غطاء التركيز أسترو زاب لتلسكوب ETX 90 - AZ-402

Turning that center knob to the open position is so simple, and those three off-axis masks made a real difference for my DSLR sessions—focusing finally clicks for me. It's a small piece, but it does exactly what it should, no fuss.

I was struggling to get sharp stars with my ETX 90, but the off-axis masks make focusing on a CCD sensor so much easier. The center knob clicks into place nicely, and the whole thing feels solid for the price.

Finally, no more guessing at focus with my DSLR. The three off-axis masks in this cap make each shot crisp and clear, exactly what I needed for my ETX 90.