망원경에서 가장 중요한 것이 광축이지요. 광축이 트러진 망원경은 아무리 좋은 아이피스와 천정미러를 사용해도 소용없습니다. 천해의 날씨가 좋은 날에도 광축이 트러져 있으면 별 볼일이 없지요.
아직도 중국에서 사출로 대충 만든 채사이어(Cheshires) 아이피스를 사용하시나요? CNC로 정교하게 만든 Farpoint의 채사이어 아이피스를 사용해 반사망원경을 광축을 맞추어 보세요. 밝고 선명하게 광축을 맞출 수 있습니다.
1.25" & 2" reflective cheshires. Includes mirror spotting template, center spots and instructions.
- ✔ CNC machined from aircraft grade aluminum to exacting tolerances
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Farpoint Astro Cheshire Collimators are polished and hard anodized for a superior appearance and durability.
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2" size fits all standard 2" focusers.
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Farpoint Astro Cheshire Collimators incorporate four primary mirror markings.
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The grip ring is knurled for a sure handhold.
Farpoint Astro 2" Cheshire Collimator - Red
The Cheshire collimation device is the most simple, intuitive tool made for adjusting the primary mirror collimation in a Newtonian telescope system. And now, thanks to Farpoint Astro, it's one of the most attractive, too!
The Farpoint Astro 2" Cheshire eyepiece is relatively insensitive to poor fit in the focuser since many (especially inexpensive) focusers are oversize. This design flaw leaves laser collimators cold since a loose fit means the laser beam is aligning in the wrong spot. For this reason, we suggest using the Far Point Astro 2" Cheshire Eyepiece in conjunction with our single beam laser collimator. First use the laser to adjust the alignment of the secondary mirror, then adjust the primary mirror alignment using the Cheshire. With this technique, we align our scopes in under two minutes!
Each Far Point Cheshire Collimator includes four primary mirror marking triangles and detailed, illustrated instructions. An alignment template for applying the triangles onto mirrors up to 12.5" diameter is also included. The template has metric sized marks for import telescopes as well as domestic models. For those with mirrors larger than 12 inches, Far Point Astro offers larger templates (sold seperately) or a free pattern download for those who wish to print their own.
To use the Farpoint Astro Cheshire collimation system, a reflective triangle center "spot" is applied to the primary mirror in a one-time application process. Once applied, all one needs to do in order to align the primary mirror is insert the collimator into the telescope eyepiece holder. Look through the sight hole and adjust the primary mirror collimation knobs to center the reflective triangle in the image of the white ring projected by the collimator. The system works in daylight or and night with the aid of a dim astro-flashlight aimed down the telescope tube.