#1  
Old 24-07-2021, 11:01 AM
koputai's Avatar
koputai (Jason)
Registered User

koputai is offline
 
Join Date: Nov 2007
Location: Sydney, Australia
Posts: 1,648
Sample image wanted

Hi Guys and Gals,


I sold most of my gear years ago, but have now got a bit of time so am starting to dream again.


Before I go out and spend lots of money (again) on scopes, mounts, cameras etc, I thought I'd try and get some practice in on the image processing side of things. I have used the old 7D to take a few hundred lights, darks, biases, flats, but as it's unguided and very short exposures, even my stacked results are pretty shabby.


I'm hoping someone might share a decent stacked .tif file ready for processing that I can practice with. Of course I wouldn't post results as my own or anything, it would be just for my personal use at home.


Alternatively, is there somewhere I can purchase such a file online?


Thanks for your consideration.


Cheers,
Jason.
Reply With Quote
  #2  
Old 25-07-2021, 01:26 PM
PKay's Avatar
PKay (Peter)
Registered User

PKay is offline
 
Join Date: May 2017
Location: DEPOT BEACH
Posts: 1,643
To easy Jason

Can give you any format, LRGB Ha, S2, O3 combined or separate.

Here is a LRGB image (Non Linear) of M33 after stacking and combining saved as .TIF.

https://1drv.ms/u/s!AoeEixCwZOsLgnjT...JDcaJ?e=lP4dQ8

I don't work with TIF files so good luck!

Needs to be trimmed, background removal, noise removal, deconvolution, curves and anything else you can think of.

Have fun and YES post your work here!

Offer is open to anyone, just give me a credit
Reply With Quote
  #3  
Old 25-07-2021, 02:35 PM
Zuts
Registered User

Zuts is offline
 
Join Date: Mar 2007
Location: sydney
Posts: 1,830
Apparently you can get the raw hubble data which is available for processing https://www.instructables.com/How-to...egacy-Archive/
Reply With Quote
  #4  
Old 26-07-2021, 07:50 AM
koputai's Avatar
koputai (Jason)
Registered User

koputai is offline
 
Join Date: Nov 2007
Location: Sydney, Australia
Posts: 1,648
Thanks for the info guys, and thanks very much Peter for generously sharing your data, it’s much appreciated.

I’ll have a go at it, and post here if the results aren’t too laughable!

Cheers,
Jason.
Reply With Quote
  #5  
Old 26-07-2021, 10:51 AM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,932
My basic test processing, just curves.

Quote:
Originally Posted by PKay View Post
Here is a LRGB image (Non Linear) of M33 after stacking and combining saved as .TIF.
https://1drv.ms/u/s!AoeEixCwZOsLgnjT...JDcaJ?e=lP4dQ8
I don't work with TIF files so good luck!
Needs to be trimmed, background removal, noise removal, deconvolution, curves and anything else you can think of.
Have fun and YES post your work here!
Offer is open to anyone, just give me a credit


Peter,

This is your image data and how I usually do processing (after stacking) in a hurry (and otherwise), using Canon DPP (curves only).
I was always thinking there should be more to it, so I am very interested to see how additional processing can improve this image (which is excellent already and close to the limit of equipment capabilities IMO).
Attached Thumbnails
Click for full-size image (m33.jpg)
214.8 KB29 views

Last edited by bojan; 26-07-2021 at 11:09 AM.
Reply With Quote
  #6  
Old 26-07-2021, 12:52 PM
PaulSthcoast (Paul)
Registered User

PaulSthcoast is offline
 
Join Date: Feb 2019
Location: Ulladulla NSW
Posts: 287
Ok....

I was hesitant to post a reply to the challenge.

There were a few choices for my processing,
but I went with Snap seed for the first image and
Windows viewer for the second.

Like Bojan, I used curves to do the bulk of the processing.

A little noisy, but over all I'm happy with the result.

Thanks Peter.

Paul.
Attached Thumbnails
Click for full-size image (Resized_M33_LRGB_02_-_Copy_(2)_(1)-01.jpg)
186.3 KB23 views
Click for full-size image (Resized_Screenshot_20210726-140419_Gallery.jpg)
123.4 KB24 views

Last edited by PaulSthcoast; 26-07-2021 at 01:04 PM.
Reply With Quote
  #7  
Old 26-07-2021, 12:56 PM
PKay's Avatar
PKay (Peter)
Registered User

PKay is offline
 
Join Date: May 2017
Location: DEPOT BEACH
Posts: 1,643
Quote:
Originally Posted by bojan View Post
Peter,

This is your image data and how I usually do processing (after stacking) in a hurry (and otherwise), using Canon DPP (curves only).
I was always thinking there should be more to it, so I am very interested to see how additional processing can improve this image (which is excellent already and close to the limit of equipment capabilities IMO).
Hi Bojan

Each channel was stacked (after calibration), and stretched.
Then LRGB combination.

No other processing done.

Maybe it would have been better to offer the 4 channels in linear format?

Have I made it to easy?
Reply With Quote
  #8  
Old 26-07-2021, 01:06 PM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,932
Quote:
Originally Posted by PKay View Post
...Maybe it would have been better to offer the 4 channels in linear format?
Have I made it to easy?

Maybe
Reply With Quote
  #9  
Old 27-07-2021, 02:03 PM
PKay's Avatar
PKay (Peter)
Registered User

PKay is offline
 
Join Date: May 2017
Location: DEPOT BEACH
Posts: 1,643
Quote:
Originally Posted by PaulSthcoast View Post
Ok....

I was hesitant to post a reply to the challenge.

There were a few choices for my processing,
but I went with Snap seed for the first image and
Windows viewer for the second.

Like Bojan, I used curves to do the bulk of the processing.

A little noisy, but over all I'm happy with the result.

Thanks Peter.

Paul.
Done good Paul

Secound image is the better one.

Never used 'Snap seed' , might have used 'Windows viewer', for viewing...

Take Martin's advice and try Startools maybe ( I use PixInsight).

Always a learning curve, whatever path you go down
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 03:18 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
Testar
Advertisement