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PORTA II Altazimuth Mount Unit

Mount Type Altazimuth Mount
Vertical/Horizontal Movement Worm whole-circle movement, vertical/horizontal slow-motion handles attached, vertical/horizontal freestop, firmness control attached
Installment/Uninstallment of Optical Tube Attachment: installment/uninstallment system (safety screw attached)
Maximum Loading Weight Less than about 5.0kg
Weight 5.7kg(with tripod)
Tripod Type Aluminum dual-step adjustable tripod(accessory tray attached)
Tripod Size Length 90⇔130cm

Achromatic Refractor Set

  PORTA II A80Mf PORTA II A80M
Altazimuth Mount Refer to PORTA II Altazimuth Mount above
Optical Tubes Optical Type Refractor Refractor
Objective Lens
(Primary Mirror)
Effective Diameter
80mm 80mm
Lens
Coating
Multi-coated Multi-coated
Focal Distance 910mm 910mm
Aperture Ratio(F) F11.4 F11.4
Resolution 1.45s 1.45s
Limiting Magnitude 11.3 11.3
Light Gathering Power 131x 131x
Size Length 860mm, Outer Diameter 90mm Length 915mm, Outer Diameter 90mm
Weight 3.3kg(main body 2.5kg) 3.5kg(main body 2.5kg)
Finderscope 6x30mm(actual field of view 7deg) XY Spot Finder(equal size)
Eyepiece Part Parts Attachment Size Screw-in : 42mm T-ring screw
Insert : 31.7mm
Screw-in : 60mm, 42mm T-ring screw
Insert : 50.8mm(*1), 31.7mm(flip mirror attached)
Attached Eyepieces 31.7mm in diameter
PL20mm(46x, actual field of view 64min)
PL6.3mm(144x, actual field of view 22min)
31.7mm in diameter
NPL20mm(46x, actual field of view 65min)
NPL6mm(152x, actual field of view 20min)
Others Attachment 2 eyepieces, erect diagonal prism 2 eyepieces
Photography Enlarging, prime focus, compact digital camera (collimate) photography(*2) Enlarging, prime focus, compact digital camera(collimate) photography(*2)
Total Weight 9.0kg(w/o eyepiece) 9.2kg(w/o eyepiece)

ED Apochromatic Refractor Set

  PORTA II ED80Sf
Altazimuth Mount Refer to PORTA II Altazimuth Mount above
Optical Tubes Optical Type Refractor
Objective Lens
(Primary Mirror)
Effective Diameter
80mm
Lens
Coating
Multi-coated
Focal Distance 600m
Aperture Ratio(F) F7.5
Resolution 1.45s
Limiting Magnitude 11.3
Light Gathering Power 131x
Size Length 570mm, Outer Diameter 100mm
Weight 4.8kg(main body 3.4kg)
Finderscope 9x50mm(actual field of view 4.8deg)
Eyepiece Part Parts Attachment Size Screw-in : 42mm T-ring screw
Insert : 50.8mm(*1), 31.7mm(flip mirror attached)
Attached Eyepieces 31.7mm in diameter
NPL20mm(30x, actual field of view 100min)
NPL6mm(100x, actual field of view 30min)
Others Attachment 2 eyepieces, aluminum case for optical tube
Photography Enlarging, prime focus, compact digital camera(collimate) photography(*2)
Total Weight 10.5kg(w/o eyepiece)

Reflector (Newtonian) Set

  PORTA II R130Sf
Altazimuth Mount Refer to PORTA II Altazimuth Mount above
Optical Tubes Optical Type Reflector(Newtonian)
Objective Lens
(Primary Mirror)
Effective Diameter
130mm
Lens
Coating
Multi-coated
Focal Distance 650mm
Aperture Ratio(F) F5
Resolution 0.89s
Limiting Magnitude 12.3
Light Gathering Power 345x
Size Length 572mm, Outer Diameter 160mm
Weight 5.3kg(main body 4.0kg)
Finderscope 6x30mm(actual field of view 7deg)
Eyepiece Part Parts Attachment Size Screw-in : 42mm T-ring screw
Insert : 31.7mm
Attached Eyepieces 31.7mm in diameter
PL20mm(33x, actual field of view 89min)
PL6.3mm(103x, actual field of view 30min)
Others Attachment 2 eyepieces
Photography Enlarging, prime focus, compact digital camera(collimate) photography(*2)
Total Weight 11.0kg(w/o eyepiece)

Catadioptric-type Set

  PORTA II VMC110L
Equatorial Mount Refer to PORTA II Altazimuth Mount above
Optical Tube Optical Type Catadiptric(VMC)type
Objective Lens
(Primary Mirror)
Effective Diameter
110mm
Lens
Coating
Multi-coated
Focal Distance 1,035mm
Aperture Ratio(F) F9.4
Resolution 1.05s
Limiting Magnitude 12.0
Light Gathering Power 247x
Size Length 360mm, Outer Diameter 119mm
Weight 2.3kg(main body 2.1kg)
Finderscope XY Spot Finder(equal size)
Eyepiece Part Parts Attachment Size Screw-in : 42mm T-ring screw
Insert : 31.7mm(flip mirror attached)
Attached Eyepieces 31.7mm in diameter
NPL25mm(41x, field of view 73min)
NPL8mm(129x, field of view 23min)
Others Attachment 2 eyepieces
Photography Enlarging, prime focus, compact digital camera (collimate) photography(*2)
Total Weight 8.0kg(w/o eyepiece)