- Constructing the Delta Stage with transmission illumination
- Constructing the Delta Stage with reflection illumination

# Objective lens

- RMS threaded
- Correction: Plan
- Tube length: 160mm
- Magnification: 4x - 100x

Can be scavenged from old equipment, or obtained cheaply from AliExpress. We recommend going Plan or Semi-Plan corrected lenses at 40x, and definitely Plan corrected or better at 100x.