Skip to content

Astronomy Specialist

Search

Menu

BRANDS
TELESCOPES
- TELESCOPES
- ASTROGRAPHS
  
  CELESTRON
  
  OFFICINA STELLARE
  
  PLANEWAVE
  
  SHARPSTAR
  
  SKY-WATCHER
  
  TAKAHASHI
- BINOCULARS
  
  APM
  
  CELESTRON
- CASSEGRAIN
  
  BAADER
  
  CELESTRON
  
  SKY-WATCHER
- COMPUTERIZED
  
  CELESTRON
- DALL-KIRKHAM
  
  TAKAHASHI
  
  OFFICINA STELLARE
  
  PLANEWAVE
- DOBSONIAN
  
  GEOPTIK
  
  SKY-WATCHER
  
  OPTIQUES FULLUM
- NEWTONIAN
  
  ARTESKY
  
  GSO
  
  SAXON
  
  SKY-WATCHER
- REFRACTORS
  
  ASKAR
  
  APM
  
  TAKAHASHI
  
  SHARPSTAR
  
  SKY-WATCHER
  
  WILLIAM OPTICS
  
  ZWO
- RITCHEY-CHRETIEN
  
  GSO
  
  OFFICINA STELLARE
  
  PLANEWAVE
- SMART TELESCOPES
  
  UNISTELLAR
  
  ZWO SEESTAR
- SOLAR
  
  BAADER
  
  DAYSTAR
  
  SKY-WATCHER
- SPOTTING SCOPES
  
  CELESTRON
MOUNTS
CAMERAS
ACCESSORIES
OBSERVATORIES
SPECIALS
BLOG
ABOUT US
ENGINEERING

ACCESSORIES

(1112 products)

Sort by

Featured
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old

Compare

View as List Grid

FiltersFilter & Sort

Applied Filters

Clear all

Sort by

Featured
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old

Brand

Clear

Availability

In stock (857)
Out of stock (300)

