Acuter Solarus-80 Solar Telescope Optical Tube Assembly
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The Acuter Solarus-80 Solar Telescope Optical Tube Assembly is an 80mm f5 solar telescope with a permanently mounted white-light filter that lets you study sunspots, surface texture and eclipses with confidence. The view comes through a fixed 5-16mm zoom eyepiece, and the built-in filter wheel lets you make simple colour changes to emphasise different solar details. A smartphone adaptor sits in the kit, handy for keeping quick photographic notes of each session.
Acuter Solarus-80 Solar Telescope Optical Tube Assembly Key Features:
- 80mm f5 solar telescope designed for safe white-light observation
- Permanently mounted ISO-certified solar filter protects eyes and optics
- Built-in rotating filter wheel provides quick colour adjustment
- Fixed 5-16mm zoom eyepiece gives three practical magnifications
- Safe solar finder aligns telescope without direct Sun exposure
- Smartphone adaptor helps record observations through the eyepiece
- Crayford focuser provides smooth, precise manual focusing
- Side-mounted 45mm Vixen-type dovetail fits suitable alt-az mounts
FAQs:
How does the built-in solar filter work?
The front element carries a permanently mounted white-light filter that blocks harmful radiation and reduces the Sun's brightness to a safe level for visual use. Because it is fixed, there is no risk of accidental removal during a session, and the system meets ISO 12312-2:2015 transmission requirements. You simply point, centre with the solar finder, and begin observing.
What does the filter wheel add to solar viewing?
The wheel holds several coloured filters, each altering contrast slightly to highlight different details. It can help bring out the edges of sunspots or subtle granulation when the seeing is steady. Having it built in means you can switch colours without touching the eyepiece or disturbing focus.
Can I mount the Solarus-80 on a camera tripod?
Yes, the side-mounted dovetail includes a 1/4”-20 thread that fits many photographic tripods. In practice, a stable video head or an alt-az mount with a side saddle feels more controlled, especially at higher magnifications where small vibrations are noticeable.
Is the smartphone adaptor usable for casual imaging?
It’s designed for straightforward alignment over the eyepiece. While it won’t replace dedicated solar cameras, it works well for documenting sunspots or tracking changes over several days. A steady mount and good lighting conditions around the screen help with framing and focus.
What magnifications does the eyepiece provide?
The included zoom eyepiece steps between 16mm, 10mm, and 5mm positions, providing around 25x, 40x, and 80x magnification. These ranges suit most white-light sessions, allowing you to move from a broader contextual view to a closer inspection of active regions.
Product Specification
| Dimensions | 378mm (length) |
| Eyepiece 1 | Fixed 5-16mm Zoom Eyepiece, adjustable in 5mm, 10mm & 16mm stages |
| Focal Length [mm] | 400 |
| Highest Practical Magnification [x] | 80 |
| Objective Lens Diameter [mm] | 80 |