Products
Takahashi BRC-250
TBK25000
Enquiry Item
The Takahashi BRC-250 is of Baker Ritchey Chretien design.
Enquire for more information or email us specifics at sales@astro.com.sg.
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Takahashi BRC-250
![](\"image/catalog/product/takahashi-brc250-big.jpg\") | The Takahashi BRC-250 is of Baker Ritchey Chrétien design. It incorporates an oversized hyperbolic primary and auxiliary lenses to achieve a flat field with perfect star images. Spherical aberration, coma and astigmatism are also greatly reduced. It has a fast focal ratio of F/5 allows faint objects to be photographed at relatively short exposures. Image circle is an incredible 100mm allowing use of formats up to 4x5s. Photographic field of 5 degrees allows framing of the widest field objects such as M31 and M45. |
![](\"http://astro.com.sg/images/takahashi-BRC250_OTA.jpg\") |
![](\"image/catalog/product/takahashi-BRC250_Focuser.jpg\") | ![](\"image/catalog/product/takahashi-BRC250_Front_View.jpg\") | ![](\"image/catalog/product/takahashi-BRC250_Rear_View.jpg\") |
![](\"image/catalog/product/takahashi-BRC250_Primary_mirror.jpg\") | ![](\"image/catalog/product/takahashi-BRC250_Secondary.jpg\") |
![](\"http://astro.com.sg/images/specification-tab.gif\") | Tube Assembly |
| Aperture | 250mm |
| Primary Mirror Diameter | 260mm Hyperbolic w Enhanced Coating |
| Corrector Optics | Twin element fully multi-coated |
| Optical Design | Baker Ritchey Chrétien |
| Photographic Format | 35mm, 6x6, 6x7, 6x9, 4x5 |
| Focal Length | 1268mm |
| Focal Ratio | F/5.0 |
| Resolution | 0.47\" |
| Image Circle | Ø100mm |
| Limiting Magnitude | 13.8 |
| Tube Diameter | Ø280mm (11\") |
| Tube Length | 850mm |
| Weight | 20.1kg (44.2lbs) |
| Finder Scope | 7x50 6.3° |
| Photo Field | 5° |
| BRC-250 Part Numbers | |
| TBK25000 | Tube Assembly Complete |
| TBK25010 | Main Tube Only |
| TKA00552 | 7x50 Finder Scope |
| TKP80564 | 7x50 Finder Bracket |
| TKA80420 | Tube Holder |