Products
SKY-90 Tube assembly ONLY (SKY Series)
TCK09010
Enquiry Item
Takahashi SKY-90 OTA without 2" adapter is merely 355mm (14") in length. This 90mm APO produce razor sharp images and goes anywhere with you.
Enquire for more information or email us specifics at sales@astro.com.sg.
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SKY-90 Tube assembly
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| Takahashi SKY-90 OTA without 2\" adapter is merely 355mm (14\") in length. This 90mm APO produce razor sharp images and goes anywhere with you.
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| Specifications Components :
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![](\"image/catalog/product/takahashi-Sky90_with_camera.jpg\")
![](\"image/catalog/product/takahashi-sky90.jpg\")
![](\"image/catalog/product/takahashi-Sky90_Lens_Shield_Retracted.jpg\")
![](\"image/catalog/product/takahashi-Sky90_on_EM_Mount.jpg\")
![](\"image/catalog/product/takahashi-Sky90_Tube_Holder.jpg\")
| Optical Tube Assembly | |
| Effective Aperture | 90mm |
| Optical Design | Fluorite Apochromat Doublet |
| Focal Length | 500mm/ 407mm w/ reducer |
| Focal Ratio | F/5.56 - F/4.5 w/ reducer |
| Resolution | 1.29\" |
| Limiting Magnitude | 11.5 |
| Image Circle | Ø45mm w/reducer |
| Photo Field | 6.3° w/reducer |
| Tube Diameter | 95mm |
| Tube Length | 560mm~480mm w retractor lens shade |
| Tube Weight | 3.2kg (7lbs) |
| Finder Scope | 6x30 9° |
| Light Collecting Power | 165x |
| Focal Length with Q1.6 Extender | 800mm F/8.9 |
System Chart
![\"SKY90_system_Chart_idx19476918.gif\"](\"image/catalog/product/SKY90_system_Chart_idx19476918.gif\")
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