Request for assistance

[Nigel Ball]

Hello all

I believe I have captured some good LRGB data recently on the Iris Nebula. I've managed to get a reasonable image rough and ready in CS4. However, I really want to move over to PI as soon as ..

I am unable to get anything have way decent using PI at the moment - Andy Warhol would be proud of my efforts    Are any of the PI experts out there willing to spare some time maybe with an online tutorial?

Thanks in advance

Nigel

Here is what I've achieved in CS4 ....... to prove to myself that the data is okay

[Nigel Ball]

Okay

Managed to get a half decent LRGB in PI tonight by stretching and equalizing the R,G,B and L in CCDStack. I'm sure this isnt the right way but it appears to work. 

Anyway combined with all weights at 1 to start even though my eXcalibrator suggests otherwise. To be fair I think eXcalibrator is correct as the blue stars do not look blue. I did try LRGBCombination with the correct weights but I couldnt find the neutralise background function I'm used to.

So pushing on with the 1:1:1 image I applied DBE - an absolutely superb feature Then HDR with a star mask. Incidentally how do you edit the star mask ?

I know have a reasonable start for processing but I'm stuck as to how to bring out the brown dust. It is there and PI's Chrominance Noise Reduction has done a great job - much better than my efforts yesterday in CS4

So I need some guidance

1. what functions to use to bring out the dust
2. how to apply the correct factors for the stars
3. How to edit the star mask and draw on it

Thanks

Here's my current image

[Harry page]

Hi

I usually process my rgb image seperate from my lum and then combine them , how are you doing yours 

To start with I would

1) combine rgb
2) apply dbe
3) carry out colour calibration
4) stretch image
5) use hdr wavlets ( with mask if req )
6) apply acdnr noise reduction
7) tweak hisogram

is this what you are doing

Harry

|BTW   we don't use the draw word here 

[Nigel Ball]

Hi

I usually process my rgb image seperate from my lum and then combine them , how are you doing yours 

To start with I would

1) combine rgb
2) apply dbe
3) carry out colour calibration
4) stretch image
5) use hdr wavlets ( with mask if req )
6) apply acdnr noise reduction
7) tweak hisogram

is this what you are doing

Hi Harry

I pulled the stretched FITS into PI and then used LRGB to comnine all four images

I tried pulling in the linear FITS, the  & R where as expected dark with a few white points however the Green and Blue were a light grey colour. I'd really like to bottom this out and get it all done in PI but I guess it's going to have to been bit sized chunks.

I think I really need to sit down with someone who knows what they are doing as I think I'm making some basic mistakes.

I'll start again with combining the RGB but I seem to get strange colour casts ....

Nigel

[Carlos Milovic]

Hi Nigel

You may upload the files to a server, and then we may process it and share the process icons with you.

[Harry page]

Hi

When you opened the g and b was the screen very light grey , if so try rescaling them it should sort them out


Harry

[Carlos Milovic]

Hey Harry!

Harry page
PixInsight Guru
****
Posts: 666

Finally the devil's mark has been revealed
 

[Harry page]

Hi

Well now you know why I need a helmet 

Harry

Hey Harry!

Harry page
PixInsight Guru
****
Posts: 666

Finally the devil's mark has been revealed
 

[Nigel Ball]

Hi Nigel

You may upload the files to a server, and then we may process it and share the process icons with you.

Carlos

An excellent idea.

Will you email me the instructions?

Nigel

[Enzo De Bernardini]

I do not know if it's a new idea, but maybe one day we can make a virtual meeting using Skype for audio and other application (like NetViewer or similar) to display a live image from PixInsight expert speaker. I think it can be very instructive. And if you can record audio and video, this can be saved and accessed later (like 'tutorials')

Could work?

My two cents 

Enzo.

[Nigel Ball]

Enzo

I think that is an excellent idea

Nigel

[Silvercup]

Hi:

If you upload master frames I'll try to process them.

My last image session was a disaster, I tried to shoot RGB with full moon.

Best. Silvercup

[Nigel Ball]

Thanks Silvercup

I've already uploaded the master frames last night to Harry's server - is this the central repository for PI ?

Nigel

[Harry page]

Hi

You can give details out to our PI friends privately ( ie do not make public here ) and they can then download the files

Perhaps just forward the email I sent you


Regards Harry

[Harry page]

Hi

I have downloaded your files and we will start with the simple  !  ( me )

Some fits files play havoc with PI and 2 of yours are these  please read http://pixinsight.com/forum/index.php?topic=2184.0  to see whats this is about


What I did was load the rgb  files as above and combine them , then save them in Pi 32 bit mode    All safe from there

Harry