80mm ED Triplet APO 115mm ED Triplet APO 130mm ED Triplet APO
Product Number 0306-00-05 4507-00-05 0507-00-05
Clear Aperture 80mm 115mm 130mm

Optical Design

Apochromatic Refractor
Focal Length 480mm 805mm 910mm
Focal Ratio f/6 f/7 f/7
OTA Mounting Vixen®-style mounting plate
Optical Coatings Fully Multi-Coated
Resolving Power (Dawes Limit) 1.45 arcseconds 1.01 arcseconds 0.89 arcseconds
Viewfinder No 8x50mm with cross-hair reticle 8x50mm with cross-hair reticle
Diagonal 2 inch with 99% refelctivity
Optional Field Flattener None 3 inch diameter, 2 element, fully multicoated field flattener
Focus System Crayford-style 2 inch zero image-shift focuser with dual speed 10:1 control Crayford-style 3 inch zero image-shift focuser with dual speed 10:1 control Crayford-style 3 inch zero image-shift focuser with dual speed 10:1 control
Materials 80mm ED Triplet APO 115mm ED Triplet APO 130mm ED Triplet APO
Glass

FPL53 extra-low dispersion glass

FK61 extra-low dispersion glass

FK61 extra-low dispersion glass

Optical Tube

Aluminum

Aluminum Aluminum
Weights and Dimensions 80mm ED Triplet APO 115mm ED Triplet APO 130mm ED Triplet APO
OTA Weight 7.2 lbs. 17.5 lbs. 25 lbs.
OTA Dimensions 4 inch diameter x 18 inches 5.5 inch diameter x 31 inches 7 inch diameter x 37 inches

 

 

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