Aperture Mask Dimension Form
Your name.
Phone number (for shipping document).
Primary e-mail address.
Confirm e-mail address.
Your zip or postal code.
Country.
Tube outside diameter.
Tube inside diameter.
Primary mirror diameter.
Secondary mirror holder diameter.
Number of spider vanes.
Curved or straight spider vanes.
No
Yes
Does spider stalk extend beyond the front of the tube?
