Watch the NightHome / Accessories / Cheshire collimating eyepiece
Cheshire collimating eyepiece
Ten calm minutes with this beats guessing forever.
around $35
A sight tube with a crosshair that takes the mystery out of collimating your reflector. New Dobsonian owners fear this job far more than they should — with a Cheshire it's a peaceful ten-minute ritual, and your views will thank you for it.
Where to buy
High Point Scientific
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Amazon
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Why we like it
- Fast, repeatable collimation without starlight
- One purchase serves every reflector you'll own
- Cheaper than one service-shop visit
Keep in mind
- Learning curve the first couple of times
- 1.25-inch barrel only fits 1.25-inch focusers
- Won't fix a fundamentally bad mirror
Specs
Details
| Barrel | 1.25 inch |
|---|---|
| Type | Cheshire (sight tube + crosshair + reflective surface) |
| Use | Newtonian / Dobsonian reflectors |