Clear

Price

From $

-

To $

From To

Clear

Threads

Clear

Optical thickness

0 mm (1)
0.5 mm (1)
1.5 mm (1)
3 mm (1)
5 mm (1)
10 mm (2)
30 mm (1)
32 mm (1)
Optical thickness 7.3 mm (1)
Optical thickness: 0 mm (11)
Optical thickness: 0.1 mm (1)
Optical thickness: 0.15 mm (1)
Optical thickness: 0.15 - 1 mm (1)
Optical thickness: 0.2 mm (1)
Optical thickness: 0.3 mm (2)
Optical thickness: 0.4 mm (1)
Optical thickness: 0.5 mm (4)
Optical thickness: 0.5 - 13.5 mm (1)
Optical thickness: 0.6 mm (1)
Optical thickness: 0.7 mm (1)
Optical thickness: 0.8 mm (1)
Optical thickness: 1 mm (10)
Optical thickness: 1.5 mm (1)
Optical thickness: 2 mm (16)
Optical thickness: 2.5 mm (4)
Optical thickness: 3 mm (9)
Optical thickness: 3.5 mm (2)
Optical thickness: 4 mm (4)
Optical thickness: 4.3 mm (1)
Optical thickness: 4.5 mm (1)
Optical thickness: 5 mm (15)
Optical thickness: 5.5 mm (2)
Optical thickness: 6 mm (4)
Optical thickness: 6.5 mm (1)
Optical thickness: 7 mm (9)
Optical thickness: 7.5 mm (1)
Optical thickness: 8 mm (8)
Optical thickness: 8.3 mm (2)
Optical thickness: 8.5 mm (1)
Optical thickness: 9 mm (6)
Optical thickness: 9.5 mm (1)
Optical thickness: 9.50 - 10.25 mm (3)
Optical thickness: 9.7 mm (1)
Optical thickness: 9.75 - 10.50 mm (1)
Optical thickness: 10 mm (9)
Optical thickness: 10.5 mm (1)
Optical thickness: 10.6 mm (1)
Optical thickness: 10.8 mm (1)
Optical thickness: 11 mm (5)
Optical thickness: 11.4 mm (1)
Optical thickness: 11.5 mm (2)
Optical thickness: 12 mm (1)
Optical thickness: 12.5 mm (5)
Optical thickness: 12.7 mm (1)
Optical thickness: 13 mm (3)
Optical thickness: 13.5 mm (1)
Optical thickness: 14 mm (3)
Optical thickness: 14 mm, 20 mm (1)
Optical thickness: 15 mm (7)
Optical thickness: 15 - 18 mm (4)
Optical thickness: 15 - 20 mm (1)
Optical thickness: 16.2 mm (1)
Optical thickness: 16.5 mm (1)
Optical thickness: 17.5 mm (1)
Optical thickness: 18.8 mm (1)
Optical thickness: 19 mm (1)
Optical thickness: 20 mm (3)
Optical thickness: 21 mm (2)
Optical thickness: 22.5 mm (1)
Optical thickness: 25 mm (3)
Optical thickness: 26 mm (1)
Optical thickness: 26.5 mm (1)
Optical thickness: 28 mm (2)
Optical thickness: 29 mm (2)
Optical thickness: 29 - 35.5 mm (1)
Optical thickness: 31 mm (1)
Optical thickness: 31.3 mm (1)
Optical thickness: 34.5 mm (1)
Optical thickness: 35 mm (2)
Optical thickness: 37 mm (2)
Optical thickness: 38.5 mm (3)
Optical thickness: 39.5 mm (1)
Optical thickness: 40 mm (1)
Optical thickness: 41.5 mm (1)
Optical thickness: 48.5 mm (1)
Optical thickness: 50 mm (2)
Optical thickness: 52 mm (1)
Optical thickness: 53 mm (1)
Optical thickness: 55 mm, 59 mm (1)
Optical thickness: 64 mm (1)
Optical thickness: 65 mm (1)
Optical thickness: 85 mm (1)
Optical thickness: 99 mm (1)
Optical thickness: 99 mm (2" barrel) (1)
Optical thickness: 100 mm (1)
Optical thickness: 109 mm (1.25" barrel) (1)
Optical thickness: 112 mm (2)
Optical thickness: 121 mm (2" barrel) (1)
Optical thickness: 131 mm (1.25" barrel) (1)
Optical thickness: -65.5 mm (1)

Clear

Aperture

30 mm (1)
32 mm (2)
48 mm (1)
50 mm (1)
50mm (1)
60 mm (1)
61 mm (1)

Clear

Optical design

Achromatic Doublet (1)
Amici erecting prism (3)
Aspheric (2)
Barlow (7)
Doublet (6)
Flatfield Barlow (1)
Mirror diagonal (2)
Modular (10)
Orthoscopic (3)
Plössl (1)
Plössl, Orthoscopic, Barlow (1)
Prism star diagonal (2)
Telecentric Barlow (2)
TOE (6)
TPL (3)
Wide angle (6)

Clear

Focal length

Clear

Focal ratio

F4.1 (1)
f/3.75 (1)
f/4 (3)
f/5 (1)

Clear

Mount type

Alt-Azimuth (1)
Equatorial (1)

Clear

Payload capacity

5 kg (1)
80 kg (1)
200 kg (1)
13 kg with counterweight (1)
8 kg without counterweight (1)
≤2.5 Nm (5kg) (1)

Clear

Encoders

Encoders: None (2)

Clear

Counterweight shaft

16 mm (4)
18 mm (2)
20 mm (6)
25 mm (8)
28 mm (3)
30 mm (3)
31.5 mm (1)
32 mm (7)
38.1 mm (1)
40 mm (2)
50 mm (1)
60 mm (1)

Clear

Bit depth

12-bit (12)
14-bit (5)
16-bit (5)

Clear

Pixel size

1.45 µm (1)
2.0 µm (2)
2.9 µm (6)
3.75 µm (1)
3.76 µm (7)
4.0 µm (2)
4.63 µm (2)
5.94 µm (1)

Clear

Resolution

1280 x 960 (1)
1920 x 1080 (7)
3008 x 3008 (2)
3840 x 2160 (4)
4128 x 2808 (2)
6064 x 4040 (1)
6224 x 4168 (3)
9568 x 6380 (2)

Clear

Quantum efficiency

75% (1)
80% (8)
81% (2)
83% (2)
89% (2)
90% (2)
91% (3)
92% (2)

