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Author Topic: Post your unprocessed images here for help from our members.  (Read 33089 times)

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Offline 661-Pete

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Re: Post your unprocessed images here for help from our members.
« Reply #15 on: 20:44:48, 25 August, 2007 »
Well, perhaps it took a while to start the ball rolling (people shy are they?) but if anyone wants to start over with my recent Barnard's galaxy, they're welcome to try!  This is a crop of the JPG (minimum compression) which I SavedAs after stacking but no other processing nor re-sizing.  I don't have anywhere to host the (huge) FITS, and anyway, the orginal subs as downloaded from camera were JPGs.   I couldn't be bothered with RAW format in the camera for this session, it fills up the memory card in no time!

Click on the thumbnail for the full image.


18 x 3min at 1600 ISO.  Each sub was de-trailed with Focusmagic before stacking with straight average (in ImagesPlus).  The 'hollow' appearance of the bright star seems to be an artifact of the de-trailing.
Pete

(Orion Europa 250, Vixen GP, Canon EOS350D) Telescope and mount in France, but not doing much at present..

Offline tomhow

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Re: Post your unprocessed images here for help from our members.
« Reply #16 on: 23:04:47, 25 August, 2007 »
yup, that is a lovely set of data Nick. Responds well to abuse.  :lol:

I suspect I've gone far to far with the processing...  blame it on the booze.  wesdasd

  • maxim ddp
  • into photoshop
  • noel enhance dso
  • noel local contrast enhance
  • selectively sharpened and selectively blurred.



[attachment deleted by admin]
Tak Sky 90, Atik 490, Homemade Mount, OAG, Lodestar

The Curdridge Observatory

Offline icpass

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Re: Post your unprocessed images here for help from our members.
« Reply #17 on: 12:55:33, 27 August, 2007 »
Hi this is M1 10x3min subs 1x1 bining with atik 16ic combined with maxim and processed in photoshop.
I cant seem to get it much better My guiding was out so ignore the trails.

Ian :-\

[attachment deleted by admin]
Ian
William optics 105 triplet,Ed 80mm and Wo 66mm tripple  mounted,on pier  Eq6,meade dsi as guide cam and Atik 16 ic main imager and using phd guide software In custom built observatory.

Offline tomhow

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Re: Post your unprocessed images here for help from our members.
« Reply #18 on: 13:00:00, 27 August, 2007 »
IAn ,you need to post the raw stack straight out of Maxim  - can you put it on a website for download? (in FIT format)

or PM me and I'll stick it on mine.
Tak Sky 90, Atik 490, Homemade Mount, OAG, Lodestar

The Curdridge Observatory

Offline icpass

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Re: Post your unprocessed images here for help from our members.
« Reply #19 on: 13:49:46, 27 August, 2007 »
Tom

How do i send the fits file.

Ian
Ian
William optics 105 triplet,Ed 80mm and Wo 66mm tripple  mounted,on pier  Eq6,meade dsi as guide cam and Atik 16 ic main imager and using phd guide software In custom built observatory.

Offline davemahoney

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Re: Post your unprocessed images here for help from our members.
« Reply #20 on: 13:57:03, 27 August, 2007 »
Anyone fancy a go at the Moon?
Taken last night and the seeing was dire to say the least, the Moon is quite low at the moment.
I don't know where the colour cast came from, i am sure white balance was set to outdoor :-\
Due to the atmospheric turbulence accurate focus was nigh on impossible.
400 frames stacked. No other proccessing.

Dave.

[attachment deleted by admin]
Skywatcher ED80 pro
Celestron 114mm short newt.
ASTSC1C Webcam.
Fuji finepix s3500.
Bresser 10x50 bins.
Switched Systems electronic focuser.
And a couple of eyepieces and filters.

Offline tomhow

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Re: Post your unprocessed images here for help from our members.
« Reply #21 on: 14:07:04, 27 August, 2007 »
Tom

How do i send the fits file.

Ian


http://astro.neutral.org/tmp/m1.fit

Some tricky gradients in this one. 
Tak Sky 90, Atik 490, Homemade Mount, OAG, Lodestar

The Curdridge Observatory

Offline synner

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Re: Post your unprocessed images here for help from our members.
« Reply #22 on: 15:35:25, 27 August, 2007 »
Duplicated the layer
Applied 'dust and scratches' filter on the duplicated layer (radius 15, threshold 0) to get rid of the stars
Drew a loose mask around M1 with the lasso tool, and feathered the edge by 10 pixels
Filled the blob with a dark colour from just off the nebula
Changed the blend mode of this layer to difference
Adjusted transparency of layer to 85% to taste
Flattened
Reduced noise (level 7 preserve details 30%)
Save as JPEG (high quality)
Posted here :D




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Nick
synner.co.uk

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Offline koootzz

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Re: Post your unprocessed images here for help from our members.
« Reply #23 on: 16:09:02, 27 August, 2007 »
Hi folks

Would any of you be kind enough to have a play with this stack of M31

One hours worth of exposure in 90 sec subs stacked and dark frame subtracted in DSS

Original and my effort posted here, link to 9.8MB 16 bit tiff file is here http://www.box.net/shared/xtger16yzy

Thanks

Leigh

Edit: I've have run through DSS again but this time taken out a flat that I created today, file is here http://www.box.net/shared/vr8of13fqc



[attachment deleted by admin]
Leigh
vixen 60s, modded 1000D, modded 300D, DSI I, 10" dob (work in progress), some other bits and a stupendous talent for attracting cloud!

