DSS help again please!!!

[Garethr]

Hi all.

can anyone help with the following issue 

I am running a stack with 15 good quality subs of 6mins each . Flats and a master bias added.

Star detection is over 300 for each sub

Theresulting stack has peaks in RGB so thin as to be unusable. 

Images were taken with modded 1100d on skywatcher Quattro on eq6 and look very detailed with dood data on apt.

Im sure it's me and I am missing a setting somewhere any clues people this is driving me nuts.

 

Gareth

 

[Freddie]

You will need to stretch the image in post processing to bring out detail. Maybe if you post up the unprocessed stack people could have a look to better understand the issue.

[Garethr]

OK

This is one sub

CR2

Not touched in any way 

Gareth

 

 

 

[Garethr]

Sorry forgot to add info

300 sec sub @ ISO 800 cannon 1100D modded 

Am I missing something as it looks good to me ?

Gareth  

[Davey-T]

Looks rubbish to me  are you sure you posted the right one ? looks like a gust of wind or something has jogged it.

Dave

[Garethr]

Sorry guys

Managed to pick the one sub that was rubbish 

try this one  Sunflower galaxy

Same issue when stacked 

 

 

 

L_0042.CR2

[Garethr]

Files loaded and scored 

 

Gareth 

[Davey-T]

So what's the problem exactly ?

DSS does put out practically grey images from DSLR.

Just cropped out the galaxy and had a quick play in P'Shop and there is some colour there, got a bit of a red colour cast and noisy sky background but enough processed subs should fix it.

Dave

[StargeezerTim]

I have seen this in one my stacks a while ago bit i dont think it affected the processing much. If you open the autosave, then using levels move the white point up and the black point to the left to enclose the spike, does it look ok?

[Garethr]

Here's the result.

 

Gareth

[Davey-T]

As Tim says have you tried a bit of processing ?

Dave

[Garethr]

and the setting I am using 

 

Gareth

[Garethr]

My concern is there seems so little data left after stacking

When aligning RGB to best position on graph it could sit anywhere on the upward curve and still have almost zero to play with

Normally the peaks are far "broader than this" giving me more to work with 

 

Gareth

[Stub Mandrel]

Try clicking 'set the background to 0 to improve the calibration'.

[Garethr]

Here's a stack on a different PC 

not sure what the settings were, that's kinda my question

have I done something in DSS settings to end up with such a poor result?

 

Gareth 

[wxsatuser]

Could be you were over exposed.

What does the in camera histogram look like for one of the subs?

 

[Garethr]

Mike,

Pretty sure they were good subs  APT showing loads of detail and as I said when stacked by a mate using the same data his showed a reasonable result.

Mine when stacked are white with thin peaks and processing is next to impossible.

To offset this disappointing result just pressed the button on a second hand NEQ6 pro   

Gareth