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AstroZap Focusing Cap for ETX 105 - AZ-404

AstroZap Focusing Cap for ETX 105 - AZ-404 - Main image
$64.68 $86.24 In stock

Category: Telescope Accessories

AstroZap Focusing Cap for ETX 105

When you want help focusing an image during a CCD or DSLR sessions turn the center knob to the "Open" position and reveal a trio of off-axis masks. This position allows the focusing cap to operate like a Bahtinov mask. The Astrozap Focus Cap doesn't stop there. Rotate the knob again to place the cap in the "Closed" position and take dark frames or use it as a dust cap.



Made from lightweight aluminum and powder-coated black, this Astrozap Focusing Cap is both strong and aesthetically pleasing. For installation: Three thumbscrews hold the Focusing Cap firmly in place.



The AstroZap Focusing Cap for ETX 105 will fit 110mm-120mm optical tubes.

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Customer Reviews (4.8 / 5 · 5 reviews)

Timothy ★★★★★

This solved my focusing issues with the ETX 105 during DSLR shoots—the three off-axis masks reveal a sharp, clear image instantly. Turning the center knob feels smooth and precise, making the switch from open to closed effortless. Exactly what I needed for crisp astrophotography.

Ruby W. ★★★★★

I was struggling with manual focusing until I twisted the center knob and saw those three off-axis masks pop into position, a clever design that works perfectly with my Meade. The masks are cut cleanly and align snugly, making my astrophotography sessions noticeably sharper.

Adam D. ★★★★★

Setting up the off-axis masks for my DSLR was surprisingly quick, and the center knob opens smoothly to give exactly three distinct focusing aids. The build feels solid enough that I don't worry about it slipping off the ETX 105's focuser.