Esprit 150ED Super APO Triplet 

    The 5-element 80/100/120/150 ED Super APO Triplet refractors are identical to the triplet ED120 and triplet ED150 refractors, but they have in addition a doublet field flattener lens to get a 44mm diameter flat field without aberration and distortion.

    Their M48x0.75 adapter for cameras assure larger clear aperture than the classic M42x0.75 adapter (also called T adapter) and thus eliminates any vignetting (loss of light in the edges) on big full frame cameras.

Features:

• Premium optical materials
• Short focal length and full frame corrected focal plane
• Excellent field flatness
• Precision linear power focuser is standard
• Metallic high-transmission lens coatings
• Light-baffled optical systems
• Telescope tube attachment hardware