Updated on: 27 Jul 2021

 

New CMOS-Optimized (ultra) narrowband and highspeed filters

* Narrow band, CMOS-optimized for f/3.5 to F/10

* f/2 Highspeed, CMOS-optimized for f/1.8 to f/3.4

 

CCD narrowband filters sales, while stocks last (25% off) 

 

*** Narrowband ***

H-alpha narrowband CMOS-optimized filter (6.5nm)

1.25", #2961100, ... HK$1,100 (in stock 現貨)

31mm, #2961101, ... HK$1,150 (pre-order 接受預訂)

36mm, #2961102, ... HK$1,310 (in stock 現貨)

2", #2961103, ... HK$1,870 (in stock 現貨)

∅50.4mm, #2961104, ... HK$1,950 (in stock 現貨)

50x50mm, #2961105, ... HK$2,230 (pre-order 接受預訂)

65x65mm, #2961106, ... HK$2,870 (pre-order 接受預訂)

  

H-alpha f/2 highspeed CMOS-optimized filter (6.5nm)

1.25", #2961150, ... HK$1,180 (in stock 現貨)

31mm, #2961151, ... HK$1,230 (pre-order 接受預訂)

36mm, #2961152, ... HK$1,390 (in stock 現貨)

2", #2961153, ... HK$1,950 (in stock 現貨)

∅50.4mm, #2961154, ... HK$2,020 (in stock 現貨)

50x50mm, #2961155, ... HK$2,350 (pre-order 接受預訂)

65x65mm, #2961156, ... HK$2,910 (pre-order 接受預訂)

 

S-II narrowband CMOS-optimized filter (6.5nm)

1.25", #2961250, ... HK$1,070 (in stock 現貨)

31mm, #2961251, ... HK$1,130 (pre-order 接受預訂)

36mm, #2961252, ... HK$1,300 (in stock 現貨)

2", #2961253, ... HK$1,820 (in stock 現貨)

∅50.4mm, #2961254, ... HK$2,170 (in stock 現貨)

50x50mm, #2961255, ... HK$2,260 (pre-order 接受預訂)

65x65mm, #2961256, ... HK$2,810 (accepting order 接受預訂)

 

S-II f/2 highspeed CMOS-optimized filter (6.5nm)

1.25", #2961300, ... HK$1,170 (in stock 現貨)

31mm, #2961301, ... HK$1,260 (pre-order 接受預訂)

36mm, #2961302, ... HK$1,380 (in stock 現貨)

2", #2961303, ... HK$1,930 (in stock 現貨)

∅50.4mm, #2961304, ... HK$2,020 (in stock 現貨)

50x50mm, #2961305, ... HK$2,300 (pre-order 接受預訂)

65x65mm, #2961306, ... HK$2,890 (pre-order 接受預訂)

 

O-III narrowband CMOS-optimized filter (6.5nm)

1.25", #2961175, ... HK$1,080 (in stock 現貨)

31mm, #2961176, ... HK$1,140 (pre-order 接受預訂)

36mm, #2961177, ... HK$1,300 (in stock 現貨)

2", #2961178, ... HK$1,830 (in stock 現貨)

∅50.4mm, #2961179, ... HK$2,190 (in stock 現貨)

50x50mm, #2961180, ... HK$2,270 (pre-order 接受預訂)

65x65mm, #2961181, ... HK$2,830 (pre-order 接受預訂)

 

O-III f/2 highspeed CMOS-optimized filter (6.5nm)

1.25", #2961225, ... HK$1,180 (in stock 現貨)

31mm, #2961226, ... HK$1,250 (pre-order 接受預訂)

36mm, #2961227, ... HK$1,380 (in stock 現貨)

2", #2961228, ... HK$1,940 (in stock 現貨)

∅50.4mm, #2961229, ... HK$2,010 (in stock 現貨)

50x50mm, #2961230, ... HK$2,290 (pre-order 接受預訂)

65x65mm, #2961231, ... HK$2,880 (pre-order 接受預訂)

 

*** Ha/SII/OIII narrowband CMOS-optimized filter set (6.5nm)

1.25", #2961650, ... HK$3,100 (in stock 現貨)

31mm, #2961651, ... HK$3,270 (pre-order 接受預訂)

36mm, #2961652, ... HK$3,710 (in stock 現貨)

2", #2961653, ... HK$5,260 (in stock 現貨)

∅50.4mm, #2961654, ... HK$5,980 (in stock 現貨)

50x50mm, #2961655, ... HK$6,370 (pre-order 接受預訂)

