• Wider field — 1624mm vs 2415mm focal length
• Faster optics at f/8 vs f/11.5
• Larger image circle (42mm) — supports bigger sensors
• Lighter (10kg vs 15.5kg) — easier to travel with

• Tighter framing — 2415mm vs 1624mm focal length

• Small galaxies, planetary nebulae, lunar & planetary detail
• High-resolution long-exposure work
• Faint-object imaging under dark skies
• Full-frame astro cameras and DSLRs

• Small galaxies, planetary nebulae, lunar & planetary detail
• High-resolution long-exposure work
• Faint-object imaging under dark skies

• With Full-frame (36×24mm, 3.76µm)
  FOV: 1.27° × 0.85°Scale: 0.48"/px
• With APS-C (23.5×15.7mm, 3.76µm)
  FOV: 0.83° × 0.55°Scale: 0.48"/px
• With IMX533 square (11.3×11.3mm, 3.76µm)
  FOV: 0.40° × 0.40°Scale: 0.48"/px

• With Full-frame (36×24mm, 3.76µm)
  FOV: 0.85° × 0.57°Scale: 0.32"/px
• With APS-C (23.5×15.7mm, 3.76µm)
  FOV: 0.56° × 0.37°Scale: 0.32"/px
• With IMX533 square (11.3×11.3mm, 3.76µm)
  FOV: 0.27° × 0.27°Scale: 0.32"/px

Best suited for experienced imagers chasing detail running a backyard imaging setup.

Best suited for experienced imagers chasing detail running a permanent observatory setup.