yet another noob :)

Questions and answers about processing in StarTools and how to accomplish certain tasks.

yet another noob :)

Postby mstiles » Wed May 17, 2017 8:07 pm

would it be possible for someone to look at my data and see what i'm NOT doing, or, maybe DOING to get consistently yucky results?

this is the unadjusted output of dss, 32bit..

https://www.dropbox.com/s/w4xwn3risfnn9 ... s.TIF?dl=0

here is my best attempt at it so far.. i think i cheated and only used Develop after the first autodev/bin/crop/wipe...

https://www.dropbox.com/s/dof749lefm2kd ... S.TIF?dl=0


when i don't "cheat" i end up with the below screenshot in the denoise module.. yuck

https://www.dropbox.com/s/yrtoo3rb1mipb ... 6.png?dl=0


never used the dropbox before, so i hope i did all that right ( first time for everything )
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Re: yet another noob :)

Postby Bill55 » Thu May 18, 2017 6:59 am

Who said it was easy? Don't give up, I'm still learning as well (after nearly 3 yrs). There are some brilliant guides in the User Notes forum section written by a guy called Guy. Work through them and take some time to experiment with the settings. Its a steep learning curve.
I'm sure someone on here can take your image and do something brilliant in a couple of minutes. For me it took too long to open your dss image so I gave up. The other images look like something good should come out.
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Re: yet another noob :)

Postby mstiles » Thu May 18, 2017 2:39 pm

thank you Bill!! i'll take a gander at those notes
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Re: yet another noob :)

Postby admin » Fri May 19, 2017 1:53 pm

Hi there!

I had a quick look at the data set.

The data set appears to have been color balanced somehow (and possibly pre-processed by some other means). Can you confirm you are using the settings as seen here?

Quick Start Tutorial: a quick generic work flow


Image
^ Giving StarTools virgin data is of the utmost importance. For example, if you are using DeepSkyStacker, make sure 'RGB Channels Background Calibration' and 'Per Channel Background Calibration' are set to 'No'.


Can you tell us a bit more about the acquisition details, and you gear?

When you are ready to do your "final" stretch with AutoDev (where you say you "cheated" by using a more manual Develop), be sure to specify (e.g. click and drag) a Region Of Interest over the object (or a slice of it). Without doing this, AutoDev will optimise dynamic range for the whole image rather than just the small object of interest. The latter is great for screen-filling nebulosity, but needs a bit of help in case the image is only partially "interesting" as is the case in a wide filed like this.

Does this help?
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Re: yet another noob :)

Postby mstiles » Fri May 19, 2017 11:38 pm

Thank you for the reply Ivo... thanks to Bill's tip about the User Notes, i've been making PROGRESS!!

i now have the dss settings set to No on both background calibs... also am outputting the 32 bit fits ( 16 before )

i've spent all day reprocessing 3 of my other images and have made each one of them vastly better ( they still probably suck ) than before.. again, thanks to the user notes ( a MUST read(s) if you are like me and don't know *h** from apple butter about all this stuff )

i'm re-stacking the M57 data now.. oh, acquisition... using an ED80T-CF, canon t6i (unmodded).. i took 120 30sec subs at iso800, 30 darks and flats, and re-used bias frames from 2 days earlier

my guide scope and camera is in-route ( yay, something else new to learn ) and i haven't gotten a field flattener yet, but desperately need one.. i have a feeling i may need more data for M57 to shine, but i'm going to give it another try using the new "stuff" i've learned..

i did get over-zealous and posted a couple on astrobin already :roll:

http://www.astrobin.com/295889/C/

and

http://www.astrobin.com/296141/?nc=user


i hope those links work
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Re: yet another noob :)

Postby admin » Sat May 20, 2017 6:44 am

Ha!

That's pretty awesome stuff you're producing - very good really for someone just getting started.

The M81/M82 image could - if fidelity allows - possibly benefit from some deconvolution (there's some really cool/unusal reddish outflow detail lurking in M82). You can increase fidelity a little by Binning (a little). It's a tradeoff.

Are you using a light pollution filter at all? How do you calibrate your colors in StarTools? Is this the default it comes up with?
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Re: yet another noob :)

Postby mstiles » Sun May 21, 2017 2:41 pm

thanks!

beginner's luck obviously

no filters, and (from the User Notes) used a star mask and Sample to get the initial color.. then did the adjustments like the attached screenshot

i've been trying the Bin, but i don't think i know how to bin "a little".. i seem to loose all of the colorful "fuzz" afterwards.. can you create a mask in Color to just target the fuzz you want to mess with?

guess i should play more
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