Highlights
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
46mm clear aperture at the H-alpha-filter entrance side - suitable for research grade SolarSpectrum H-alpha filters
Large working distance of 250mm for optimized focal length reduction with a telecompressor and suitable room for adapting a binocular viewer
Aplanatic, with 3x focal length extension to achieve a parallel f/30 beam in conjunction with ~f/10 optics systems – free of field curvtare
Primarily calculated and produced for H-alpha at 656,3 nm, delivering 99% Strehl (99% definition brightness )
Diffraction limited design also at 396 nm (CaK)
Specifications
| Manufacturer | Baader Planetarium |
|---|---|
| SKU (#) | 2459257 |
| EAN Code | 4047825008695 |
| Weight (kg) | 0.37 |
| Focal length extension | 3x |
| Usage | for H-alpha observation with SolarSpectrum filters |
| Inner Connection (lens sided) | Thread, T-2 (M42 x 0,75), 2" (50,8mm) |
| Outer Connection (lens sided) | Thread, 2" (50,8mm) |
| Outer Connection (eyepiece/-camera-sided) | Thread, T-2 (M42 x 0,75), 2" (50,8mm) |