Long story short... Would you get a binoculars with 8.4° @ 8x40 or one with 7° @ 7x50?
For some reason Oberwerk makes Mariners in both sizes. If only they made 7x50s with a 8.5° FOV!
My goal is to find a low power binocular that will allow me to observe a few of the brighter DSOs. At first glance the 7x50s seem like the obvious winner, more aperture and lower power. But the primary reason I use binoculars is for the immersion factor. That would lend itself to the 8x40s with a whopping 8.4° FOV... but smaller aperture means less light.
I already own a pair of Orion GiantView ED 16x80s and a custom parallelogram mount. They are amazing under my Bortle 2 sky. But I'm always adjusting the collimation, I swear just taking them out of the bag moves the prisms!?! I enjoy the views, but something simpler with half the magnification is what I'm looking for.
What are your experiences with low power binoculars under dark skies? Or maybe I should drop $350 on the 20×80 Deluxe III's and sell my Orion GiantViews!