TAL-250K |
Special Order (OTA) |
|
Aperture diameter, mm |
250 |
Focal length, mm |
2130 |
Aperture ratio |
1:8.5 |
Resolution limit |
0.5" |
Magnification |
85X,170X,213X,426X |
Limiting stellar magnitude |
14m |
Optical Scheme |
Klevtsov /Cassegrain |
Finder, visual magnification, x
objective lens diameter, mm |
9X50, Illuminated |
Focusing device |
2", 1.25",Crayford |
Tube length, mm |
660 |
OTA Material |
Aluminum Alloy |
Telescope weight, lbs |
33 |
|
9X50 Finderscope with mounting bracket
TAL Illuminator with 2 LR44 elements
90 Degree Star Diagonal 1.25" 2X Barlow Lens
10mm SuperPlossl eyepiece
25mm Super Plossl eyepiece
Crosshair reticle for eyepiece
TAL-250K 8.5 is the latest model of the Klevtsov/Cassegrain designed telescope. Primary mirror correction is made without removing the focusing mechanism during a simple star test. Portable design with a superior Klevtsov optical scheme and durable construction allows you to take this powerful telescope with you on the road, easily and worry-free. Klevtsov's revolutionary catadioptric design employs a sub-aperture meniscus correcting lens (like the familiar Maksutov) combined with a Mangin mirror-lens secondary. Diffraction artifacts are well controlled by unique curved spider vanes. OTA is made from an aluminum alloy.
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