Hi George, sorry, not sure if it's the low res crop, but the details look kinda mushy on the neb, especially where those dark lanes & the jet are blurry.
Also the blue seems to be very dominant, not sure why that is but it's affecting the emission section.
I've attached one I did a couple of years ago with my old OSC.
Excuse the dodgy elongated stars and it's a bit rough compared to your nice smooth one, but hopefully you can see what I mean and maybe have another look at the processing.
I think there's a nice image in that data set of yours
Last edited by Andy01; 05-07-2016 at 03:45 PM.
Reason: typos
Ok firstly, stop the bragging about the clear weather ok, we southerners are currently severely depressed during winter, hearing your wonton gloating just makes us more depressed
Seriously though, this is a good effort and I think the colours are indeed pretty close to what they should be. You see, many image processors work the nebula to be very Blue-Red but in reality if we are looking at the physics going on here (I co-authored an article on this with David Malin which appeared in the Sept 07 edition of Sky & Space mag), the Trifid has a lot of dust and molecular cloud associated which not only contributes to the blue reflection due to Raleigh scattering but by mixing also imparts a turquoise-green hue and even white in the area just outside the central dust lanes ..and you have that showing here quite well
Ok firstly, stop the bragging about the clear weather ok, we southerners are currently severely depressed during winter, hearing your wonton gloating just makes us more depressed
Seriously though, this is a good effort and I think the colours are indeed pretty close to what they should be. You see, many image processors work the nebula to be very Blue-Red but in reality if we are looking at the physics going on here (I co-authored an article on this with David Malin which appeared in the Sept 07 edition of Sky & Space mag), the Trifid has a lot of dust and molecular cloud associated which not only contributes to the blue reflection due to Raleigh scattering but by mixing also imparts a turquoise-green hue and even white in the area just outside the central dust lanes ..and you have that showing here quite well
Mike
Thanks Mike, the wontons are good up here too but come Sept/Oct everything gets put away, the chances of a clear night is minimal.
Thanks for your comments, i tried to find the article but could not, is there a copy anywhere
, i tried to find the article but could not, is there a copy anywhere
Well, after writing that to you I went to get the mag issue from my shelf of mags with stuff of mine published in it and couldn't find it..then I looked on all my hard drives for the original article and couldn't find that either ..dang, I'll ask on the general forum and see if anyone has that issue?
Thanks for your comments, i tried to find the article but could not, is there a copy anywhere
Quote:
Originally Posted by strongmanmike
Well, after writing that to you I went to get the mag issue from my shelf of mags with stuff of mine published in it and couldn't find it..then I looked on all my hard drives for the original article and couldn't find that either ..dang, I'll ask on the general forum and see if anyone has that issue?
Mike
Here you go George, courtesy of IIS member Mark Hillen, who scanned the article and emailed it to me, I have placed it in my Trifid Nebula album
Please note the colour and depth reproduction in the magazine wasn't great originally and then it has been further degraded in the scanning process...but the words at least, are unaltered
I wrote the article and then David Malin proof read it, made some minor suggestions and voila!
Here you go George, courtesy of IIS member Mark Hillen, who scanned the article and emailed it to me, I have placed it in my Trifid Nebula album
Mike
Thanks Mike and Mark, i'm still unsure of how it supposed to look so i will try a repro to see if i get any changes. I do seem to have more of the blue reflection area surrounding the Ha and Hb than yours and other images. Also i might take some Ha images and blend it with the red
Not so much about conforming as such, just kinda making the colours make sense from the physics I guess? In the end there ain't no hard and fast rules in this crazy game we call astroimaging and plenty of Trifids look good with varying degrees of colour license, heck, look at narrowband imaging can have plenty of fun there
Not so much about conforming as such, just kinda making the colours make sense from the physics I guess? In the end there ain't no hard and fast rules in this crazy game we call astroimaging and plenty of Trifids look good with varying degrees of colour license, heck, look at narrowband imaging can have plenty of fun there
Mike
Thanks Mike, i am very impressed and in some ways, humbled, with the images that some of the more artistic minded imagers produce esp narrowband, but i think the physics is beginning to be where i want to be. I'm 65 and about to retire but its time for further study.
Quote:
Originally Posted by Andy01
Looks much nicer than the previous one on my iphone George!
firstly, stop the bragging about the clear weather ok, we southerners are currently severely depressed during winter, hearing your wonton gloating just makes us more depressed 
..dang, I'll ask on the general forum and see if anyone has that issue?
can have plenty of fun there 
