| Takahashi TOA-130 | |
|---|---|
| Configuration 組態 | Triplet三合透鏡 |
| Aperture 口徑 | 130mm |
| Focal length 焦距 | 1000mm |
| Focal ratio 焦比 | F/7.7 |
| Resolution 解像度 | 0.89 arc second |
| Limiting magnitude 極限星等 | 12.3 |
| Light gathering power 集光力 | 345X |
| Focal length w/ reducer 用縮焦器時焦距 | 754mm |
| Focal ratio w/ reducer 用縮焦器時焦比 | F/5.8 |
| Image circle 影像圈 | 52mm(60% illuminated) 25mm (100% illuminated) |
| Photographic field 攝影視場 | 3.8° |
| Star image at the centre 視場中心星像大小 | 1 micron |
| Star image at the edge 視場週邊星像大小 | 15 micron |
| Finder scope 尋星鏡 | 7x50 6.3° |
| Focuser 調焦器 | 68mm (2.7") |
| Back focus from 2" adapter/ end of OTA 2"接環後焦距/ 鏡筒本體末端 | 160mm/ 256mm |
| Length of the main tube with dew shield extended 露罩伸長時主鏡筒長度 | 1145mm(S) 1155mm(F) |
| Length of the main tube with dew shield retracted 露罩縮短時主鏡筒長度 | 1012mm(S) 1022mm(F) |
| Diameter of the dew shield 露罩外徑 | 179mm |
| Tube Diameter 鏡筒径 | 156mm |
| Weight of the main tube assembly 主鏡筒組重量 | 10.5kg(S) 12.3kg(F) |