Offline jaycee

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Re: Post your unprocessed images here for help from our members.
« Reply #24 on: 17:35:34, 27 August, 2007 »
I had a go at your moon pic, Dave.

The colour cast is predominantly red and it was removed with minus green and minus blue... open the levels histogram and set the white and black point sliders in each of the RGB channels rather than setting them for the RGB composite channel. This will bring your colours back to somewhere near normal. The low angle of the moon must have dictated that you were imaging through much thicker atmosphere than if you were shooting the moon when it was higher in the sky.

I tried to use the variations dialogue to correct the remaining colour cast, which was easily done with the effects slider set to very fine adjustments. I found it harder to re-introduce some semblance of the correct sort of colour so I settled for a grayscale conversion. Then reconverted back to RGB, to allow me access to a full range of tools and applied a fine RSA grayscale correction, in an effort to bring the highlight and shadow values within a range of normality. Levels histogram for luminance values and then very specific sharpening tools from Pixel Genius were used... I ended up with a medium weight sharpening effect for wide edges, to try and keep artifacts to a minimum but jpeg files are not happy to be sharpened too much.

The focus was some way off and I tried to apply a gradient focussing mask but had no success with that. Anyway... voila!

Cheers, Dave wesdasd
Jeff

[attachment deleted by admin]
Jeff wesdasd ~ Celestron Nexstar 102 SLT

Offline jaycee

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Re: Post your unprocessed images here for help from our members.
« Reply #25 on: 18:39:47, 27 August, 2007 »
Hi Leigh. I had a shot at your M31. My first thought was that it seemed to be kind of noisy and then I thought that the contrast could be enhanced and finally, there seemed to be a lot of stars in the noise near the DSO and I thought that some could be lost without killing the subject entirely.

First step was to take the tif file into Nebulosity and I separated it into the RGB components and saved them as FITS files. I used Noel's tools to bring each colour channel file into Photoshop via the FITS liberator plugin from ESA. There was an excess of blue in the composite and I was able to remove it using the individual channel sliders for white and and black point in the levels histogram.

I reduced the stars and made them a little less crunchy with Noel's tools, which I used to enhance the DSO and I also opted to enhance the contrast to try and show the dust lanes more clearly. Before these processes I had reduced the deep space noise via Noel's tools.

The final image was tweaked for colour using the grey point slider in the levels histogram for each of the channels so that I could get to something like the colour I wanted to see. Resized to 800 pixels in the length and saved as jpeg file at a quality setting of  9 out of 12, to reduce the file size for the forum.   ghghghghgt

Cheers, Leigh wesdasd
Jeff

EDIT: typos

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Jeff wesdasd ~ Celestron Nexstar 102 SLT

Offline davemahoney

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Re: Post your unprocessed images here for help from our members.
« Reply #26 on: 18:43:44, 27 August, 2007 »
I like the proccess Jeff.
It has brought out some of the ruggedness to the terain.
Your notes have been jotted down :D
The Upper Atmosphere last night was like looking through heat haze, hence i could not find a decent spot to focus on ;)

Dave.
Skywatcher ED80 pro
Celestron 114mm short newt.
ASTSC1C Webcam.
Fuji finepix s3500.
Bresser 10x50 bins.
Switched Systems electronic focuser.
And a couple of eyepieces and filters.

Offline jaycee

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Re: Post your unprocessed images here for help from our members.
« Reply #27 on: 18:51:40, 27 August, 2007 »
I like the proccess Jeff.
It has brought out some of the ruggedness to the terain.
Your notes have been jotted down :D
The Upper Atmosphere last night was like looking through heat haze, hence i could not find a decent spot to focus on ;)

Dave.

At your service, Dave. :) I wondered why you didn't just shoot through a hole in the Ozone layer. :D Good to learn that you like the process too.

Cheers, Dave wesdasd
Jeff
Jeff wesdasd ~ Celestron Nexstar 102 SLT

Offline davemahoney

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Re: Post your unprocessed images here for help from our members.
« Reply #28 on: 18:56:24, 27 August, 2007 »
The sun :wicked:
Sunspot 969
4.5" Newt.
IR block
Prime focus.
80 frames stacked in Registax

Dave :)

[attachment deleted by admin]
Skywatcher ED80 pro
Celestron 114mm short newt.
ASTSC1C Webcam.
Fuji finepix s3500.
Bresser 10x50 bins.
Switched Systems electronic focuser.
And a couple of eyepieces and filters.

Offline jaycee

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Re: Post your unprocessed images here for help from our members.
« Reply #29 on: 19:08:11, 27 August, 2007 »
Extracting the urine?  ghghghghgt

Jeff
Jeff wesdasd ~ Celestron Nexstar 102 SLT

 

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