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Hi, i have a problem with my atik camera, not sure if its just me or the camera but every time i try to combine diferent chanels i get realy washed out pic, almost no color in them, all chanels look almost the same, i checked the efw but it works fine, so i have no idea what i'm doing wrong. please help :)
ps. sory for my broken english.
pps. here is link for M51 files that i shot with camera, if some one wants to check if they get the same result.
Recently I decided to open up my wallet widely and go Narrowband...
And before my set up comes, I decided to check how to process NB images.
The last half a year was mostly cloudy so I started playing around with Hubble TelescopeRaw Images
If someone will decide to kill some cloudy evenings in the same manner,
Hubble Telescope raw images are freely available on Hubble Legacy Archive https://hla.stsci.edu
And please also share your results on this forum.
My first pancake below - "Pilar of Creation" (part of it) combined in Pixinsight.
(M16-P1 - [Used Images: hst_10393_13_acs_wfc_f658n_sci & f502n_sci])
P.S. Raw Hubble Images are sooooo ugly... I was very, VERY pessimistic about my experiment initially
I shot my 1st full Bi-Colour NB image back in October/November of 2017. It was the Elephant Trunk Nebula, and at the time i remember having a hard time processing it to my own satisfaction.
Fast-forward 5 months and, well the weather is bloomin awful, lol, and the nights are now short, so i thought i would re-visit this in the hope i could do better now that i have a bit more PP experience under the belt.
The main differences this time (apart from rotating the image to frame it differently) are, RGB combination was done in APP rather than PS. The OIII signal was also given an x2 multiplier to help boost it (this meant i didn't have to give it a big manual stretch in PS). No HLVG has been done at all this time, as i now prefer to leave the Green in, as i think it adds more depth to an image, as long as it's not excessive. This has made a big difference i feel, as from memory i think i really went to town on removing the Green in the original version, and subsequently everything came out brown as a result. I also went with a smaller stretch overall compared to last time, although i did up the Vibrance quite a bit in the new version (i couldn't help myself). Overall though, compared to the original the new version has had a LOT less processing done to it. Whether that shows (or even helps) i'm not completely sure.
Still not 100% sure it's the best version of itself it can be, but overall i am much happier with the result. I actually didn't do any sharpening at all in this one, so i could possibly do something there.
C&C most welcome please. Have i gone overboard on anything? I had a hard time getting the overall brightness to a level i was happy with. When i thought i had it right, i looked at it the next day at work and on my phone and it looked way too dark, so i ended up cranking it up several notches as a result.
7 x 600s and 14 x 900s of Ha
17 x 900s of OIII
(just shy of 9 hrs in total).
50 Bias and 30 Flats
Combined as SHO. The SII was synthesized from a blend of 30% Ha and 70% OIII.
Taken with the usual gear: Nikon D5300a and SW 80ED scope on a HEQ5 Pro mount.
Captured with SGPro, pre-processed with APP and post-processed with PS.
Here's a link to the original thread:
And the latest version:
By Red Dwarfer
With the 2 Baader filters , Continuum and Polarising , that brings the price of the Lunt Solar Wedge up to about £250 - is it worth it at this point of the Solar cycle ?
This is the first "proper" image from my rebuilt 14" Newtonian - has been a long time coming, and more tweaking to follow, but pleased how it performed. I've made a light box which works well and used data from evenings of 13th/15th Feb to create this image (but this showed the R channel, I think, where the OAG impinges and throws an odd reflection and doesn't reduce nicely - need to sort.... :-/).
This is M106 and NGC 4248 (and a load of other faint fuzzies including at least one z>1.0 QSO right at the far left edge of the frame, as well as lots of anonymous galaxies that don't feature in anything in Simbad/Vizier). North is roughly down in this image.
L: 5h35m (56x5m + 21x3m)
R: 1h45m (21 x 5m, 2x2 bin)
G: 1h20m (16 x 5m, 2x2 bin)
B: 1h20m (16 x 5m, 2x2 bin)
ST2000XM (@-20C), 350mm double truss Newtonian @ f4.53 (1584mm FL), Losmandy Titan. Guiding via ASI120mm on OAG.
Reduction and Processing in Pixinsight.
The L channel behaved nicely; colour less so, and was a bit of a challenge to get it to behave, especially the background which I needed to be quite firm with to remove blotchiness. I think really the moral is: more data... a bit more colour (and lum!) data might allow a bit more from the outer reaches and a much smoother background, but clear skies are what they are... Haven't got any HA here to bring out the jets, but the brightest (above/south of the core) is just about visible.
All comments/suggestions/improvements appreciated! Thanks for looking.
Lum channel (pushed a touch more than the above...) - EDIT: had a tweak of it: