| Brand and Model: | Astro-Physics SPL 4mm |
| Price ($USD): | 245 |
| Type: | Super Planetary |
| Focal Length: | 4 mm |
| Barrel Size: | 1.25 |
| Apparent FOV: | 42.0 degrees |
| Field Stop Dia.: | 0.0 mm |
| Eye Relief: | 5 mm |
| Elements: | 3 |
| Weight (lbs): | |
| Description: | Features:
Field size - 3.9mm
Number of elements - 3
Barrel - 1.25" polished stainless steel
Apparent field - 42 degrees
Eye relief - varies from 125% (4mm) to 140% (8-12mm) of the focal length
Operating range - from F4 upward
Broadband multi-coated on all surfaces
Top - conical non-metallic surface to resist fogging and prevent freezing to skin |
Up One Level
