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
  
  SKY-WATCHER
- REFRACTORS
  
  ASKAR
  
  APM
  
  TAKAHASHI
  
  SHARPSTAR
  
  SKY-WATCHER
  
  WILLIAM OPTICS
  
  ZWO
  
  NAKOH
- RITCHEY-CHRETIEN
  
  GSO
  
  OFFICINA STELLARE
  
  PLANEWAVE
- SMART TELESCOPES
  
  ZWO SEESTAR
- SOLAR
  
  BAADER
  
  DAYSTAR
  
  SKY-WATCHER
- SPOTTING SCOPES
  
  CELESTRON
MOUNTS
CAMERAS
ACCESSORIES
OBSERVATORIES
SPECIALS
BLOG
ABOUT US
ENGINEERING

METRIC ADAPTERS

(219 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

Availability

In stock (189)
Out of stock (30)

Clear

Brand

APM (2)
Askar (1)
Baader Planetarium (74)
Daystar (2)
Optec (2)
Prima Luce Lab (15)
Takahashi (6)
Teleskop Service (21)
Testar (40)
Wanderer Astro (2)
William Optics (1)
ZWO (19)

Clear

Price

From $

-

To $

From To

Clear

Threads

Clear

Optical thickness

0.5 mm (1)
1.5 mm (1)
3 mm (1)
15 mm (1)
Optical thickness 7.3 mm (1)
Optical thickness: 0 mm (14)
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: 0.3 - 1.0 mm (4)
Optical thickness: 0.4 mm (1)
Optical thickness: 0.5 mm (4)
Optical thickness: 0.6 mm (1)
Optical thickness: 0.7 mm (1)
Optical thickness: 0.8 mm (3)
Optical thickness: 1 mm (9)
Optical thickness: 1.4 mm (1)
Optical thickness: 1.5 mm (1)
Optical thickness: 2 mm (13)
Optical thickness: 2.1 mm, 6.2 mm (1)
Optical thickness: 2.5 mm (1)
Optical thickness: 3 mm (11)
Optical thickness: 4 mm (7)
Optical thickness: 4.3 mm (1)
Optical thickness: 4.5 mm (1)
Optical thickness: 5 mm (19)
Optical thickness: 5 - 40 mm (1)
Optical thickness: 5.3 mm (1)
Optical thickness: 5.5 mm (1)
Optical thickness: 6 mm (4)
Optical thickness: 6.5 mm (1)
Optical thickness: 6.7 mm (1)
Optical thickness: 7 mm (10)
Optical thickness: 7.5 mm (2)
Optical thickness: 7.5 - 40 mm (1)
Optical thickness: 7.5 - 100 mm (1)
Optical thickness: 8 mm (7)
Optical thickness: 8.6 mm (1)
Optical thickness: 9 mm (7)
Optical thickness: 9.5 mm (1)
Optical thickness: 9.50 - 10.25 mm (3)
Optical thickness: 9.75 - 10.50 mm (1)
Optical thickness: 10 mm (8)
Optical thickness: 11 mm (7)
Optical thickness: 11.4 mm (1)
Optical thickness: 11.5 mm (1)
Optical thickness: 12 mm (2)
Optical thickness: 12 - 16 mm (1)
Optical thickness: 12.5 mm (2)
Optical thickness: 12.7 mm (1)
Optical thickness: 13 mm (3)
Optical thickness: 13 - 31 mm (1)
Optical thickness: 13.5 mm (1)
Optical thickness: 14 mm (3)
Optical thickness: 14 mm, 20 mm (1)
Optical thickness: 15 mm (4)
Optical thickness: 15 - 18 mm (4)
Optical thickness: 15 - 20 mm (1)
Optical thickness: 16.5 mm (2)
Optical thickness: 17 - 23 mm (1)
Optical thickness: 20 mm (2)
Optical thickness: 20 - 29 mm (1)
Optical thickness: 20.5 - 30 mm (1)
Optical thickness: 21 mm (2)
Optical thickness: 22.5 mm (1)
Optical thickness: 26 mm (1)
Optical thickness: 28 mm (2)
Optical thickness: 29 - 35.5 mm (2)
Optical thickness: 29 - 46 mm (1)
Optical thickness: 39.5 mm (1)
Optical thickness: 50 mm (2)
Optical thickness: 52 mm (1)

Clear

Compare

ADAPTER M48 FEMALE TO M42 MALE 5-8mm
In stock

Regular price $29^00AUD

View details
Compare

ADAPTER M48 MALE - M42 MALE 2mm
In stock

Regular price $29^00AUD

View details
Compare

ADAPTER M48 MALE - M48 MALE 2mm

(1)

