Hi there,
Do you really need a Nebula Filters to see Nebulas? Can you actually see the colour of the Nebula or is it just more cotrast but in B & W?
Are they worth the money?
So far I have been trying to see Nebulas with little success. (I have a 12' dob)
I have only ever seen these 3 filters advertised for sale and that is the:
Astronomik OIII 2' by Bintel for $440
Sirius Optics 2' by Andrews for $179
Baeder 2' by York Optical for $210
Are they worth the money? does the $440 Astronomik filter provide better visuals then a $210 Baeder one? or Sirius Optics?