Quote:
Originally Posted by gregbradley
The Optolong enhance L filter - is that a narrowband filter?
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The OP said it's an L-Pro, Greg, which is more of a broadband LP filter & seems to have pretty good transmission in the blue so in theory it should allow it to be captured.
I think the main issue Trevor is that it's super faint AND extremely large.
My image here:
Blue Horsehead was taken with a Samyang 135mm lens at f2.8 under really dark skies. I did crop it a little but the image is still 9 degrees across - getting background sky around the blue horse-head for contrast with even a small, fast f-ratio telescope (without resorting to mosaics) would likely take a camera with a pretty large sensor.
Hope that gives some context. It's definitely a challenging object.