In stock

Regular price $39^00AUD

View details
Compare

ADAPTER M52 FEMALE - M48 MALE 6mm
In stock

Regular price $59^00AUD

View details
Compare

ADAPTER M52 MALE - M42 FEMALE 2mm
In stock

Regular price $59^00AUD

View details
Compare

ADAPTER M52 MALE - M48 FEMALE 2mm
In stock

Regular price $59^00AUD

View details
Compare

ADAPTER M54 FEMALE - M42 MALE 7mm
In stock

Regular price $59^00AUD

View details
Compare

ADAPTER M54 FEMALE TO M48 MALE 7mm

(2)

In stock

Regular price $49^00AUD

View details
Compare

ADAPTER M54 FEMALE TO M54 FEMALE 10mm

(1)

In stock

Regular price $49^00AUD

View details
Compare

ADAPTER M54 MALE - M42 MALE 2mm
In stock

Regular price $85^00AUD

View details
Compare

ADAPTER M54 MALE - M48 FEMALE 2mm
In stock

Regular price $49^00AUD

View details
Compare

ADAPTER M54 MALE TO M42 FEMALE
In stock

Regular price $39^00AUD

View details
Compare

ADAPTER M54 MALE TO M42 FEMALE 2mm

(1)

In stock

Regular price $49^00AUD

View details
Compare

ADAPTER M54 MALE TO M42 MALE 2mm
In stock

Regular price $59^00AUD

View details
Compare

ADAPTER M54 MALE TO M48 FEMALE
In stock

Regular price $59^00AUD

View details
Compare

ADAPTER M54 MALE TO M54 MALE 2mm
In stock

Regular price $49^00AUD

View details
Compare

ADAPTER M54 x 1 MALE TO M48 MALE 5mm

(2)

Very low stock (1 unit)

Regular price $59^00AUD

View details
Compare

ADAPTER M56 & M52 FEMALE - M54 FEMALE
In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M56 FEMALE - M48 MALE 7mm
In stock

Regular price $49^00AUD

View details
Compare

ADAPTER M63 x 1 FOR 2.5" FLATTENER
In stock

Regular price $99^00AUD

View details
Compare

ADAPTER M68 & M63 - M48 FOR RICCARDI REDUCER
In stock

Regular price $99^00AUD

View details
Compare

ADAPTER M68 - M63 FOR RICCARDI REDUCER
In stock

Regular price $99^00AUD

View details
Compare

ADAPTER M68 FEMALE - M54 FEMALE 10mm
In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M68 FEMALE TO M48 MALE 9mm
In stock

Regular price $79^00AUD

View details
Compare

ADAPTER M68 FEMALE TO M54 MALE 9mm
In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M68 MALE - 2" SC FEMALE 1mm
In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M68 MALE - M42 MALE 3mm
In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M68 MALE - M48 FEMALE 3mm
In stock

Regular price $79^00AUD

View details
Compare

ADAPTER M68 MALE - M48 FEMALE EXTRA-SHORT
Very low stock (1 unit)

Regular price $99^00AUD

View details
Compare

ADAPTER M68 MALE - M48 MALE 3mm

(1)

In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M68 MALE - M54 FEMALE 3mm
In stock

Regular price $79^00AUD

View details
Compare

ADAPTER M68 MALE TO M48 FEMALE
In stock

Regular price $79^00AUD

View details
Compare

ADAPTER M68 MALE TO M54 MALE 3mm
In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M68 MALE TO M68 MALE 3mm
In stock

Regular price $69^00AUD

View details
Compare

ADAPTER M69 - M68 5.3mm
Very low stock (1 unit)

Regular price $99^00AUD

View details
Compare

Sold out

ADAPTER M69 MALE - M48 MALE 1mm

Regular price $135^00AUD

View details
Compare

ADAPTER M72 FEMALE - M68 MALE 10mm

(1)

In stock

Regular price $99^00AUD

View details
Compare

ADAPTER M72 MALE - M68 FEMALE 8mm
In stock

Regular price $79^00AUD

View details
Compare

ADAPTER M72 MALE - M68 MALE 8mm
In stock

Regular price $99^00AUD

View details
Compare

ADAPTER M72 MALE TO M54 MALE 8mm
In stock

Regular price $99^00AUD

View details
Compare

Sold out

ADAPTER M74 FEMALE - M63 FEMALE FOR RICCARDI REDUCER

Regular price $129^00AUD

View details
Compare

ADAPTER M82 FEMALE - M48 FEMALE 12.5mm
In stock

Regular price $89^00AUD

View details
Compare

ADAPTER M82 FEMALE - M68 MALE
In stock

Regular price $129^00AUD

View details
Compare

ADAPTER M82 FEMALE- M48 FEMALE 8.6mm
In stock

Regular price $189^00AUD

View details
Compare

ADAPTER M82 MALE - M68 3mm
Very low stock (1 unit)

