Great info! Is there ever any benefit to targeting a histogram location farther off the left wall? Like maybe shooting for 50% as the average? Or does it not matter unless you’re clipping on either end?
Thank you and great question! Targeting 50% would be good for flat frames. When it comes to imaging your DSO, as long as you don’t clip on either end you should be good. It is important to keep in mind, though, that there are a lot of factors that go into this. Ultimately, does what you are seeing on screen fit your taste (no fine details washed out by a longer exposure). Personally, I wouldn’t recommend going much more than bringing yourself off the left wall as this will help make processing easier, keep faint details in check etc vs imaging mid to high on the histogram. I hope this helps.
Ooh great point! I hadn't even thought about detail sharpness as being a function of exposure length (I mean yes, but more specifically: tracking/guiding isn't perfect, and longer exposures will accentuate that). I was thinking about this Tom Scott video I saw years ago, but watching it again, it's more focused on compression which shouldn't be a factor here. Anyway, thanks for the reply! Definitely helpful! Tom Scott vid: th-cam.com/video/h9j89L8eQQk/w-d-xo.html
That’s a very interesting video, but yes, compression wouldn’t be a function here. We’re more focused on dynamic range and keeping it in the best range possible. Balancing this will allow you to get dimmer aspects of what you’re imaging as well as brighter parts.
Thank you! You just want to be off the left wall but not too far. Going mid way on the histogram could yield over exposure and loss of dimmer details. There’s a lot of factors that go into how far the histogram will be such as light pollution, DSO brightness etc. as long as you are off the left wall you’ll be good. From there get as many exposures as you can and stack them in order to increase the signal to noise :) hope this helps.
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Subscribed! I've also added your channel to our website. Look forward to more of your videos.
Thank you and welcome to the channel! I appreciate the support! What kind of gear are you running?
Great info! Is there ever any benefit to targeting a histogram location farther off the left wall? Like maybe shooting for 50% as the average? Or does it not matter unless you’re clipping on either end?
Thank you and great question! Targeting 50% would be good for flat frames. When it comes to imaging your DSO, as long as you don’t clip on either end you should be good. It is important to keep in mind, though, that there are a lot of factors that go into this. Ultimately, does what you are seeing on screen fit your taste (no fine details washed out by a longer exposure). Personally, I wouldn’t recommend going much more than bringing yourself off the left wall as this will help make processing easier, keep faint details in check etc vs imaging mid to high on the histogram. I hope this helps.
Ooh great point! I hadn't even thought about detail sharpness as being a function of exposure length (I mean yes, but more specifically: tracking/guiding isn't perfect, and longer exposures will accentuate that). I was thinking about this Tom Scott video I saw years ago, but watching it again, it's more focused on compression which shouldn't be a factor here. Anyway, thanks for the reply! Definitely helpful!
Tom Scott vid: th-cam.com/video/h9j89L8eQQk/w-d-xo.html
That’s a very interesting video, but yes, compression wouldn’t be a function here. We’re more focused on dynamic range and keeping it in the best range possible. Balancing this will allow you to get dimmer aspects of what you’re imaging as well as brighter parts.
Great video but what position is the best for Asi585mc? In the middle? Thank you
Thank you! You just want to be off the left wall but not too far. Going mid way on the histogram could yield over exposure and loss of dimmer details. There’s a lot of factors that go into how far the histogram will be such as light pollution, DSO brightness etc. as long as you are off the left wall you’ll be good. From there get as many exposures as you can and stack them in order to increase the signal to noise :) hope this helps.