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S11500 SKYWATCHER SKYMAX 90MM MAKSUTOV-CASSEGRAIN OPTICAL TUBE

$299.95
SKU:
S11500
Weight:
5.0000 LBS
Shipping:
Calculated at checkout
Quantity:

Product Description

Products Features
 
The Sky-Watcher Maksutov-Cassegrains are the ultimate take-anywhere telescopes. They are also ideal if working space is limited. Despite their small dimensions they pack a powerful punch. Their High-Resolution, diffraction limited optical systems are multi-coated to maximize contrast and image sharpness.The optical tube can be mounted on a standard photographic tripod. Whether your requirement is for terrestrial or astronomical use, these compact scopes are the perfect companion.    
 
Specifications
 
SKU S11500
UPC 050234115001
Optical Info 
Optical Design Mak-Cass
Mirror Coatings 94% Aluminum
Lens Coatings Fully Multi-Coated
Glass Type BK7/Borosilicate
Primary Aperture (mm) 90
F/Ratio 13.9
Focal Length (mm) 1250
Secondary Diameter 29mm
Secondary Obstruction (by diameter) 32%
Secondary Obstruction by Area 10%
Observational Info 
Dawes Limit 1.29
Rayleigh Limit 1.55
Limiting Mag. 12.3
Minimum Magnification 13
Maximum Magnification 177
Light Gathering (compared to next size down) 27%
General Info 
Focuser Primary Mirror
OTA Length (Retract/Ext.) 11"
OTA Outer Diameter 4.125"
OTA Weight (with accessories) 3.6
Accessories 
Included Finder Red Dot
Included Diagonal 1.25" Star Diagonal
Mounting Accessories 1/4-20" Foot
Included Eyepieces 25/10 Wide Angle
Magnification w/ Included Eyepieces 50x/125x
Included Case Yes
Corrector No
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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