Histogram question

[Aza]

Hi

Here is what the histogram looked like for my raw subs:

What does this mean about the exposure length? Is it too long?

This is the final image from these subs:

If the exposure lengths were too long, would this have been a much better image if I used shorter subs? Or would it not be that much affected?

cheers

[FLO]

Applying regular photographic understanding, that histogram suggests that the exposure was a little long (you don't have a true black) so could've been shortened slightly for greater hilight detail. Overall though that is an excellent histogram and a fantastic image

[FLO]

Aaran, what did you use to make that image... ?

[Aza]

Thanks Steve.

This was with a modded Canon 400D, through a Skywatcher 200p.

[Aza]

My thinking was also that the histogram should not go all the way to the right edge either, is that correct?

[jgs001]

If the histogram is to the right edge like that, you've lost highlight detail to burn out, which is what has happened to the two large stars showing there. Whether that's wrong or not... I don't know, to my inexperienced eyes, it looks fine.

[FLO]

With an image like that with prominent bright/white stars it is to be expected that the histogram shows clipped hilights (all the way to the right).

[Psychobilly]

Ideally yes I suppose but its almost inevitable when you have stars in the image as they will "burnout" after realtively short exposures but then you won't have any fainter detail...

Billy...

John & Steve got there first

I would certainly stick with what your doing as it's a cracking image...

[Aza]

Thanks guys, makes sense.

I was just thinking I may have been pushing the exposure lengths too far. However the bright stars explain it, and make me feel happier that I have not over done it

[FLO]

Same image with a black

[Aza]

:salute:

[FLO]

Histograms are great! They are the modern-day equivalent of the exposure-meter but much more powerful

[steppenwolf]

Its a cracker of an image anyway but I feel that bringing in the black makes an improvement worth making. My 'by eye' method of levels adjustment matched Steve (FLOs) exactly!

[Aza]

Yeah for sure....you know what its like when processing, you spend so long looking at it, that sometimes you need to step back and try again or make adjustments