Tiffen 4 x 5.65" 4 Point/3mm Grid Star Effect Glass Filter create multiple points of light, or "stars," streaking outward from a central light source. This can make lighting within the scene take on a more glittering, glamorous appearance. This effect is produced by a series of thin lines etched into the flat optical surface of a clear filter.

The size and brightness of the star lines produced are first a function of the size, shape, and brightness of the light source.

You have additional control through the choice of a particular spacing between the lines on the filter; These spacings are measured in millimeters and range from 1mm to 4mm

A 1mm spacing has twice as many lines as a 2mm spacing; It will produce a brighter star for any given source

Lines in one direction produce a two-pointed star, just a streak through the center of the light

Tiffen offers 4, 6, and 8 point symmetrical star effects as well as additional asymmetrical star patterns through their exclusive Hollywood FX Series (North, Hyper, Vector and Hollywood star effects)

With an 8 point filter, the many star lines may tend to overpower the rest of the image, so use it carefully

Generally, mid-range apertures or larger are sufficient to achieve a good star effect; Always test before critical situations

Related Questions and Answers

Q: 1. Can this be used to replace the diagonal that comes with the Celestron C90?

A: Yes it can

Q: 2. Will these filters work with Smallrig's Mini Matte boxes (the older models)? If not what VNDs would work with those matte boxes?

A: No, the SmallRig VND Filter Set for Star-Trail and Revo-Arcane Matte Boxes is designed specifically for the Star-Trail and Revo-Arcane Matte Boxes. There does not appear to be a VND for the SmallRig Mini Matte Box but you may be able to use a circular VND with the matte box.

Q: 3. Does the accessory tray come off or disconnect to allow easy collapse of the tripod legs for transportation?

A: Yes the tray on the Sky-Watcher Star Adventurer Tripod is removable so you can collapse the legs.

Q: 4. At barely 4 pounds, is this tripod really sturdy enough to handle an iOptron SkyGuider Pro mount (with counterweight), Canon T3i DSLR camera, field flattener, William Optics Z61 telescope, and red-dot finder...and still keep solid polar alignment? Other mounts I've researched are at least 6 or 8 pounds.

A: We will not recommend this with all the weight you want put on.

Q: 5. what are the measurements of the grid?

A: The grid is meant to accommodate Aladdin Bi-Flex 2 which is 24.0 x 12.0 inches.

Q: 6. Are these filters stackable ? let's say i want to reduce light pollution but i want light streaks or i want ND & CPL same time

A: The Neewer ND & Effect Filter Kit for DJI Air 3 (10-Pack) are not available for stacking.

Q: 7. What is the payload capacity on the tripod? I plan on using it with a star adventurer 2i with counter weight, Canon 600d camera and 72ed telescope.

A: You could actually use the Star Adventurer for visual astronomy, too, if you wanted. The mount can handle up to 11 pounds of gear, which means a small refractor telescope with a diagonal and eyepiece are an option.

Q: 8. Will this work with the SKyWatcher EQ3-2 mount?

A: No, this Tripod will not work with the SKyWatcher EQ3-2 mount.

Q: 9. Can you please provide example photographs with & w/o this attachment?

A: Unfortunately, the manufacturer was only able to provide the example photo to the left of the main photo of the Nisha Mirage Effect Attachment 55mm.

Q: 10. where can it be used ?

A: The light is multi-voltage. It can be used in the USA and in most other countries.The light is 100-240VAC 50/60 Hz.