Clear

Sensor diagonal

6.14 mm (1)
6.39 mm (5)
6.45 mm (1)
8.47 mm (2)
8.81 mm (2)
12.84 mm (1)
15.97 mm (2)
23.1 mm (2)
28.3 mm (3)
43.3 mm (3)

Clear

FPS

6.2 FPS (2)
13.3 FPS (3)
15.2 FPS (1)
17.8 FPS (1)
18 FPS (2)
30 FPS (1)
33 FPS (2)
40 FPS (2)
47 FPS (4)
150 FPS (2)
152 FPS (2)

Clear

Filter size

1.25" (8)
2" (6)
31 mm (4)
36 mm (3)
46 mm (2)
50 mm x 50 mm square (1)
50 mm round (2)

Clear

Bandpass (FWHM)

3 nm (1)
3.5 nm (1)
7 nm (2)

Clear

Apparent FOV

40 - 60° (1)
44° (1)
48° (6)
48 - 68° (1)
50° (8)
52° (3)
56° (3)
58° (3)
60° (6)
65° (6)
66 - 67° (1)
68° (9)
70° (1)
72° (2)
75° (1)
76° (6)
80° (1)
82° (6)
84° (1)

Clear

Barrel size

1.25" (67)
2" (35)

Clear

Colour or Monochrome

Colour (11)
Monochrome (11)

Clear

Cooled

Cooled (11)
Non-cooled (11)

Clear

Compare

GEOPTIK COUNTERWEIGHT BAR FOR NEQ6 & EQ6-R 5kg

Regular price $379^00AUD

View details
Compare

GEOPTIK COUNTERWEIGHT FOR BINOPLUS

Regular price $239^00AUD

View details
Compare

GEOPTIK COUNTERWEIGHT KIT FOR 8" SCT

Regular price $219^00AUD

View details
Compare

GEOPTIK COUNTERWEIGHT KIT FOR SCT 9.25" & 11"

Regular price $199^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR LOSMANDY STYLE 170mm
Orange Black Carbon Look
In stock

Regular price $139^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR LOSMANDY STYLE 340mm
Orange Black
In stock

Regular price $229^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR LOSMANDY STYLE 450mm
Orange Black
In stock

Regular price $259^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR LOSMANDY STYLE 481mm
Very low stock (1 unit)

Regular price $289^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR LOSMANDY STYLE 610mm
Orange Black
In stock

Regular price $389^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR VIXEN STYLE 170mm
Orange Black Carbon Look
In stock

Regular price $79^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR VIXEN STYLE 250mm
Orange Black
In stock

Regular price $99^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR VIXEN STYLE 340mm

(1)

Orange Black

Regular price $105^00AUD

View details
Compare

GEOPTIK DOVETAIL BAR VIXEN STYLE 80mm

(1)

Orange Black
In stock

Regular price $49^00AUD

View details
Compare

GEOPTIK DUAL DOVETAIL SADDLE 170MM
Orange Black
In stock

Regular price $279^00AUD

View details
Compare

GEOPTIK DUAL MINI SADDLE
Orange Black
In stock

Regular price $149^00AUD

View details
Compare

GEOPTIK DUAL SADDLE FOR HEQ5

(1)

Orange Black
In stock

Regular price $239^00AUD

View details
Compare

GEOPTIK ELEPHANT GIGANTIC HERMETIC CASE 750/400
In stock

Regular price $589^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE 300
Very low stock (1 unit)

Regular price $119^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE 430

(2)

In stock

Regular price $159^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE 505

Regular price $249^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE 540/190

Regular price $289^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE 540/245
In stock

Regular price $329^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE 620/340

Regular price $469^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE FOR REFRACTORS
In stock

Regular price $599^00AUD

View details
Compare

GEOPTIK ELEPHANT HERMETIC CASE H=280
In stock

Regular price $299^00AUD

View details
Compare

GEOPTIK FINDERSCOPE BRACKET
Orange
Very low stock (1 unit)

Regular price $59^00AUD

View details
Compare

GEOPTIK FLAT FIELD CONTROLLER

Regular price $359^00AUD

View details
Compare

GEOPTIK FLAT FIELD GENERATOR

(5)

