William Optics
Apochromatic refractor AP 81/478 Gran Turismo 81 IV OTA Guidescope-Set
RRP:
$ 2,570.00
Our price:
$ 2,070.00
ready for shipping in 24
h
William Optics
Apochromatic refractor AP 71/350 RedCat 71 OTA
$ 2,340.00
ready for shipping in 3-5
weeks
William Optics
Focusing Mask Bahtinov 172-235mm
$ 163.00
ready for shipping in 3-5
weeks
DayStar
Filters Energy Rejection Filter E-170N130
$ 1,400.00
ready for shipping in 3-6
months
William Optics
Guidescope UniGuide 32mm Space Grey
$ 187.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 81/478 Gran Turismo 81 IV OTA
$ 1,980.00
ready for shipping in 24
h
DayStar
Tilter Interference Eliminator T2
$ 116.00
ready for shipping in 3-5
weeks
Shelyak
eShel injection unit f/9 50µm
$ 4,940.00
ready for shipping in 1-2
weeks
Shelyak
Optical kit for Star'Ex HR spectrograph
$ 610.00
ready for shipping in 1-2
weeks
William Optics
Flattener Flat73A for ZenithStar 73
$ 339.00
ready for shipping in 24
h
DayStar
Quark USB Power Extension Cable
$ 35.90
ready for shipping in 24
h
DayStar
22.4 Amp hour battery pack for the Quark
$ 163.00
ready for shipping in 3-6
months
Shelyak
Star'Ex 14-20-26-32 µm slit + 25 µm hole (GEN2)
$ 101.00
ready for shipping in 24
h
Shelyak
SLITS 19/50/75/100 MM FOR LISA & LHIRES III
$ 269.00
ready for shipping in 1-2
weeks
William Optics
Flat6A III Special Edition FLT91
$ 510.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 91/448 RedCat 91 WIFD OTA
$ 3,740.00
ready for shipping in 3-5
weeks
DayStar
Filters Energy Rejection Filter SC 8" (E-244F63)
$ 820.00
ready for shipping in 3-6
months
DayStar
Quark Universal AC Power Supply
$ 81.00
ready for shipping in 24
h
DayStar
Blocking Filters UV/IR 2"
$ 198.00
ready for shipping in 3-6
months
William Optics
Apochromatic refractor AP 81/559 ZenithStar 81 WIFD Red OTA
$ 1,750.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 132/925 FluoroStar Red OTA
$ 6,200.00
ready for shipping in 3-5
weeks
Unihedron
Sky Quality Meter Window mount
$ 40.90
ready for shipping in 3-5
weeks
Shelyak
Power supply 12V/3A
$ 35.90
ready for shipping in 1-2
weeks
William Optics
Prism rail, Vixen style / Arca-Swiss 110 mm
$ 81.00
ready for shipping in 24
h
Unihedron
Photometer Solar DL Kit
$ 620.00
ready for shipping in 3-5
weeks
William Optics
Guidescope 50mm f/4.0 RotoLock
$ 234.00
Sale price:
$ 186.20
ready for shipping in 24
h
DayStar
Imaging Flat Cap FC110
$ 140.00
ready for shipping in 6-10
weeks
DayStar
Imaging Flat Cap FC120
$ 140.00
Product can be shipped as of 15.05.2026
William Optics
Apochromatic refractor AP 81/559 ZenithStar 81 WIFD Gold OTA
$ 1,520.00
ready for shipping in 3-5
weeks
DayStar
Adapter Eyepiece Holder for Quark 2"
$ 116.00
ready for shipping in 3-6
months
William Optics
Tube clamps Mounting Ring and CAT Handle Bar Kit for ZenithStar 61 version I
$ 140.00
ready for shipping in 3-5
weeks
William Optics
Carry case ZenithStar 71 & 73
$ 116.00
ready for shipping in 24
h
DayStar
Imaging Flat Cap FC180
$ 152.00
ready for shipping in 6-10
weeks
William Optics
Rotator M92
$ 292.00
Sale price:
$ 203.77
ready for shipping in 24
h
DayStar
Imaging Flat Cap FC150
$ 140.00
ready for shipping in 6-10
weeks
William Optics
Camera adaptor M48/Pentax K
$ 70.00
ready for shipping in 1-2
weeks