Optolong UBVRI Photometric Filter Set 2"

Optolong UBVRI Photometric Filter Set 2": measuring, not just making pretty pictures

Those who transition from astrophotography to science move into photometry: the precise measurement of star brightness. This set includes the five filters of the photometric standard system: U (ultraviolet), B (blue), V (visual green), R (red), and I (near-infrared).

Because the bands follow the globally used standard, your measurements are directly comparable to professional data. Think of light curves of variable stars, exoplanet transits, or tracking supernovae.

For the citizen scientist

With this set and a monochrome camera, you can provide measurements that are useful for international campaigns and observer networks. Educational institutions and observatories also use UBVRI sets for practicals and research.

Technology

Each filter consists of high-quality 1.85mm Schott glass, double-sided polished to lambda/4 with a polishing quality of 60/40. The multi-layer IBAD (ion beam assisted deposition) coatings are scratch-resistant, color-stable, and unaffected by temperature fluctuations.

Featured accessories

A five-position filter wheel accepts the complete set, allowing you to run measurement series without manual switching.

For whom yes and for whom no

• ✓ Variable star and exoplanet transit observers
• ✓ Observatories, societies, and educational institutions
• For those who want to create purely aesthetic astrophotos, an LRGB set is the right choice

Specifications

You can find more accessories for this merk at the Optolong merk page.