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Select multiple items

William Optics Vixen-Style 290mm Prism Rail

William Optics

Vixen-Style 290mm Prism Rail

$ 161.00

ready for shipping in 24 h

Shelyak eShel injection unit f/9 50µm

Shelyak

eShel injection unit f/9 50µm

$ 4,870.00

ready for shipping in 1-2 weeks

Shelyak Optical kit for Star'Ex HR spectrograph

Shelyak

Optical kit for Star'Ex HR spectrograph

$ 600.00

ready for shipping in 1-2 weeks

Shelyak Star'Ex 14-20-26-32 µm slit + 25 µm hole (GEN2)

Shelyak

Star'Ex 14-20-26-32 µm slit + 25 µm hole (GEN2)

$ 100.00

ready for shipping in 24 h

Shelyak SLITS 19/50/75/100 MM FOR LISA & LHIRES III

Shelyak

SLITS 19/50/75/100 MM FOR LISA & LHIRES III

$ 264.00

ready for shipping in 1-2 weeks

William Optics Rotator Rotolock Visual Back 3.5

William Optics

Rotator Rotolock Visual Back 3.5

$ 299.00

Sale price:

ready for shipping in 24 h

William Optics Flat6A III Special Edition FLT91

William Optics

Flat6A III Special Edition FLT91

$ 495.00

ready for shipping in 3-5 weeks

$William Optics Apochromatic refractor AP 91/448 RedCat 91 WIFD OTA$

William Optics

Apochromatic refractor AP 91/448 RedCat 91 WIFD OTA

$ 3,680.00

ready for shipping in 3-5 weeks

$William Optics Apochromatic refractor AP 81/559 ZenithStar 81 WIFD Red OTA$

William Optics

Apochromatic refractor AP 81/559 ZenithStar 81 WIFD Red OTA

$ 1,720.00

ready for shipping in 3-5 weeks

$William Optics Apochromatic refractor AP 132/925 FluoroStar Red OTA$

William Optics

Apochromatic refractor AP 132/925 FluoroStar Red OTA

$ 6,100.00

ready for shipping in 3-5 weeks

Unihedron Sky Quality Meter Window mount

Unihedron

Sky Quality Meter Window mount

$ 40.90

ready for shipping in 3-5 weeks

Shelyak Power supply 12V/3A

Shelyak

Power supply 12V/3A

$ 34.90

ready for shipping in 1-2 weeks

Unihedron Photometer Solar DL Kit

Unihedron

Photometer Solar DL Kit

$ 610.00

ready for shipping in 3-5 weeks

William Optics Focusing Mask Bahtinov 172-235mm

William Optics

Focusing Mask Bahtinov 172-235mm

$ 161.00

ready for shipping in 24 h

William Optics Guidescope 50mm f/4.0 RotoLock

William Optics

Guidescope 50mm f/4.0 RotoLock

$ 230.00

Sale price:

ready for shipping in 24 h

$William Optics Apochromatic refractor AP 81/559 ZenithStar 81 WIFD Gold OTA$

William Optics

Apochromatic refractor AP 81/559 ZenithStar 81 WIFD Gold OTA

$ 1,490.00

ready for shipping in 3-5 weeks

William Optics Tube clamps Mounting Ring and CAT Handle Bar Kit for ZenithStar 61 version I

William Optics

Tube clamps Mounting Ring and CAT Handle Bar Kit for ZenithStar 61 version I

$ 138.00

ready for shipping in 3-5 weeks

William Optics Carry case ZenithStar 71 & 73

William Optics

Carry case ZenithStar 71 & 73

$ 115.00

ready for shipping in 24 h

William Optics Rotator M92

William Optics

Rotator M92

$ 287.00

Sale price:

ready for shipping in 24 h

Shelyak 150 gr/mm grating module

Shelyak

150 gr/mm grating module

$ 770.00

ready for shipping in 1-2 weeks

William Optics Camera adaptor M48/Pentax K

William Optics

Camera adaptor M48/Pentax K

$ 68.00

ready for shipping in 1-2 weeks

William Optics 2x Barlow lense for 1.25'' Binoviewers

William Optics

2x Barlow lense for 1.25'' Binoviewers

$ 80.00

ready for shipping in 3-5 weeks

Shelyak Sol'Ex / Star'Ex HR expansion set

Shelyak

Sol'Ex / Star'Ex HR expansion set

$ 195.00

ready for shipping in 1-2 weeks

Unihedron Sky Quality Meter Solar Charger

Unihedron

Sky Quality Meter Solar Charger

$ 161.00

ready for shipping in 3-5 weeks

William Optics Expandable 1:10 Micro gear for Synta focuser

William Optics

Expandable 1:10 Micro gear for Synta focuser

$ 218.00

ready for shipping in 24 h

William Optics Carry case ZS81/GT81/GTF81

William Optics

Carry case ZS81/GT81/GTF81

$ 115.00

ready for shipping in 24 h

Shelyak Eyepiece holder for Alpy guiding

Shelyak

Eyepiece holder for Alpy guiding

$ 391.00

ready for shipping in 1-2 weeks

Shelyak Spectroscope Alpy 200

Shelyak

Spectroscope Alpy 200

$ 1,070.00

ready for shipping in 1-2 weeks

Shelyak Thorium-Argon-Bulb

Shelyak

Thorium-Argon-Bulb

$ 1,160.00

ready for shipping in 1-2 weeks

William Optics Rotator Rotolock Visual Back 3.5

William Optics

Rotator Rotolock Visual Back 3.5

$ 299.00

ready for shipping in 3-5 weeks

William Optics Rotator Rotolock Visual Back 3.5

William Optics

Rotator Rotolock Visual Back 3.5

$ 299.00

ready for shipping in 3-5 weeks

Shelyak Reflective Standard SLIT 15/19/23/35 LISA & LHIRES III

Shelyak

Reflective Standard SLIT 15/19/23/35 LISA & LHIRES III

$ 247.00

ready for shipping in 1-2 weeks

William Optics Guidescope Guide Star Apo 61

William Optics

Guidescope Guide Star Apo 61

$ 700.00

ready for shipping in 3-5 weeks

Shelyak Argon-Neon replacement lamps

Shelyak

Argon-Neon replacement lamps

$ 42.90

Product can be shipped as of 01.05.2026

Shelyak LISA near-IR kit

Shelyak

LISA near-IR kit

$ 950.00

ready for shipping in 1-2 weeks

Shelyak 1800 gr/mm grating module

Shelyak

1800 gr/mm grating module

$ 810.00

ready for shipping in 1-2 weeks