65x65mm, #2961656, ... HK$8,100 (pre-order 接受預訂)

 

*** Ha/SII/OIII f/2 highspeed CMOS-optimized filter set (6.5nm)

1.25", #2961660, ... HK$3,340 (in stock 現貨)

31mm, #2961661, ... HK$3,550 (pre-order 接受預訂)

36mm, #2961662, ... HK$3,950 (in stock 現貨)

2", #2961663, ... HK$5,500 (in stock 現貨)

∅50.4mm, #2961664, ... HK$5,740 (in stock 現貨)

50x50mm, #2961665, ... HK$6,610 (pre-order 接受預訂)

65x65mm, #2961666, ... HK$8,210 (pre-order 接受預訂)

 

*** Ultra Narrowband ***

H-alpha Ultra-Narrowband CMOS-optimized filter (3.5nm)

1.25", #2961325, ... HK$2,110 (in stock 現貨)

31mm, #2961326, ... HK$2,220 (pre-order 接受預訂)

36mm, #2961327, ... HK$2,670 (in stock 現貨)

2", #2961328, ... HK$3,030 (in stock 現貨)

∅50.4mm, #2961329, ... HK$3,310 (in stock 現貨)

50x50mm, #2961330, ... HK$3,790 (pre-order 接受預訂)

65x65mm, #2961331, ... HK$4,750 (pre-order 接受預訂)

  

H-alpha f/2 Ultra-Highspeed CMOS-optimized filter (3.5nm)

1.25", #2961375, ... HK$2,190 (in stock 現貨)

31mm, #2961376, ... HK$2,270 (pre-order 接受預訂)

36mm, #2961377, ... HK$2,750 (in stock 現貨)

2", #2961378, ... HK$3,450 (in stock 現貨)

∅50.4mm, #2961379, ... HK$3,780 (in stock 現貨)

50x50mm, #2961380, ... HK$4,290 (pre-order 接受預訂)

65x65mm, #2961381, ... HK$5,500 (pre-order 接受預訂)

 

S-II Ultra-Narrowband CMOS-optimized filter (4nm)

1.25", #2961475, ... HK$1,980 (in stock 現貨)

31mm, #2961476, ... HK$2,120 (pre-order 接受預訂)

36mm, #2961477, ... HK$2,540 (in stock 現貨)

2", #2961478, ... HK$2,880 (in stock 現貨)

∅50.4mm, #2961479, ... HK$3,100 (in stock 現貨)

50x50mm, #2961480, ... HK$3,160 (pre-order 接受預訂)

65x65mm, #2961481, ... HK$4,210 (pre-order 接受預訂)

 

S-II f/2 Ultra-Highspeed CMOS-optimized filter (4nm)

1.25", #2961525, ... HK$1,980 (in stock 現貨)

31mm, #2961526, ... HK$2,130 (pre-order 接受預訂)

36mm, #2961527, ... HK$2,570 (in stock 現貨)

2", #2961528, ... HK$2,940 (in stock 現貨)

∅50.4mm, #2961529, ... HK$3,120 (in stock 現貨)

50x50mm, #2961530, ... HK$3,180 (pre-order 接受預訂)

65x65mm, #2961531, ... HK$4,270 (pre-order 接受預訂)

 

O-III Ultra-Narrowband CMOS-optimized filter (4nm)

1.25", #2961400, ... HK$1,940 (in stock 現貨)

31mm, #2961401, ... HK$2,100 (pre-order 接受預訂)

36mm, #2961402, ... HK$2,510 (in stock 現貨)

2", #2961403, ... HK$2,850 (in stock 現貨)

∅50.4mm, #2961404, ... HK$3,070 (in stock 現貨)

50x50mm, #2961405, ... HK$3,140 (pre-order 接受預訂)

65x65mm, #2961406, ... HK$4,190 (pre-order 接受預訂)

 

O-III f/2 Ultra-Highspeed CMOS-optimized filter (4nm)

1.25", #2961450, ... HK$2,010 (in stock 現貨)

31mm, #2961451, ... HK$2,140 (pre-order 接受預訂)

36mm, #2961452, ... HK$2,530 (in stock 現貨)

2", #2961453, ... HK$2,860 (in stock 現貨)

∅50.4mm, #2961454, ... HK$3,080 (in stock 現貨)

50x50mm, #2961455, ... HK$3,180 (pre-order 接受預訂)

65x65mm, #2961456, ... HK$4,220 (pre-order 接受預訂)

 

