Four-channel WBVR photometer for bright stars
Four-channel WBVR photometer for bright stars | |
| Optical layout of the photometer. 1 — wheel with field apertures, 2 — Quazi-neutral beam-splitters unit, 3 — glass filter which forms photometric band for each channel, 4 — Fabry lenses, 5 — folding mirrors, 6 — PMT photocathodes, 7 — viewer of narrow field, consisting from moving prism, re-imaging symmetric objective and eyepiece, 8 — mirror of wide field viewer, 9 — cross-hairs and 10 — Kelner eyepiece. |
| Respose curves for the photometer. U, B and V Jhonson photometric pass-band are inicated by dashed lines. |