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White circular solar filter with black polymer centre, 5.63 inch outer ring, 4.56 inch clear aperture

Unistellar

Unistellar Smart Solar Filter 5.63" 4.56

SKU CH-JAKN-3GRGM

A smart solar filter for Unistellar telescopes that blocks 99.999% of sunlight and fits 5.63" external and 4.56" internal dimensions

  • Safe solar viewing — blocks 99.999% of sunlight with Density 5 rating
  • Enhanced contrast reveals intricate sunspot and faculae detail on the Sun's surface
  • Universal fit for eVscope, eVscope 2, eQuinox and eQuinox 2 telescopes
  • Durable construction with 5.63" external plastic frame and 4.56" internal polymer sheet
  • Smart app integration enables Goto Sun tracking and image capture in under two minutes

Solar filter for Unistellar telescopes

The Unistellar Smart Solar Filter is a dedicated accessory that enables safe solar observation with eVscope, eVscope 2, eQuinox and eQuinox 2 telescopes. It blocks 99.999% of sunlight with a Density 5 rating, protecting both the observer's eyes and the instrument's optics during solar viewing sessions.

Density 5 optical protection

The filter uses a high-quality polymer sheet rated at Density 5 to attenuate solar radiation to safe levels while preserving surface contrast. This specification is the single factor that determines whether the filter meets the safety standard required for direct solar observation through a telescope aperture.

4.56" clear aperture for solar detail

The 4.56" internal dimension of the polymer sheet defines the usable clear aperture, allowing the telescope to resolve sunspots ranging from 16 km to 160,000 km in size. The 5.63" external plastic housing secures the filter to compatible Unistellar models, though the filter is not intended for night-time deep-sky imaging or for use with non-Unistellar optical tubes.

Highlights

  • Safe solar viewing — blocks 99.999% of sunlight with Density 5 rating
  • Enhanced contrast reveals intricate sunspot and faculae detail on the Sun's surface
  • Universal fit for eVscope, eVscope 2, eQuinox and eQuinox 2 telescopes
  • Durable construction with 5.63" external plastic frame and 4.56" internal polymer sheet
  • Smart app integration enables Goto Sun tracking and image capture in under two minutes

Specifications

No published specifications for this item yet.

Questions about this item

What does the 99.999% sunlight blockage mean when I point the telescope at the Sun?

The filter cuts sunlight to a safe level so you can view the solar disc through a Unistellar telescope without risking eye damage.

How does the Density 5 rating affect what I can see?

Density 5 corresponds to the 99.999% attenuation, which is the standard for direct solar viewing and lets surface details such as sunspots and faculae appear with high contrast.

Will the 5.63-inch outer ring fit my eVscope 2 without an adapter?

Yes, the 5.63" external dimension is made to slide onto eVscope, eVscope 2, eQuinox and eQuinox 2 tubes directly.

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