*** Ha/SII/OIII Ultra-Narrowband CMOS-optimized filter set (3.5/4nm)

1.25", #2961670, ... HK$5,740 (in stock 現貨)

31mm, #2961671, ... HK$6,100 (pre-order 接受預訂)

36mm, #2961672, ... HK$7,340 (in stock 現貨)

2", #2961673, ... HK$8,340 (in stock 現貨)

∅50.4mm, #2961674, ... HK$9,020 (in stock 現貨)

50x50mm, #2961675, ... HK$9,620 (pre-order 接受預訂)

65x65mm, #2961676, ... HK$12,500 (pre-order 接受預訂)

 

*** Ha/SII/OIII f/2 Ultra-Highspeed CMOS-optimized filter set (3.5/4nm)

1.25", #2961680, ... HK$5,860 (in stock 現貨)

31mm, #2961681, ... HK$6,220 (pre-order 接受預訂)

36mm, #2961682, ... HK$7,460 (in stock 現貨)

2", #2961683, ... HK$8,780 (in stock 現貨)

∅50.4mm, #2961684, ... HK$9,500 (in stock 現貨)

50x50mm, #2961685, ... HK$10,130 (pre-order 接受預訂)

65x65mm, #2961686, ... HK$13,290 (pre-order 接受預訂)

  

UV/IR Cut (L filter)

1.25", #2459207A, ... HK$470 (in stock 現貨)

31mm, #2459208, ... HK$380 (in stock 現貨)

36mm, #2459421, ... HK$590 (in stock 現貨)

2", #2459210A, ... HK$780 (in stock 現貨)

∅50.4mm, #2459205, ... HK$990 (in stock 現貨)

50x50mm, #2459206, ... HK$1,340 (pre-order 接受預訂)

65x65mm, #2459401, ... HK$1,790 (pre-order 接受預訂)

  

LRGB filter set (4 pcs)

1.25", #2458472, ... HK$2,290 (in stock 現貨)

31mm, #2458474, ... HK$2,350 (in stock 現貨)

36mm, #2459425, ... HK$2,980 (in stock 現貨)

2", #2458477, ... HK$3,850 (in stock 現貨)

∅50.4mm, #2458482, ... HK$4,250 (in stock 現貨)

50x50mm, #2458487, ... HK$4,950 (pre-order 接受預訂)

65x65mm, #2458492, ... HK$5,950 (pre-order 接受預訂)

* Please ask for single piece R, G, B, or 3 pcs RGB filters

 

H-beta narrowband 8.5nm CCD filter

1.25", #2458425 ... HK$890 (in stock 現貨)

2" ... HK$1,380 (in stock 現貨)

Ø50.8mm, #2458427 ... HK$1,540 (in stock 現貨)

 

IR pass 685nm filter 

1.25", #2458385 ... HK$620 (in stock 現貨)

2", #2458386 ... HK$980 (in stock 現貨)

 

U-Venus 320-380nm filter 

1.25", #2458292 ... HK$1,650 (in stock 現貨)

2", #2458291 ... HK$2,750 (in stock 現貨)

 

UHC-S filter

1.25", #2458275 ... HK$620 (in stock 現貨)

36mm un-mounted, #2459420 ... HK$710 (in stock 現貨)

2", #2458276 ... HK$1,050 (in stock 現貨)

 

Moon & Skyglow (Neodymium)

1.25", #2458305A ... HK$620 (in stock 現貨)

2", #2458334A ... HK$1,020 (in stock 現貨)

 

Methane (889nm, 8nm)

1.25", #2458305A ... HK$1,750 (back ordered 訂貨中)

 

Contrast-Booster, 2" ... HK$680 (in stock 現貨)

Fringe Killer, 2" ... HK$680 (in stock 現貨)

 

*** Special price CCD Narrowband filters, as long as stocks last ***

Ultra-Narrowband CCD filter

(3.5nm H-alpha)

1.25" ... HK$1,490 (in stock 現貨)

Ø50.4mm ... HK$2,640 (in stock 現貨)

  

(4.5nm S-II)

1.25" ... HK$1,360 (in stock 現貨)

2" ... HK$2,080 (in stock 現貨)

 

H-alpha narrowband 7nm CCD filter

1.25" ... HK$780 (in stock 現貨)

Ø31mm un-mounted ... HK$790 (in stock 現貨)

Ø36mm un-mounted ... HK$890 (in stock 現貨)

2" ... HK$1,210 (in stock 現貨)

Ø50.4mm un-mounted ... HK$1,390 (in stock 現貨)

