Can anyone tell me what a Blug/TuBlug is? I'm looking at buying a solid tube 10 inch dob and getting a barlowed laser for collimation. Looking at the BINTEL website it says to use the TuBlug for solid tube newts but I can't seem to find any info on what this is or why it needs to be used?
The images of Kevs on the thread that he supplied the link to should help.
I have been using an 1 1/4" TuBlug with one of Howie Glatters 635nm (I think) lasers for collimation of my scope prior to and during my planetary imaging sessions and it is the most accurate double pass laser system that I have ever used. I chose the 1 1/4" version as my filter wheel and CCD nose cone are also 1 1/4".
For a Newtonian Reflector all you need is the TuBlug and 635nm laser.
I believe the holographic adapter is designed for other scope designs.
Wade, I think the 1 1/4" version would be far more suitable for your scope for visual use. The best short focal length, high mag eyepieces tend to be 1 1/4" so it is logical that you would want to collimate your scope with a collimating system that uses the same 1 1/4" adapter on your focuser that your high mag eyepieces will use.
Low power wide field eye pieces are far less sensitive to collimation where as any error in collimation will be exacerbated when using short focal length high mag eyepieces.
