 |
Takahashi
Sky-90 (Retractable Lens Shield)
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. |
 |
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 |
SKY-90 Part Numbers |
| TCK09000 |
Tube Assembly Complete |
| TCK09010 |
Main Tube Only |
| TKA00551 |
6x30 Finder Scope |
| TKA00562 |
6x30 Finder Bracket |
| TKA21420 |
Tube Holder |
|
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Copyright 2003-2006
Astro Scientific Centre Pte Ltd
