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A T2 thread, also written T-2, has a diameter of 42mm and a thread pitch of 0.75mm. It is also sometimes written as M42x0.75.

The low pitch distinguishes it from other M42 threads.

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ZWO Camera ASI 2600 MC Pro Color
ZWO
Camera ASI 2600 MC Pro Color
RRP:  $ 3,020.00
Our price:
$ 2,687.00
ready for shipping in 24 h
Omegon Camera adaptor T2-Ring für Nikon
Omegon
Camera adaptor T2-Ring für Nikon
$ 19.90
ready for shipping in 24 h
noctutec Electronic collimator OCAL V3.0 MAX
noctutec
Electronic collimator OCAL V3.0 MAX
( 3 / 5 )
$ 367.00
ready for shipping in 3-5 weeks
noctutec Electronic collimator OCAL V2.0 PRO
noctutec
Electronic collimator OCAL V2.0 PRO
$ 216.00
ready for shipping in 3-5 weeks
ZWO Helical Focuser 1.25"
ZWO
Helical Focuser 1.25"
( 5 / 5 )
$ 108.00
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Omegon 40mm T2i/T2a T2 extension ring
Omegon
40mm T2i/T2a T2 extension ring
$ 24.90
ready for shipping in 24 h
TS Optics short T2 Helical Focuser & Adapter
TS Optics
short T2 Helical Focuser & Adapter
RRP:  $ 108.00
Our price:
$ 75.00
ready for shipping in 3-7 days
ZWO Camera ASI 174 MM Mono
ZWO
Camera ASI 174 MM Mono
RRP:  $ 880.00
Our price:
$ 779.00
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ZWO Camera ASI 2600 MM Pro Mono
ZWO
Camera ASI 2600 MM Pro Mono
RRP:  $ 3,890.00
Our price:
$ 3,457.00
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Omegon Adaptors 1.25'', 30mm extension tube
Omegon
Adaptors 1.25'', 30mm extension tube
$ 24.90
ready for shipping in 24 h
Omegon T2 extension tube - 30mm
Omegon
T2 extension tube - 30mm
$ 19.90
ready for shipping in 24 h
ZWO T2 / C mount adapter
ZWO
T2 / C mount adapter
$ 26.90
ready for shipping in 24 h
Baader T2/1.25" ultrashort adapter
Baader
T2/1.25" ultrashort adapter
$ 34.90
ready for shipping in 1-2 weeks
Omegon 7.5 mm T2i/T2a T2 extension ring
Omegon
7.5 mm T2i/T2a T2 extension ring
$ 19.90
ready for shipping in 24 h
ASToptics M42 (FEMALE) TO M42 (FEMALE) adapter, 10MM
ASToptics
M42 (FEMALE) TO M42 (FEMALE) adapter, 10MM
$ 26.90
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ZWO Camera ASI 462 MM Mono
ZWO
Camera ASI 462 MM Mono
RRP:  $ 417.00
Our price:
$ 371.00
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Omegon 15mm T2i/T2a T2 extension ring
Omegon
15mm T2i/T2a T2 extension ring
$ 24.90
ready for shipping in 24 h
Omegon Extension tube Extender 30 mm T- thread
Omegon
Extension tube Extender 30 mm T- thread
$ 29.90
ready for shipping in 24 h
Omegon T2 ring for Minolta AF and Sony A-Mount cameras
Omegon
T2 ring for Minolta AF and Sony A-Mount cameras
$ 29.90
ready for shipping in 24 h
ASToptics T2 extension tube - 6mm long
ASToptics
T2 extension tube - 6mm long
$ 26.90
ready for shipping in 24 h
Baader Adapter Eyepiece clamp ClickLock 1 ¼"/T-2i
Baader
Adapter Eyepiece clamp ClickLock 1 ¼"/T-2i
$ 95.00
ready for shipping in 1-2 weeks
QHY Camera 183C Color
QHY
Camera 183C Color
$ 930.00
Product can be shipped as of 15.04.2025
ASToptics T2 extension tube - 9mm in length
ASToptics
T2 extension tube - 9mm in length
$ 26.90
ready for shipping in 24 h
ASToptics Extension tube T2 Fine tuning Kit - 0.5mm; 0.8mm; 1mm
ASToptics
Extension tube T2 Fine tuning Kit - 0.5mm; 0.8mm; 1mm
$ 26.90
ready for shipping in 24 h
Baader Extension tube Fine Tuning Ring Set T2 0.3 / 0.5 / 1mm
Baader
Extension tube Fine Tuning Ring Set T2 0.3 / 0.5 / 1mm
$ 22.90
ready for shipping in 1-2 weeks
ASToptics Easy-Grip Twist-Lock adapter (M42 to 1.25")
ASToptics
Easy-Grip Twist-Lock adapter (M42 to 1.25")
( 5 / 5 )
$ 75.00
ready for shipping in 24 h
ASToptics M42 MALE TO 1.25"/ T2 ADAPTER
ASToptics
M42 MALE TO 1.25"/ T2 ADAPTER
$ 64.00
ready for shipping in 24 h
ASToptics T-Thread extension kit / 7mm
ASToptics
T-Thread extension kit / 7mm
$ 55.00
ready for shipping in 24 h
Starlight Xpress Camera Trius PRO-674 Mono
Starlight Xpress
Camera Trius PRO-674 Mono
$ 2,390.00
ready for shipping in 1-2 weeks
Starlight Xpress Camera Trius PRO-674C Color
Starlight Xpress
Camera Trius PRO-674C Color
$ 2,390.00
ready for shipping in 1-2 weeks
Baader Diagonal mirror Maxbright Universal 90° T2
Baader
Diagonal mirror Maxbright Universal 90° T2
$ 241.00
ready for shipping in 1-2 weeks
Baader Zenith prism T-2/90° 32mm prism
Baader
Zenith prism T-2/90° 32mm prism
$ 120.00
ready for shipping in 3-7 days
Starlight Xpress Camera Trius PRO-825 Mono
Starlight Xpress
Camera Trius PRO-825 Mono
$ 1,770.00
ready for shipping in 24 h
TS Optics T2 extension tube, 5mm optical path
TS Optics
T2 extension tube, 5mm optical path
$ 22.90
ready for shipping in 3-7 days
TS Optics T2 extension ring, optical path 20mm
TS Optics
T2 extension ring, optical path 20mm
$ 23.90
ready for shipping in 3-7 days
TS Optics T2 extension ring, optical path 3mm
TS Optics
T2 extension ring, optical path 3mm
$ 22.90
ready for shipping in 3-7 days
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