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JMI Telescopes 12" Parabolic Mirror Set

B&H # JMMIRSET1250 Mfr # MIRSET1250
Usually ships in 7-10 business days

Availability Details

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This is a Special order item. Est. arrival at B&H is 7-10 business days (subject to availability). Your order will be charged at time of shipment.
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PayPal orders will be charged when the order is placed.
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International orders will be charged when the order is placed.

Free Standard Shipping
Not eligible for free Expedited Shipping
You Pay: $589.95
Product Highlights
  • 12" Primary Aperture
  • 70mm Secondary Aperture
  • 1500mm Focal Length
  • SiO2 Protective Coating
  • Aluminum Reflective Coating
  • Diffraction Limited BK7 Glass
  • Approximately 93% Reflectivity
  • 1/16 Wave RMS Minimum

The 12" Parabolic Mirror Set from JMI Telescopes is a primary and secondary mirror set for do-it-yourself telescope projects. Both elements have been precisely designed and engineered to meet exacting specifications at the Guan Sheng Optical factory. The primary and secondary mirrors are constructed of diffraction limited BK7 glass and feature an aluminum reflective coating and a SiO2 protective coating.

BK7 Glass
BK7 is a barium borosilicate optical glass known for its high transmission and clean, clear appearance.
Primary / Secondary Set
This mirror set includes a 12" primary mirror and 70mm secondary mirror, delivering a 1500mm focal length and f/5 light gathering ability.
Aperture Primary: 12" / 305 mm (nominal); 11.97" / 304 mm (actual)

Secondary: 2.75" / 70 mm

Focal Length 1500 mm
Focal Ratio f/5
Thickness 35 mm (primary)
Weight Primary: 14.3 lb (6.5 kg); Secondary: 5.6 oz (159 g)

Cleaning and Anti Fog

Show more >
Pearstone -  Microfiber Cleaning Cloth, 18% Gray (7 x 7.9")
  • You Pay: $4.99
 

System Enhancements

JMI Telescopes -  Primary Mirror Center Spot for 12"/16" GSO Mirrors
  • You Pay: $19.00
Usually ships in 7-10 business days i This is a Special order item. Est. arrival at B&H is 7-10 business days (subject to availability). Your order will be charged at time of shipment.
 
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