This is for anyone procuding those great narrow band pictures...
Besides Ha, OIII, and SII, which other two filters would you put on a wheel with 5 holes? Would the clear filter that came with my default SBIG RGB set be the right thickness? How critical is the focus difference between different thicknesses/manufacturers? Do I even need to worry about this? Do you even need a clear to get good focus? Would I rather have an IR blocking filter?
Thanks,
Charlie
Besides Ha, OIII, and SII, which other two filters would you put on a wheel with 5 holes? Would the clear filter that came with my default SBIG RGB set be the right thickness? How critical is the focus difference between different thicknesses/manufacturers? Do I even need to worry about this? Do you even need a clear to get good focus? Would I rather have an IR blocking filter?
Thanks,
Charlie
Fort Lewis Observatory: (37.238, -108.052) ~2360m (7744 ft.) elevation.
Darkness - typically 6.5+
Scope - Meade 16" LX200; f6.3 focal reducer
Focus - JMI Smart focus
Camera - SBIG ST-10XE; (~.5"/pixel)
Guiding - AO-8 and/or Meade 5"/DSI/PHD
http://www.fortlewis.edu/observatory
