Spot the difference "only if you're bored"

[Anthonyexmouth]

OK, i'm gonna post 2 stacked images. anyone with better processing skills than me fancy having a look at these to compare. do the same processes to both and see if there is any difference in the quality of the image. these aren't quality images. i just need to know how they comapre, which is better/worse. 

 now its only an hour of 3 min subs stacked, no darks or flats. this is just testing an idea.

Autosave001.tif

AutosaveL.tif

[Kev M]

Clearly the 2nd one, I would have thought ?

 

 

[wornish]

There is a passing satellite in the second one :- AutosaveL.tif

Not exactly sure what you are asking .

Otherwise not a great difference as far as I can see.

 

[Anthonyexmouth]

ok, these are the same stacked subs from my 760d. one set from the memory card, the other from the laptop. to my eye the laptop one shows more of the thin horizontal strips. just wondering if theres some interference thats causing it or its wishful thinking that i might find a cure. 

[Kev M]

the 001 one is showing artifacts , has it been compressed at some point ?

the L one looks clean.

I cant see any thin horizontal strips ?

 

 

[Anthonyexmouth]

Both should be identical. 20 subs stacked in DSS with the same settings. Only difference being one set are the ones recorded to the memory card the others are the duplicate on the laptop. If you really stretch the image there are 7 thin brownish lines across the image. It looked to me that they were less obvious in the memory card set but I could be wrong