I am building a little 8" F6 truss Dob. Currently I have it configured for very little in-focus and a 2.5" of back focus.
All my 1.25" and 2" eyepieces I can bring into focus, but now I want to photograph what I am looking at.
The only 1/2 decent pics I have gotten so far is mounting my cell phone over an eyepiece. I have a Nikon D5500,
ZWO CCD, Teleskop Service 2" flip mirror system & off axis guider, a couple ZWO filter wheels, 2x, 5x 1.25" barlows
and a 1.6x 2" barlow.
I cannot figure out A focal or prime focus, with or without barlows when using the DSLR or CDD.
I wish I could find some folks with Dob's that use DSLR's or CCD's to photograph and how they are setup.
I still have the option to give myself more in-focus if needed.
Thanks in advance,