Lunt LS50THa H-alpha solar telescope, B400 PT The LS50THa is Lunt's most popular dedicated hydrogen-alpha telescope. Its internal etalon is pressure-tuned (Doppler True), shifting the bandpass smoothly and uniformly across the field so features can be scanned through the H-alpha line. An integrated clamshell base takes a Vixen dovetail, and the LS50C…
Manufacturer model: Lunt LS50THa H-alpha solar telescope, B400 PT · Specifications checked against manufacturer data on 2026-11-03
The LS50THa is Lunt's most popular dedicated hydrogen-alpha telescope. Its internal etalon is pressure-tuned (Doppler True), shifting the bandpass smoothly and uniformly across the field so features can be scanned through the H-alpha line. An integrated clamshell base takes a Vixen dovetail, and the LS50C front filter adds double stacking.
Safety
Always use the telescope with its Lunt blocking filter in place; it is a dedicated solar instrument in H-alpha configuration.
Specifications
Telescope type
Dedicated H-alpha (daytime solar use only)
Aperture
50 mm, unobstructed
Focal length
350 mm
Focal ratio
f/7
Objective
Custom doublet optimised at 656 nm, ion-assisted narrowband AR
Lunt LS50THa H-alpha solar telescope, B400 PT The LS50THa is Lunt's most popular dedicated hydrogen-alpha telescope. Its internal etalon is pressure-tuned (Doppler True), shifting the bandpass smoothly and uniformly across the field so features can be scanned through the H-alpha line. An integrated clamshell base takes a Vixen dovetail, and the LS50C…
Manufacturer model: Lunt LS50THa H-alpha solar telescope, B400 PT · Specifications checked against manufacturer data on 2026-11-03
