|
Simon, I'm using an f7 102 mm LUNT ED with reasonable success in an LP situation. As Chris says a longer Focal length lets you cut out some of the glow. The rest is plenty of exposures ( more photons please ) and processing skills to seperate the LP form the image. I also use an Astronimik CLS filter in many cases. means more exposures needed but makes processing a lot easier.
The LUNT has quite a long dewsheild which also keeps side glare down and I'm lucky that my backyard and the Ob is well away from streetlights and nearby houses.
Clouds are another matter altogether ....
|