observer
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Nebula filter for observing
in Observing - Deep Sky
Posted · Edited by observer
The 'wow' effect lies a few miles away from the city lights. Under Bortle 8 skies neither filter (OIII or UHC) will make big difference, maybe on good nights making some otherwise invisible/faint nebula barely detectable. I too have 10" dob but the OIII filter do what is advertised to do only under dark skies