sho trouble getting blues

Hi Adam @singding,

Can you please check, I have downloaded the Ha and OIII channels, but the SII URL does not work, it gives a

Not Found

Error 404

unfortunately...

Cheers,

Mabula

https://drive.google.com/open?id=1PhbSaswbCF_Wa_-PddSVr_H4bw7dYvRy

sii

thanks!

Mabula,

Any way you can take a peek at s2 with the other channels? I find it difficult to get the image brighter and get nice colors. I must be doing something wrong.

Thank you sir 

Adam

Hi Adam @singding,

Sorry to have kept you waiting, I will try to have a look first thing tomorrow 😉

Mabula

Dear Adam @singding,

I notice that you applied the remove light pollution tool on on the SII, Ha & OIII channels that you uploaded. Probably it's better if you wait with the correction after creation of the  composite, because I do notice that the correction is a bit off. If you apply it to the composite, you have much more guarantee that it's working okay and that the correction is consistent across the field of view.

I first normalised your 3 channels in 5) and then I used the following the settings:

You can clearly see that in the middle of the filed of view there is a big gradient which isn't natural.

Somewhat different settings, showing perhaps better colors on the left side to give you an idea of possible RGB combine settings:

So I would suggest to first create a nice compositie from the channel data that wasn't corrected for gradients yet 😉

Kind regards,

Mabula

Hi Mabula,

So you are saying the best method is to take the raw "stitched" panels, do color composite,  then lip removal after?

I always have done lp removal first, then did the rgb composite. 

Just want to verify the process.

Thanks

Adam

Ps- thank you for playing with my data!! Haven't touched anything inover a month due to monsoon storms. 

Posted by: singding

Hi Mabula,

 

So you are saying the best method is to take the raw "stitched" panels, do color composite,  then lip removal after?

I always have done lp removal first, then did the rgb composite. 

 

Just want to verify the process.

 

Thanks

 

Adam

 

Ps- thank you for playing with my data!! Haven't touched anything inover a month due to monsoon storms. 

Dear Adam @singding,

In this case, there is no recommended workflow, doing Light Pollution (LP) on all channels/layers before creating the composite can work, but you need to be very careful ;-). If the correction is not done the same for all layers of the composite, you will get these kind of problems.

I usually perform LP after having created the composite for that reason. Doing it after creation ensure that the correction of all layers is consistent and compatible. In most cases it saves you from extra work as well, since LP only needs to be done once in that case.

Whichever way works best is probably data related as well, so therefore I wouldn't say that either way is the way you should follow. Personally, I do LP on the composite, in most cases, that just works fine is my experience.

Mabula