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Zhumell Tachyon 25x100
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Specifications
| Manufacturer | Zhumell |
|---|---|
| Model | Tachyon 25x100 |
| Lens diameter [mm] | 100 |
| Magnification [x] | 25 |
| Angular field of view [deg] | 3 |
| Linear field of view [m/m] | 52/1000 |
| Exit pupil [mm] | 4 |
| Eye relief [mm] | 15.4 |
| Min. focusing dist. [m] | 27 |
| Twilight factor | 50 |
| Brightness | 16 |
| Prisms | BaK-4/Porro |
| Dimensions [mm] | 385x270x138 |
| Weight [g] | 5000 |
| Waterproof | Yes |
| Nitogen filling | No |
| Argon filling | No |
| Image stabilization | No |
| Tripod exit | Yes |
| Focusing | individual |
| Warranty [years] | 0 |
| Accesories | |
| Price | 0 |
| Additional information |
Owners reviews (1)
Overall
Owner since: 1 month
Price: $230
User profile: Amateur
Cons: Minimum IPD of ~60mm Heavy - requires a sturdy mount Built-in tripod mount has some play in it A fair amount of CA when viewing bright objects
Pros: Great light gathering My pair was perfectly collimated Excellent price/performance Comes with nice hard case Accepts standard 1.25" filters (but this subtracts from eye relief)
Summary: Very impressed with the build quality and performance for the price. Not top-quality optics but very good for the price. Provides excellent views of star clusters and nebulae. I was even able to make out the bands of jupiter. Requires a *very* sturdy, tall mount. I use a D&S provista18 video tripod with FM18 fluid head and it works well. I also recommend adding a spacer between the head and the built-in tripod mount. The tubes are so large on these that clearance with the tripod head may be an issue.