Updated on: 19 Apr 2019

1.25" round mounted Ha 3nm filter . . . HK$4,390 (accepting order 接受订货)

1.25" round mounted SII 3nm filter . . . HK$4,390 (accepting order 接受订货)

1.25" round mounted OIII 3nm filter . . . HK$4,390 (accepting order 接受订货)

1.25" round mounted Ha 5nm filter . . . HK$2,960 (in stock 現貨)

1.25" round mounted SII 5nm filter . . . HK$2,960 (in stock 現貨)

1.25" round mounted OIII 5nm filter . . . HK$2,960 (in stock 現貨)

1.25" round mounted Tru-Balance Gen 2 E-series LRGB filters . . . HK$4,270 (in stock 現貨)

1.25" round mounted Tru-Balance Gen 2 I-series LRGB filters . . . HK$4,270 (accepting order 接受订货)

36mm round unmounted Ha 3nm filter . . . HK$5,830 (accepting order 接受订货)

36mm round unmounted SII 3nm filter . . . HK$5,830 (accepting order 接受订货) 

36mm round unmounted OIII 3nm filter . . . HK$5,830 (accepting order 接受订货)

36mm round unmounted Ha 5nm filter . . . HK$3,900 (in stock 現貨)

36mm round unmounted SII 5nm filter . . . HK$3,900 (in stock 現貨)

36mm round unmounted OIII 5nm filter . . . HK$3,900 (in stock 現貨)

36mm round unmounted Tru-Balance Gen 2 E-series LRGB filters . . . HK$6,160 (back ordered 訂貨中)

36mm round unmounted Tru-Balance Gen 2 I-series LRGB filters . . . HK$6,160 (accepting order 接受订货)

Ø49.7mm unmounted Ha 3nm filter . . . HK$8,930 (accepting order 接受订货)

Ø49.7mm unmounted SII 3nm filter . . . HK$8,930 (accepting order 接受订货) 

Ø49.7mm unmounted OIII 3nm filter . . . HK$8,930 (accepting order 接受订货)

Ø49.7mm unmounted Ha 5nm filter . . . HK$6,780 (in stock 現貨)

Ø49.7mm unmounted SII 5nm filter . . . HK$6,780 (in stock 現貨)

Ø49.7mm unmounted OIII 5nm filter . . . HK$6,780 (in stock 現貨)

Ø49.7mm unmounted Tru-Balance Gen 2 E-series LRGB filters . . . HK$9,260 (back ordered 訂貨中)

Ø49.7mm unmounted Tru-Balance Gen 2 I-series LRGB filters . . . HK$9,260 (in stock 現貨)

49.7mm square Ha 3nm filter . . . HK$6,780 (in stock 現貨)

49.7mm square SII 3nm filter . . . HK$6,780 (in stock 現貨)

49.7mm square OIII 3nm filter . . . HK$6,780 (in stock 現貨)

49.7mm square Johnson/Cousins UV filter . . . HK$4,320 (in stock 現貨)

49.7mm square Johnson/Cousins B filter . . . HK$4,320 (in stock 現貨)

49.7mm square Johnson/Cousins V filter . . . HK$4,320 (in stock 現貨)

49.7mm square Johnson/Cousins Rc filter . . . HK$4,320 (in stock 現貨)

49.7mm square Johnson/Cousins Ic filter . . . HK$4,320 (in stock 現貨)

MegaMOAG 4"-3" standalone off-axis guider . . . HK$7,030 (in stock 現貨)

* Please ask for all other Astrodon items