Star Mask - Parametric for Camera & Telescopes

Parametric Star Mask - Newtonian Style Spikes

Give your camera lens or refractor telescope a "Newtonian" look with this parametric star mask. This mask creates clean, 4-point diffraction spikes on bright stars in your image.

Originally designed and sold under the Astro By Orlando brand, I am now sharing these files for free with the community as I can no longer keep up with physical shipments due to starting a new job.

How to Customise

This model is fully parametric. To get the size you need:

1. Click the "Customise" button on this page.
2. Input the Diameter of your lens or telescope.
3. The model will automatically regenerate to your exact specifications.
4. Download the generated file and print.

Sizing and Fit

To make the correct size, measure the outer diameter of your lens hood or dew shield.

• The model includes a 0.5mm tolerance, so entering your exact measurement should provide a good fit.
• If you prefer a "soft" fit to protect your lens, you can enter a slightly larger diameter and add some felt tape to the inside of the mask rim.

How to Use

1. Place the mask over the front of your lens or telescope.
2. Ensure the crosshairs are aligned vertically/horizontally (or at your preferred angle for the spikes).