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Select multiple items

William Optics Guidescope UniGuide 32mm Space Grey

William Optics

Guidescope UniGuide 32mm Space Grey

$ 208.00

ready for shipping in 3-5 weeks

DayStar QUARK Sodium D-Line

DayStar

QUARK Sodium D-Line

$ 1,850.00

ready for shipping in 3-6 months

DayStar Filters Energy Rejection Filter E-325F90

DayStar

Filters Energy Rejection Filter E-325F90

$ 1,030.00

ready for shipping in 3-6 months

DayStar Filters Energy Rejection Filter E-150N100

DayStar

Filters Energy Rejection Filter E-150N100

$ 1,020.00

ready for shipping in 3-6 months

DayStar Combo QUARK H-Alpha solar filter, for prominences

DayStar

Combo QUARK H-Alpha solar filter, for prominences

$ 1,850.00

ready for shipping in 3-6 months

$William Optics Apochromatic refractor AP 76/365 UltraCat 76 WIFD$

William Optics

Apochromatic refractor AP 76/365 UltraCat 76 WIFD

$ 3,000.00

ready for shipping in 24 h

$William Optics Apochromatic refractor AP 91/540 Space Gray OTA$

William Optics

Apochromatic refractor AP 91/540 Space Gray OTA

$ 2,770.00

ready for shipping in 3-5 weeks

William Optics Guidescope AC 50/200 RotoLock Gold OTA

William Optics

Guidescope AC 50/200 RotoLock Gold OTA

$ 266.00

ready for shipping in 24 h

DayStar Filters E-120N100 energy rejection filter

DayStar

Filters E-120N100 energy rejection filter

$ 1,020.00

ready for shipping in 3-6 months

William Optics Guidescope UniGuide 50mm Gold

William Optics

Guidescope UniGuide 50mm Gold

$ 254.00

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

$ 3,930.00

ready for shipping in 3-5 weeks

William Optics Focusing Mask Bahtinov 172-235mm

William Optics

Focusing Mask Bahtinov 172-235mm

$ 115.00

ready for shipping in 24 h

DayStar Quark Universal AC Power Supply

DayStar

Quark Universal AC Power Supply

$ 80.00

ready for shipping in 24 h

DayStar QUARK H-alpha filter Gemini

DayStar

QUARK H-alpha filter Gemini

$ 3,700.00

ready for shipping in 3-6 months

William Optics Adapter SCT connection for WO Diagonals

William Optics

Adapter SCT connection for WO Diagonals

$ 69.00

ready for shipping in 24 h

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

William Optics

Apochromatic refractor AP 81/559 ZenithStar 81 WIFD Red OTA

$ 1,850.00

ready for shipping in 3-5 weeks

$William Optics Apochromatic refractor AP 81/478 Gran Turismo 81 IV OTA$

William Optics

Apochromatic refractor AP 81/478 Gran Turismo 81 IV OTA

$ 2,080.00

ready for shipping in 24 h

DayStar Filters Energy Rejection Filter E-281F80

DayStar

Filters Energy Rejection Filter E-281F80

$ 810.00

ready for shipping in 3-6 months

$William Optics Apochromatic refractor AP 81/478 Gran Turismo 81 IV OTA$

William Optics

Apochromatic refractor AP 81/478 Gran Turismo 81 IV OTA

$ 2,080.00

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 Adaptors for Flattener 6A

William Optics

Adaptors for Flattener 6A

$ 115.00

Available on request

William Optics Adapter Rotolock Adaptors 2" 1.25" Red

William Optics

Adapter Rotolock Adaptors 2" 1.25" Red

$ 92.00

ready for shipping in 24 h

DayStar Filters Energy Rejection Filter E-110N75

DayStar

Filters Energy Rejection Filter E-110N75

$ 810.00

ready for shipping in 3-6 months

$William Optics Apochromatic refractor AP 73/430 Super ZenithStar 73 Gold OTA$

William Optics

Apochromatic refractor AP 73/430 Super ZenithStar 73 Gold OTA

$ 1,010.00

Product can be shipped as of 15.12.2025

Shelyak eShel Calibration unit

Shelyak

eShel Calibration unit

$ 6,300.00

ready for shipping in 1-2 weeks

DayStar Filters Energy Rejection Filter E-120N80

DayStar

Filters Energy Rejection Filter E-120N80

$ 810.00

ready for shipping in 3-6 months

DayStar Filters Energy Rejection Filter E-170N130

DayStar

Filters Energy Rejection Filter E-170N130

$ 1,380.00

ready for shipping in 3-6 months

William Optics Carry case ZS81/GT81/GTF81

William Optics

Carry case ZS81/GT81/GTF81

$ 115.00

ready for shipping in 24 h

Shelyak eShel injection unit f/9 50µm

Shelyak

eShel injection unit f/9 50µm

$ 4,890.00

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 Successfully Starting in Astronomical Spectroscopy

Shelyak

Successfully Starting in Astronomical Spectroscopy

$ 58.00

ready for shipping in 24 h

Shelyak Optical kit for Star'Ex HR spectrograph

Shelyak

Optical kit for Star'Ex HR spectrograph

$ 600.00

ready for shipping in 24 h

Shelyak Argon-Neon replacement lamps

Shelyak

Argon-Neon replacement lamps

$ 42.90

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 1-2 weeks

William Optics Flat6A III Special Edition FLT91

William Optics

Flat6A III Special Edition FLT91

$ 439.00

ready for shipping in 3-5 weeks

William Optics Flattener Flat68III

William Optics

Flattener Flat68III

$ 1,140.00

ready for shipping in 3-5 weeks