|
Orion Ultrablock and other UHC filters are ideal for you 8". They will enhance all views of the vast majority of emission nebulas, and planetary nebula.
They are pretty much essential for detecting the tiny dot-like planetary nebula. You hold the filter in your fingers and either move it left and right across the top of the eyepiece, or hold it over the eyepiece and tilt it up and down 45 degrees - and the planetary nebula becomes obvious.
When the UHC filter fails to pick up the planetary, I go to the O111 filter, which then usually does the trick.
Regards,
Renato
|