opticoholic
Well-known member
Hello,
I have noticed that when I use my triplet APO telescopes for bird photography, the images I get, while incredibly sharp, often have a noticeable milky or hazy quality. I will attach an example. Is this normal and is there anything I should think about changing to help it? I can usually improve the problem by adjusting levels when post-processing. Here is an improved, better copy of the Tree Swallow photo:
https://www.dropbox.com/s/lqhws69fx2r1wa7/P4130550_Tree_Swallow.jpg?dl=0
But I'm just wondering if there is something else I can do to avoid the issue in the first place and I figure you people would know... My scopes are high end APO's that I use for astronomy as well as bird photography. Both have oil-spaced triplet objectives with the very best current multi-coatings, etc. I don't think I have any light leaking going on, and if I do I'm not sure what I would do to help it. I do use a simple clear filter on the 2" tube that goes into the telescope extension tube, simply because I'd rather have something helping to protect the sensor from dust, but I could remove that filter.
Thank you and I hope this forum is not completely dead because I'm still having fun using telescopes as bird lenses!
Dave
I have noticed that when I use my triplet APO telescopes for bird photography, the images I get, while incredibly sharp, often have a noticeable milky or hazy quality. I will attach an example. Is this normal and is there anything I should think about changing to help it? I can usually improve the problem by adjusting levels when post-processing. Here is an improved, better copy of the Tree Swallow photo:
https://www.dropbox.com/s/lqhws69fx2r1wa7/P4130550_Tree_Swallow.jpg?dl=0
But I'm just wondering if there is something else I can do to avoid the issue in the first place and I figure you people would know... My scopes are high end APO's that I use for astronomy as well as bird photography. Both have oil-spaced triplet objectives with the very best current multi-coatings, etc. I don't think I have any light leaking going on, and if I do I'm not sure what I would do to help it. I do use a simple clear filter on the 2" tube that goes into the telescope extension tube, simply because I'd rather have something helping to protect the sensor from dust, but I could remove that filter.
Thank you and I hope this forum is not completely dead because I'm still having fun using telescopes as bird lenses!
Dave
