Joining the pleiades bandwagon with my take of this target
Photon 6" F4 at F3
Poseidon MPro
45h luminance, 30 h color, 11 HA
#Pleiades
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not a trivial target to process, so feedback is welcomed
late sandal
that seems like a pain to edit.
Never seen Ha in that region
feels kinda too soft for that amount of integration no?
sleek path
wdym too soft? too strong denoising?
late sandal
wdym too soft? too strong denoising?
I would say so
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i didn't go that hard tbh, 50 on graxpert denoise
late sandal
also It seems that the background is red, I dont think that thats all Ha
late sandal
what bortle did you take this from?
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bortle 2-3
but it's not uncommon, if you go on AB there are many images with the HA, and they match with what i got
more or less
late sandal
but it's not uncommon, if you go on AB there are many images with the HA, and th...
thats what im looking at
their Ha looks more like streaks of some sort
maybe you got more Ha?
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maybe i could go with a bit less intensity in the blend
i think you are looking at the larger field one (i saw that one as well)
i don't have any visible stream in my HA, that's all i got
looks great
sleek path
i could try reducing the denoise a little and a little less HA blend
i do like that it intersects with the dust, kind of creates a 3D effect
late sandal
i do like that it intersects with the dust, kind of creates a 3D effect
Tbh it does seem like it
lavish fjord
Yea ive seen Ha look really neat on widefield images of m45, but I'm wondering if it's worth it at this fov.
regardless maybe a weaker blend would look great as you guys discussed
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this target is tough nut to crack, one thing if you want to just expose the stars and the brighter nebulosity but if you also want to focus on the faint dust and HA the dynamic range becomes insane
modern shell
holy this is nice
lavish fjord
this target is tough nut to crack, one thing if you want to just expose the star...
Definitely, I haven't even bothered with Ha lol.
In this region
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ok i just discovered the gradientcorrection tool generated some artifacts in the luminance, that's why possibly i have some places with such strong HA signal, because the dust that was supposed to be there wasnt there
lavish fjord
No luck with the new MGC tool in 1.9?
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i tried but didn't like the result, kills too much nebulosity
i resorted to graxpert in the end, gave the best result of the three
this is something i don't really understand of MSGC, if the target image is much deeper than the reference image will it still work
damn the GC had really killed this thing
thank god i asked for feedback
lavish fjord
The MGC data base is pretty deep
Fast lenses in B1 skies I believe
To what extent did you tweak settings for MGC?
I've gotten some solid results from mgc
But I had to tweak just about every slider lol
Also try both databases, I found the user contributed data base to work best with, say, M42, and maybe other targets.
sleek path
this looks pretty good
rich pebble
late sandal
what do you guys think
looks great
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for the HA i have the doubt that since i took part of the data with the moon out, maybe what i am seeing is just the moon overpowering the floor signal of the red channel
clear hill
what do you guys think
some areas on pleiades' edge are definitely oversubtracted
not sure how did you do the gradient correction
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in the new version?
clear hill
and i think @late sandal is right, in the original image the Ha is in places it shouldn't be
clear hill
in the new version?
yeah
both, its better in the later version, but still overcorrected
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yeah the reason behind the HA might be because half of the data was taken with the moon out
and given how faint it is, maybe it's overpowering the floor of the red channel
clear hill
and given how faint it is, maybe it's overpowering the floor of the red channel
yeah true
how did you do the background correction for the RGB, and the continuum sub for Ha
clear hill
try charles hagens' script
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the BG extraction i used graxpert, maybe i will give another shot to MSGC
clear hill
try charles hagens' script
the subtraction weights are automatically calculated using photometric flux measurements
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i just don't have the patience of placing points for DBE on these images, and i doubt i can do a better job
clear hill
clear hill
the BG extraction i used graxpert, maybe i will give another shot to MSGC
yeah use MGC, for pleiades you cant really use background points cuz there is not "background"
make sure you try and optimise the parameters, MGC is super powerful is you do it properly
heres an example with @strange cairn's data, left is MGC and right is ADBE
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the problem i am facing with MSGC is that it's overcorrecting the core of the cluster a lot
strange cairn
I was summoned
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which settings did you use there?
strange cairn
heres an example with <@1084240290061238442>'s data, left is MGC and right is AD...
yes MGC did a LOT better
heady forge
what do you guys think
add some back
strange cairn
@clear hill shud I get more int of focus my time on jelyfish nebula
cuz I dont have much clear skies
clear hill
the problem i am facing with MSGC is that it's overcorrecting the core of the cl...
thats common, you should adjust the scaling factors channel by channel, until the per-channels look as smooth as possible
thats step one
then, you should try the structure protection values (1-5 integers)
see which end gives you a better result, its usually either 1 or 5, the in-betweens seem like a compromise between either
then, raise the smoothness and scale slightly, so that your structures are better protection, but make sure it doesnt smooth out the background model significantly
all this info can be found in Pixinsight's tutorial which nobody watches 😖
clear hill
the settings u use are different every image though, because of "inage compatability" talked about in the pix tutorial
strange cairn
<@443587757567377418> shud I get more int of focus my time on jelyfish nebula
and I wanna start my narrowband jump wagon for winter
clear hill
although, if your sky conditions and equipment are the same, use the previous images' values as a starting point (dont rely on them)
you're incredibly good at processing galaxies, but dust processing is often quite a different workflow
im sure u will get it quickly
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i did quite a few galaxies with a lot of IFN also, the problem here is the dynamic range that i don't face often
but i will get the hang of it, thanks for the tips 
clear hill
i did quite a few galaxies with a lot of IFN also, the problem here is the dynam...
most IFN is reasonably sparse, so dynamic background points would still work, pleiades isnt one of those
also, while you calibrate MGC, make sure you are doing the adjustments using the "show Gradient Model". then you want to aim for a model that shows all of your complex and detailed gradients, but doesnt touch any of your nebula. usually it wont be perfect but thats what you aim for
sleek path
thanks a lot
lavish fjord
heres an example with <@1084240290061238442>'s data, left is MGC and right is AD...
This doesn't look totally accurate either tbh
Some slight over correction
clear hill
This doesn't look totally accurate either tbh
the model was extremely smooth around the pleiades area, looked like background, except for the 6 brighter stars which were undercorrected
i think there was one region that was very barely overcorrect, since i would otherwise be undercorrecting everything else
this part i believe
its still very good though, and the best i could make MGC produce
