Our top offers

ZWO Seestar S50 Pro Smart Telescope (50/260mm + 3.4/6mm)

Introductory price until 15 September 2026
Wide-angle lens

899,00 EUR RRP 999,00 EUR you save 10% (100,00 EUR) Valid until 15.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : Please ask for delivery time

Baader 7.5 nm Solar Continuum 2" Filter (540 nm)

For solar work use only with pre-filter
Boosts contrast and cuts atmospheric turbulence (in combination with white-light solar...

178,20 EUR RRP 198,00 EUR you save 10% (19,80 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 1-2 days

Baader 7.5 nm Solar Continuum 1¼" Filter (540 nm)

For solar work use only with pre-filter
Boosts contrast and cuts atmospheric turbulence (in combination with white-light solar...

106,20 EUR RRP 118,00 EUR you save 10% (11,80 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : Please ask for delivery time

Baader O-III 6.5nm Narrowband f/2 Highspeed Filter 47.4mm - CMOS optimized

Ø 47.4 x 2 mm (2" w/o cell) 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster 2"...

205,20 EUR RRP 228,00 EUR you save 10% (22,80 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 47.4mm - CMOS optimized

Ø 47.4 x 2 mm (2" w/o cell) 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster 2" Filter removed from filter...

207,00 EUR RRP 230,00 EUR you save 10% (23,00 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader Calcium GEN-II 1¼"

For solar work use only with pre-filter
Calcium K-Filter
For photographic imaging...

256,50 EUR RRP 285,00 EUR you save 10% (28,50 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha / O-III / S-II 6.5nm Narrowband f/2 Highspeed Filter-Set 2" - CMOS optimized

Ø 2" x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

666,90 EUR RRP 741,00 EUR you save 10% (74,10 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha / O-III / S-II 6.5nm Narrowband f/2 Highspeed Filter-Set 36 mm - CMOS optimized

Ø 36 mm x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

478,80 EUR RRP 532,00 EUR you save 10% (53,20 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha / O-III / S-II 6.5nm Narrowband f/2 Highspeed Filter-Set 31 mm - CMOS optimized

Ø 31 mm x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

430,20 EUR RRP 478,00 EUR you save 10% (47,80 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha / O-III / S-II 6.5nm Narrowband f/2 Highspeed Filter-Set 50.4 mm - CMOS optimized

Ø 50.4 mm x 3 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

696,60 EUR RRP 774,00 EUR you save 10% (77,40 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha / O-III / S-II 6.5nm Narrowband f/2 Highspeed Filter-Set 65 x 65 mm - CMOS optimized

Ø 65 x 65 mm x 3 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

995,40 EUR RRP 1.106,00 EUR you save 10% (110,60 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha / O-III / S-II 6.5nm Narrowband f/2 Highspeed Filter-Set 50 x 50 mm - CMOS optimized

Ø 50 x 50 mm x 3 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

801,90 EUR RRP 891,00 EUR you save 10% (89,10 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 31 mm - CMOS optimized

Ø 31 mm x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

150,30 EUR RRP 167,00 EUR you save 10% (16,70 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 1¼" - CMOS optimized

Ø 1.25" x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

144,00 EUR RRP 160,00 EUR you save 10% (16,00 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 2" - CMOS optimized

Ø 2" x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

236,70 EUR RRP 263,00 EUR you save 10% (26,30 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 36 mm - CMOS optimized

Ø 36 mm x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

169,20 EUR RRP 188,00 EUR you save 10% (18,80 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 50.4 mm - CMOS optimized

Ø 50.4 mm x 3 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

245,70 EUR RRP 273,00 EUR you save 10% (27,30 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 50x50 mm - CMOS optimized

Ø 50 x 50 mm x 3 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

285,30 EUR RRP 317,00 EUR you save 10% (31,70 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader H-alpha 6.5nm Narrowband f/2 Highspeed Filter 65x65 mm - CMOS optimized

Ø 65 x 65 mm x 3 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special...

352,80 EUR RRP 392,00 EUR you save 10% (39,20 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader O-III 6.5nm Narrowband f/2 Highspeed Filter 1¼" - CMOS optimized

Ø 1.25" x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

143,10 EUR RRP 159,00 EUR you save 10% (15,90 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader O-III 6.5nm Narrowband f/2 Highspeed Filter 2" - CMOS optimized

Ø 2" x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

234,90 EUR RRP 261,00 EUR you save 10% (26,10 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader O-III 6.5nm Narrowband f/2 Highspeed Filter 31 mm - CMOS optimized

Ø 31 mm x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

152,10 EUR RRP 169,00 EUR you save 10% (16,90 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader S-II 6.5nm Narrowband f/2 Highspeed Filter 50x50 mm - CMOS optimized

Ø 50 x 50 mm x 3 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

279,90 EUR RRP 311,00 EUR you save 10% (31,10 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days

Baader S-II 6.5nm Narrowband f/2 Highspeed Filter 36 mm - CMOS optimized

Ø 36 mm x 2 mm 6.5 nm FWHM Recommended for extremely fast optical systems from f/3.4 and faster Specially designed for the special filter...

168,30 EUR RRP 187,00 EUR you save 10% (18,70 EUR) Valid until 14.09.2026

incl. 19 % VAT excl. shipping costs

delivery time : 3-5 days