WILLIAM OPTICS
Testar Australia is an authorized William Optics dealer. William Optics has earned a reputation over the last two decades for producing high quality yet affordable telescopes and accessories. Their refractors are made from precision CNC-machined and anodized aluminium and feature Ohara FPL-53 synthetic fluorite glass for excellent aberration correction.
Up to 5% offWILLIAM OPTICS MINICAT 51 WIFD f/3.5 REFRACTOR
In stockSale price $1,479.00AUD Regular price $1,549.00Unit price /Unavailable
6% offWILLIAM OPTICS REDCAT 51-III WIFD f/4.9 REFRACTOR
In stockSale price $1,319.00AUD Regular price $1,399.00Unit price /Unavailable
5% offWILLIAM OPTICS REDCAT 61 WIFD F/4.9 APO REFRACTOR
Very low stock (1 unit)Sale price $1,809.00AUD Regular price $1,899.00Unit price /Unavailable
4% offWILLIAM OPTICS ULTRA-CAT 56 f/4.8 REFRACTOR
Very low stock (1 unit)Sale price $2,309.00AUD Regular price $2,399.00Unit price /Unavailable
5% offWILLIAM OPTICS ULTRA-CAT 76 f/4.8 REFRACTOR
Very low stock (1 unit)Sale price $3,789.00AUD Regular price $3,999.00Unit price /Unavailable
Up to 5% offWILLIAM OPTICS REDCAT 91 WIFD f/4.9 REFRACTOR
Very low stock (1 unit)Sale price $4,289.00AUD Regular price $4,499.00Unit price /Unavailable
4% offWILLIAM OPTICS ULTRA-CAT 108 f/4.8 REFRACTOR
In stockSale price $6,269.00AUD Regular price $6,499.00Unit price /Unavailable
WILLIAM OPTICS ULTRA-CAT 131 f/4.9 REFRACTOR
BackorderedRegular price $8,899.00AUDUnit price /Unavailable
Sold out24% offZENITHSTAR 61 II F/5.9 APO DOUBLET
Sale price $989.00AUD Regular price $1,299.00Unit price /Unavailable
ZENITHSTAR 81 WIFD F/6.9 APO DOUBLET
BackorderedRegular price $1,799.00AUDUnit price /Unavailable
GRAN TURISMO 81 WIFD F/5.9 APO TRIPLET
BackorderedRegular price $3,299.00AUDUnit price /Unavailable
3% offWILLIAM OPTICS PLEIADES 68 F/3.8 ASTROGRAPH
BackorderedSale price $3,299.00AUD Regular price $3,399.00Unit price /Unavailable
4% offWILLIAM OPTICS PLEIADES 111 F/4.8 ASTROGRAPH
BackorderedSale price $6,269.00AUD Regular price $6,499.00Unit price /Unavailable
1% offWILLIAM OPTICS PLEIADES 181 F/5.5 ASTROGRAPH
BackorderedSale price $29,699.00AUD Regular price $29,999.00Unit price /Unavailable
Up to 8% offFLUOROSTAR 120 F/6.5 APO TRIPLET
BackorderedSale price From $5,439.00AUD Regular price $5,899.00Unit price /Unavailable
Up to 10% offFLUOROSTAR 132 F/6.9 APO TRIPLET
BackorderedSale price From $7,219.00AUD Regular price $7,999.00Unit price /Unavailable
Up to 7% offFLUOROSTAR 156 F/7.8 APO TRIPLET
BackorderedSale price $13,029.00AUD Regular price $13,999.00Unit price /Unavailable
Up to 5% offIn stockSale price $189.00AUD Regular price $199.00Unit price /Unavailable
Up to 3% offIn stockSale price $279.00AUD Regular price $289.00Unit price /Unavailable
5% offFLAT6AIII 0.8x REDUCER FOR GT71, GT81, Z81, Z103
BackorderedSale price $379.00AUD Regular price $399.00Unit price /Unavailable
6% offFLAT68III 1x FLATTENER FOR FLT91, FLT120, FLT132, FLT156
BackorderedSale price $1,079.00AUD Regular price $1,149.00Unit price /Unavailable
9% offFLAT7A 0.8x REDUCER FOR FLT120, FLT132, FLT156
BackorderedSale price $1,089.00AUD Regular price $1,199.00Unit price /Unavailable
8% offFLAT8 0.72x REDUCER FOR GT102, FLT132, FLT156
BackorderedSale price $1,329.00AUD Regular price $1,449.00Unit price /Unavailable
5% offFLAT73A 1x FLATTENER FOR ZENITHSTAR 73
BackorderedSale price $379.00AUD Regular price $399.00Unit price /Unavailable
10% offWILLIAM OPTICS DR FLAT MASTER 0.8x REDUCER FOR GSO RC
BackorderedSale price $1,389.00AUD Regular price $1,550.00Unit price /Unavailable
WILLIAM OPTICS FLATTENER ADAPTER FOR FLT91, FLT120
BackorderedRegular price $79.00AUDUnit price /Unavailable
Up to 11% offWILLIAM OPTICS DSD VIXEN DOVETAIL 245mm
In stockSale price $79.00AUD Regular price $89.00Unit price /Unavailable
Up to 5% offWILLIAM OPTICS LOSMANDY DOVETAIL 400mm
BackorderedSale price $189.00AUD Regular price $199.00Unit price /Unavailable
CAMERA ANGLE ROTATOR FOR 2.5" M63 FOCUSER
Very low stock (1 unit)Regular price $189.00AUDUnit price /Unavailable
7% off3" CAMERA ANGLE ROTATOR FOR M92 FOCUSER
In stockSale price $279.00AUD Regular price $299.00Unit price /Unavailable
11% offDURA-BRIGHT 2" DIELECTRIC 90° DIAGONAL
In stockSale price $249.00AUD Regular price $279.00Unit price /Unavailable
10% offDURA-BRIGHT 1.25" DIELECTRIC 90° DIAGONAL
Very low stock (1 unit)Sale price $179.00AUD Regular price $199.00Unit price /Unavailable
6% offWILLIAM OPTICS 1.25" 90° ERECTING PRISM
Very low stock (1 unit)Sale price $159.00AUD Regular price $169.00Unit price /Unavailable
6% offWILLIAM OPTICS COPPER M48 T-RING FOR CANON
In stockSale price $149.00AUD Regular price $159.00Unit price /Unavailable
6% offWILLIAM OPTICS COPPER M48 T-RING FOR NIKON
Very low stock (1 unit)Sale price $149.00AUD Regular price $159.00Unit price /Unavailable
13% offWILLIAM OPTICS M48 T-RING FOR FUJI X-MOUNT
Very low stock (1 unit)Sale price $69.00AUD Regular price $79.00Unit price /Unavailable
13% offWILLIAM OPTICS M48 T-RING FOR SONY E-MOUNT
In stockSale price $69.00AUD Regular price $79.00Unit price /Unavailable
Sold out10% offWILLIAM OPTICS M48 T-RING FOR CANON EOS-R
Sale price $89.00AUD Regular price $99.00Unit price /Unavailable
10% offWILLIAM OPTICS M48 T-RING FOR NIKON Z
Very low stock (1 unit)Sale price $89.00AUD Regular price $99.00Unit price /Unavailable
13% offWILLIAM OPTICS M48 T-RING FOR OLYMPUS MICRO 4/3
In stockSale price $69.00AUD Regular price $79.00Unit price /Unavailable
Sold outWILLIAM OPTICS M48 T-RING FOR PENTAX K
Regular price $59.00AUDUnit price /Unavailable
