© 2023 Baader Planetarium GmbH
11
2" Research Grade TZ-3 Telecentric System
# 2459257
• Research Grade Telecentric Unit, featuring an oversized
pick up expanding lens set and 2" (50.8mm) threads on
both sides
• T-2 Adapter and 2" m/f inverter ring are both included as
standard accessories
• 46 mm clear aperture at the H-alpha-filter entrance side
– suitable for research grade SolarSpectrum H-alpha filters
• Large working distance of 250 mm for optimized focal length reduction with a tele-
compressor and suitable room for adapting a binocular viewer
• Aplanatic, with 3x focal length extension to achieve a parallel f/30 beam in conjunc-
tion with ~f/10 optics systems – free of field curvtare
• The original focus point of the telescope is ~86 mm behind the end of the telecen-
tric system
• Primarily calculated and produced for H-alpha at 656,3 nm, delivering 99% Strehl
(definition brightness) depending on the used telescope system
• Diffraction limited design with about 80% Strehl also at 396 nm (CaK)
Telecentric System TZ-4
# 2459256
• Telecentric with 2" outer diameter and T-2 threads on both
sides
• Aplanatic, with 4x focal length extension to achieve a parallel
f/30 beam in conjunction with ~f/7,5 optics systems – free of
field curvature
• Primarily calculated and produced for H-alpha at 656,3 nm,
delivering maximum Strehl (definition brightness)
• Working distance to camera sensor: 230 mm
• The original focus point of the telescope is ~93 mm behind
the end of the telecentric system