In stock

Regular price From $249^00AUD

View details
Compare

GEOPTIK FOCUS SPACING ADAPTER
Orange
Very low stock (1 unit)

Regular price $79^00AUD

View details
Compare

GEOPTIK G-REX MAXI DUAL SADDLE 450mm
Orange Black
Very low stock (1 unit)

Regular price $599^00AUD

View details
Compare

GEOPTIK GREASE FOR MOUNTS

(1)

Regular price $49^00AUD

View details
Compare

GEOPTIK HEQ5 ADAPTER FOR EQ6 TRIPODS
In stock

Regular price $139^00AUD

View details
Compare

GEOPTIK HERCULES TRIPOD ADAPTER FOR IOPTRON CEM120

Regular price $189^00AUD

View details
Compare

GEOPTIK HERCULES TRIPOD ADAPTER FOR IOPTRON MOUNTS
Black

Regular price $169^00AUD

View details
Compare

GEOPTIK HERCULES TRIPOD ADAPTER FOR LOSMANDY GM8 & G11
Black
Very low stock (1 unit)

Regular price $149^00AUD

View details
Compare

GEOPTIK HERCULES TRIPOD ADAPTER FOR SKYWATCHER HEQ5

(1)

In stock

Regular price $139^00AUD

View details
Compare

GEOPTIK HERCULES TRIPOD FOR 10 MICRON
In stock

Regular price $1,899^00AUD

Contact Us
Compare

GEOPTIK LAPTOP NIGHT-TIME HOOD
In stock

Regular price $119^00AUD

View details
Compare

GEOPTIK LOSMANDY DOVETAIL BAR FOR 8 - 14" SCT 340mm
Orange Black

Regular price $289^00AUD

View details
Compare

GEOPTIK LOSMANDY DOVETAIL BAR FOR 8 - 14" SCT 450mm
Orange Black
Very low stock (1 unit)

Regular price $309^00AUD

View details
Compare

GEOPTIK LOSMANDY DOVETAIL BAR FOR 8 - 14" SCT 481mm
Orange
Very low stock (1 unit)

Regular price $329^00AUD

View details
Compare

GEOPTIK MAXI DUAL DOVETAIL SADDLE 300mm
Orange Black
Very low stock (1 unit)

Regular price $369^00AUD

View details
Compare

GEOPTIK MULTILAYERS TELESCOPE COVER

(6)

In stock

Regular price From $129^00AUD

View details
Compare

GEOPTIK NADIRA ASTRO CHAIR

Regular price $299^00AUD

View details
Compare

GEOPTIK NADIRUS PUSH-TO BRACKET

Regular price $69^00AUD

View details
Compare

GEOPTIK NADIRUS PUSH-TO SYSTEM

Regular price $649^00AUD

Contact Us
Compare

GEOPTIK OPTICAL TUBE RADIUS BLOCKS

(1)

Orange Black
Very low stock (1 unit)

Regular price $75^00AUD

View details
Compare

GEOPTIK PACK IN BAG FOR AZ-EQ5
Very low stock (1 unit)

Regular price $99^00AUD

View details
Compare

GEOPTIK PACK IN BAG FOR AZ-EQ6

(2)

In stock

Regular price $99^00AUD

View details
Compare

GEOPTIK PACK IN BAG FOR CELESTRON ADVANCED VX

(1)

Regular price $99^00AUD

View details

Showing 550 of 1112

Your cart

Your cart is empty

Subtotal:$0^00AUD

Loading...

EXPLORE

Terms of Service
Refund Policy
Shipping Policy
Privacy Policy
Quick Order

NEWSLETTER

Join our mailing list for updates, exclusive offers and astronomy news.

Email

CONTACT

Phone: 02 83281234

Mon - Fri 10:00 - 17:30, Sat 10:00 - 14:00

33/1-5 Thew Parade, Cromer, 2099, NSW Australia.

Drop us an email

Facebook
YouTube
Instagram

Payment methods accepted

Country/Region

Australia (AUD $)

© 2025 Testar Australia.

Compare /15

Loading...

Loading...

Choose options

Item added to your cart.

View cart