Best Method for obtaining Correct Focus with a DSLR Camera?

I know this is a CCD forum however could not locate one dedicated to DSLR imaging so hopefully this is the correct location. I have a CANON 20D inbound (to cheap to pay for a proper CCD rig) and am looking for recomendations on how to achieve optimal focusing. Intend to hook the camera up via a low profile T-Ring adapter to standard 2" eyepiece interface (will be used in conjunction with a Van Slyke Slider II backended off a C-14 for night time imaging or configured with a Solar Spectrum Ha .3 angstrom filter during the daytime)......

Have looked at the STELLAR TECHNOLOGIES website and notice they offer a STILLETO designed to aid with the focusing process...has anybody had experience with this product...if so do you recommend purchasing or is there another, less expensive but equally effective alternative?

R/Scott Schneeweis

Hello Scott,

I have a Stiletto focuser for my Fuji S2 and I'm very happy with it. I also have DSLRFOCUS, but I still prefer the Stiletto procedure. In my area seeing is always a problem and the readings of the FWHM are very much affected by this. The Stiletto helps to achieve focus independently of seeing conditions and, once you have acquired a little practice, it is a very quick way. The only tricky bit is that you have to pay attention when you replace the Stiletto with the camera: you will use a T-ring and you must be careful not to rotate or move the ring while replacing as this will affect the CCD distance from focal plane and hence the focus. I was worried about this part, but practically never had a problem performing it.

My personal opinion: hope it helps.

Ciao
Luca