered already, so apologies if these references are known: http://lightvortexastronomy.blogspot.co.uk and http://www.ip4ap.com (some free tutorials), as well as the PI resources website.  Harry's tutorials are excellent too which I'm sure you will have seen. I have purchased the Warren Keller PI tutorial dvds and have found them very helpful (although a little bit of a luxury I know).  InterChannel Curves can be useful too to vary hues (a module that you need to download and install) along with the MultiChannel Synthesis Scripts.  I will often try a variety of processes on clones and gauge the best result, it is quite subjective though.

Although I've been using PI for 18 months or so now, I don't pretend to be anything but a learning novice and I'm happy to bounce around/swap ideas & techniques with you if you'd like to PM me.

Clear skies.

Barry

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Hi Barry,

Thanks for the link, I've already got that saved in my Astrophotography folder of favourites :)

So 4 Beers and some swearing later I think I have it. Spent most of the afternoon/evening playing with the data for this, more because I was learning than actually trying to produce anything ground breaking. Good news is, I have learnt a lot :) so I'm happy.

Final result isn't terrible either :)

Phil

15879531500_6437b54100_b.jpg

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Superb image Phil. I think the final image posted looks beautiful. You have some wonderful depth in the nebulous areas and have chosen a lovely rich but subtle colour pallette.

Interesting to hear your opinion on the 3nm Astrodons. I am currently using the standard Baader filter set, the Ha is 7nm, and am beginning to think my best next upgrade step is to the Astrodon narrowband filters. Your image only serves to strengthen that idea.

You are making some fantastic images with your current set up, well done and I wish you clear skies!

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Thank you all for the kind comments, very appreciated :)

Gav, regarding filters. The difference between my Astrodon 3nm and Astronomik 12nm is crazy. I'll upload a jpg of each from the rosette so you can have a look. It's mostly the star differences, although I'll be honest and say I don't know if that's because one is Ha and one is OIII or because one is 3nm and one is 12nm? Someone smarter than I will know :)

http://s4.photobucket.com/user/Mercenary118/media/OIII12nmAstronomik.jpg.html

http://s4.photobucket.com/user/Mercenary118/media/HaAstrodon3nm.jpg.html

Hope they work,

Phil

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