 

S-II narrowband 8nm CCD filter

1.25" ... HK$720 (in stock 現貨)

Ø36mm un-mounted ... HK$880 (in stock 現貨)

2" ... HK$1,010 (in stock 現貨)

Ø50.4mm un-mounted ... HK$1,360 (in stock 現貨)

  

O-III narrowband 8.5nm CCD filter

1.25" ... HK$720 (in stock 現貨)

Ø36mm un-mounted ... HK$890 (in stock 現貨)

2" ... HK$1,010 (in stock 現貨)

Ø50.4mm ... HK$1,300 (in stock 現貨)

  

Narrowband CCD filter set (Ha / SII / OIII)

1.25" ... HK$2,100 (in stock 現貨)

Ø36mm un-mounted ... HK$2,530 (in stock 現貨)

2" ... HK$3,080 (in stock 現貨)

Ø50.4mm ... HK$3,850 (in stock 現貨)

  

Fast speed f/2 Narrowband CCD filters

1.25" Ha ... HK$1,180 (in stock 現貨)

1.25" SII ... HK$1,000 (in stock 現貨) 

1.25" OIII ... HK$970 (in stock 現貨)

1.25" (Ha/SII/OIII) set ... HK$2,990 (in stock 現貨)

2" SII ... HK$1,570 (in stock 現貨)

 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Filter only for EOS DSLR modification

ACF I filter, #2459211, for Canon 300D ... HK$250 (in stock 現貨)

ACF II filter, #2459212, for Canon 350D, 10D, 20D, 30D ... HK$640 (pre-order 接受預訂)

ACF III filter, #2459214, for Canon 5D ... HK$380 (in stock 現貨)

BCF filter, #2459213, for Canon other APS-C ... HK$520 (in stock 現貨)

BCF2 filter, #2459214A, for 5D Mk II/III, 6D ... HK$620 (in stock 現貨)

 

DSLR camera filter replacement/removal service charge

APS-C camera ... HK$580

Full frame camera ... HK$680

 

Flip Mirror II Star Diagonal, #2458055 . . . HK$1,420 (in stock 現貨)

- Straight-through (S52, M48 and T2 on both sides) for full-frame camera

- Adjustable T2 thread on top for eyepiece clamps, video modules (up to 32mm image circle) or binoviewer

- Weight 195g  

 

Giant binocular viewer Mark V, #2456410  . . . HK$9,980 (in stock 現貨)

(Press here for system chart)

  

- Prism and nose piece shown in photo not included

- Including heavy duty T-2 quick changer, #2456313A

- Hard case with pre-cut foam included

　

Glasspath compensator 1.25x (for mark V bino), #2456314Z  . . . HK$730 (in stock 現貨)

Glasspath compensator 1.7x (for mark V bino), #2456316Z  . . . HK$750 (in stock 現貨)

Glasspath compensator 2.6x, #2456317  . . . HK$770 (in stock 現貨)

Glasspath compensator 1.7x 2" for Newtons, #2456300  . . . HK$1,520 (in stock 現貨)

Glasspath compensator 1.8x for refractors and SC's, #2456305  . . . HK$1,420 (in stock 現貨)

  

　

(T-2 diagonal, M42 x 0.75mm female/male thread at both ends)

T-2 Roof-Prism with BBHS coating (#2), erecting, #2456130  . . . HK$1,990 (in stock 現貨)

 

T-2 Maxbright mirror diagonal (#01A), #2456100  . . . HK$1,540 (in stock 現貨)

 

T-2 Zeiss Stardiagonal prism with BBHS coating (#01B), #2456095  . . . HK$1,680 (in stock 現貨)

 

1.25" nose piece / T-2 adapter (#14), #2458105  . . . HK$190 (in stock 現貨)

2" nose piece / T-2 adapter (#16), #2408150  . . . HK$270 (in stock 現貨)

 

Clicklock reducer 2" to 1.25" (#15B), #2956214  . . . HK$540 (in stock 現貨)

Clicklock eyepiece clamp 1.25" (#8), #2458100  . . . HK$560 (in stock 現貨)

- Rear side is T2 female thread (M42 x 0.75)

 

2"/90 degree Astro Amici-Prism with BBHS coating, #2456120  . . . HK$4,650 (in stock 現貨)

- Erecting, with 2" ClickLock-Clamp and 2" nosepiece

 

2" Amici-erecting-prism diagonal, #2956152  . . . HK$1,880 (in stock 現貨)