Regular price $99^00AUD

View details
Compare

APM TILT ADJUSTER FOR M63 RICCARDI REDUCER
Backordered

Regular price $149^00AUD

Contact Us
Compare

APM TILT ADJUSTER FOR M82 RICCARDI REDUCER
Very low stock (1 unit)

Regular price $149^00AUD

View details
Compare

ASKAR FMA180 M48-M42 ADAPTER
Very low stock (1 unit)

Regular price $29^00AUD

View details
Compare

BAADER M42 FEMALE TO M42 FEMALE CONVERSION RING
In stock

Regular price $49^00AUD

View details
Compare

BAADER 1.25" / T2 NOSEPIECE
In stock

Regular price $49^00AUD

View details

Showing 50 of 219

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 $)

© 2026 Testar Australia.

Compare /15

Loading...

Loading...

Choose options

Item added to your cart.

View cart

★ Reviews

Let customers speak for us

93%

(747)

5%

(44)

1%

(10)

0%

(1)

0%

(1)

A

SKYWATCHER WIFI ADAPTER

Anthony Bending

Must have for novices, makes alighnment so easy

Must have for novices, makes alighnment so easy.

P

ZWO CAA ROTATOR

Philip

Works really well

Works really well. Just make sure your setup has enough power if you running lots of devices.

It’s great that you can limit it to 180 degrees

A

WANDERER WHITE DWARF FLAT PANEL 250mm

Anthony Bailey

The Wanderer White Dwarf Flat Panel met my expectations.

The Wanderer White Dwarf Flat Panel does a good job of acquiring flats. Adjustable brightness is a very handy feature & the unit is very robust & well constructed.

M

Michael

Just what I needed.

M

FINDER SCOPE MOUNTING BASE

Michael

Fast and easy transaction… great to do business with.

1 2 3

Greg Andrews

Love the UHC-L Baader 2inch filter

I have been using the UHC-L filter on my W.O. Redcat 51 and 71 and I am loving the results that I am getting with this filter. I am very impressed indeed, both with the filter and the Redcats, all awesome pieces of kit.

BAADER UHC-L / ULTRA-L-BOOSTER FILTER

James

Highly recommended all in one package.

I have been using this camera for just over a year now coupled with a ZWO filter wheel and a Baader filter set. I have been really happy with the results. The camera is fast and the images are very clean. A huge improvement over my last camera. No issues using the inbuilt guide camera through the filters - N.I.N.A. / PHD2 always finds multiple stars to guide on. The inbuilt guide camera really simplifies my setup. I highly recommend this camera. Examples of my images here: https://deepspaceplace.com/images.php?sort=&filter=ASI2600MM

ZWO ASI2600MM DUO [MONO]

GARRY BOTT

I don't own an observatory so a three hour set up

I don't own an observatory so a three hour set up (250 f4 truss Newtonian on a g11 mount plus camera and guide scope) requires me to leave the setup outside during the observing window. This cover, the large, allows this. It fits well. The only addition I could recommend would be Velcro straps on the apron. My setup is outside Tamworth. I face hot weather and thunderstorms. A permanent observatory is my next step, but this cover dampens the urgency. My setup includes a large camera on the side of the Newtonian. The cover is large enough to include leaving the camera on, near focus, and ready to go the next night.

GEOPTIK MULTILAYERS TELESCOPE COVER

Tim Jones

Outstanding!

I have a long history with telescopes and astronomy, yet this device has blown me away. At half the price of my first Celestron and incredible results this purchase has been a revelation. I have awesome service from Testar and am loving exploring the sky with the S30.

SEESTAR S30 SMART TELESCOPE

Alan Brockman

Beautiful workmanship and lightweight

Beautiful workmanship and lightweight being carbon fibre. It attaches to my truss OTA with their mounting bracket and allows for precise adjustment and alignment. It has an impressive amount of brightness adjustment but my only gripe is that the panel is so bright I need to set it on its lowest value. Had I known I would have got a neutral density filter for it. It’s pricey but it takes one more tedium out of taking flats as it can be automated in management software like Sequence Generator Pro. Highly recommended!

WANDERER ASTRO MOTORIZED FLAT PANEL V4-EC PRO 280mm