- With 2" to 1.25" adapter

  

MPCC Mark III, #2458400A  . . . HK$1,280 (in stock 現貨)

- No change in focal length or field size
- Newly calculated lens system - designed for an unvignetted field down to f3.5
- Maximum sharpness across the field - without center soft spot (as reported of other)
- Accepts T-2(M42x0.75) and/or 2"(M48x0.75) threaded photographic- or visual-adapters
- 2" stopping collar removable for increase in backfocus
- For photographic and visual use
- Phantom Group© multicoated for maximum transmission and freedom from reflections from UV to NIR
- 44mm clear aperture when using the M48(2") filter-tread or the Protective T-ring with optional adapter

 

MPCC Visual / Photographic Edition, #2458402 . . . HK$1,460 (in stock 現貨)

Including MPCC plus:

- Reducer 2" to 1.25" (eyepiece holder), #2408190

- Expanding ring M48/T-2, #2458110

- Hyperion FT ring 14mm, #2958214

- Hyperion FT ring 28mm, #2958228 

Hyperion 68° Modular eyepiece . . . HK$780 each (special price, in stock 現貨)

Hyperion 68° Modular eyepiece set (7 pcs with hard case) . . . HK$4,650 (special price, in stock 現貨)

- 20mm eye relief

- Fit for 1.25" / 2" ocular holders

  

Hyperion Zoom eyepiece Mark IV 8-24mm, #2454826 ... HK$1,870 (in stock 現貨)

- Lower weight (290g), slim design of 55mm diameter (perfect for binoviewing) 

- Zero -Tilt safety kerfs instead of the hated undercuts in the barrels

- Includes 2" SC-thread for shortest possible adaptation to telescope or prisms/mirrors

- 4mm backfocus-gain with spotting scope A-ring (included)

- Sufficient distance to clamp screws with telescope adapter B-ring (included)

- Eyepiece holster with belt strap, hold also firmly on tripod legs

 

Hyperion Zoom eyepiece Mark IV 8~24mm with 2.25x barlow, #2454827  ... HK$2,480 (in stock 現貨)

* 2.25x barlow only for Hyperion Zoom eyepiece, #2956180 ... HK$880 (in stock 現貨)

 

Hyperion eyepiece, M54 to T2-adapter, #2958085 ... HK$130 (in stock 現貨)  

Hyperion eyepiece, M43 to T2-adapter, #2958080 ... HK$130 (in stock 現貨)

- M43 to M42 (T2) adapter for eyepiece projection imaging (e.g. DSLR)

- Fit for Hyperion fixed or zoom eyepieces

 

ClickLock 2" T-2 clamp, #2956242 ... HK$680 (in stock 現貨)

ClickLock 2" M72 clamp, #2956272 ... HK$680 (in stock 現貨)

ClickLock 2" SC/HD clamp, #2956220 ... HK$590 (in stock 現貨)

 

VariLock 29, T-2 adjustable extension, #2956929 ... HK$440 (in stock 現貨)

 

- Overall length 20~29mm, adjustable

- Rotation adjustable

 

VariLock 46, T-2 adjustable extension, #2956946 ... HK$490 (in stock 現貨)

 

- Overall length 29~46mm, adjustable

- Rotation adjustable

 

T-2 adjustable rings, #2458102 ... HK$120 (in stock 現貨)

- 15 pcs, 0.6/0.8/1.0/1.2/1.4mm, 3 each

- For back focus distance fine tuning

 

Laser collimator Mark III, #2450343 ... HK$680 (in stock 現貨)

- New design, for Newtonian and some SCs

- Made in Germany

 

2" ClickLock mirror diagonal, #2956100  . . . HK$1,980 (in stock 現貨)

- Easy 2" ocular locking mechanism

 

Dovetail saddle, #2451530  . . . HK$320 (in stock 現貨)

Q-Turret - quadruplet eyepiece revolver 1.25", #2957010  . . . HK$380 (in stock 現貨)

 

Solar film

Density 5.0 (for visual observation and imaging)

- Full roll (100cm x 50cm) ... HK$580 (in stock 現貨)

- 50cm x 50cm, cut from full roll ... HK$320 (in stock 現貨)

- 25cm x 25cm, cut from full roll ... HK$100 (in stock 現貨)

 

Density 3.8 (imaging only, not for visual observation)

- A4 size (original package) ... HK$220 (in stock 現貨)

 

Turbo film, #2459350 (127cm x 51cm) ... HK$220 (in stock 現貨)

 

* Please ask for all other Baader items