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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:  $ 3,040.00
Our price:
$ 2,687.00
ready for shipping in 3-5 weeks
ZWO Camera ASI 071 MC Pro Color
ZWO
Camera ASI 071 MC Pro Color
RRP:  $ 2,280.00
Our price:
$ 2,013.00
ready for shipping in 24 h
ZWO Camera ASI 2600 MM Pro Mono
ZWO
Camera ASI 2600 MM Pro Mono
RRP:  $ 3,910.00
Our price:
$ 3,457.00
ready for shipping in 3-5 weeks
Starlight Xpress Camera Trius PRO-674 Mono
Starlight Xpress
Camera Trius PRO-674 Mono
$ 2,410.00
ready for shipping in 1-2 weeks
Starlight Xpress Camera Trius PRO-674C Color
Starlight Xpress
Camera Trius PRO-674C Color
$ 2,410.00
ready for shipping in 1-2 weeks
Starlight Xpress Camera Trius PRO-825 Mono
Starlight Xpress
Camera Trius PRO-825 Mono
$ 1,740.00
Sale price:
$ 1,598.57
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Starlight Xpress Camera Trius PRO-825C Color
Starlight Xpress
Camera Trius PRO-825C Color
$ 1,780.00
ready for shipping in 1-2 weeks
ZWO Camera ASI 174 MM Mono
ZWO
Camera ASI 174 MM Mono
RRP:  $ 890.00
Our price:
$ 779.00
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Starlight Xpress Camera Trius PRO-825 Mono, Combi Set
Starlight Xpress
Camera Trius PRO-825 Mono, Combi Set
RRP:  $ 2,610.00
Our price:
$ 2,400.00
ready for shipping in 1-2 weeks
Starlight Xpress Camera Trius PRO-694C Color
Starlight Xpress
Camera Trius PRO-694C Color
$ 2,820.00
Sale price:
$ 2,551.83
ready for shipping in 24 h
QHY Camera 294M Pro Mono
QHY
Camera 294M Pro Mono
$ 1,690.00
ready for shipping in 1-2 weeks
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 15mm T2i/T2a T2 extension ring
Omegon
15mm T2i/T2a T2 extension ring
$ 24.90
ready for shipping in 24 h
ZWO Camera ASI 462 MM Mono
ZWO
Camera ASI 462 MM Mono
RRP:  $ 419.00
Our price:
$ 371.00
ready for shipping in 3-5 weeks
Omegon 40mm T2i/T2a T2 extension ring
Omegon
40mm T2i/T2a T2 extension ring
$ 24.90
ready for shipping in 24 h
Omegon Extension tube Extender 17 mm T-thread
Omegon
Extension tube Extender 17 mm T-thread
$ 29.90
ready for shipping in 24 h
Omegon adapter ring M48-T2 0mm
Omegon
adapter ring M48-T2 0mm
$ 17.90
ready for shipping in 24 h
Explore Scientific Camera Deep Sky Astro 26MP
Explore Scientific
Camera Deep Sky Astro 26MP
$ 1,750.00
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 T2 extension tube - 12mm long
ASToptics
T2 extension tube - 12mm long
$ 32.90
ready for shipping in 24 h
ASToptics T2 extension tube - 7mm long
ASToptics
T2 extension tube - 7mm long
$ 27.90
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
$ 19.90
ready for shipping in 1-2 weeks
ASToptics T2 extension tube - 6mm long
ASToptics
T2 extension tube - 6mm long
$ 27.90
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
$ 27.90
ready for shipping in 24 h
ASToptics T2 extension tube - 9mm in length
ASToptics
T2 extension tube - 9mm in length
$ 27.90
ready for shipping in 24 h
ASToptics T2 extension tube - 30mm
ASToptics
T2 extension tube - 30mm
$ 32.90
ready for shipping in 24 h
ASToptics T2 extension tube - 15mm long
ASToptics
T2 extension tube - 15mm long
$ 37.90
ready for shipping in 24 h
ASToptics T2 extension tube - 4mm long
ASToptics
T2 extension tube - 4mm long
$ 21.90
ready for shipping in 24 h
ASToptics T2 Extension tube - 5mm long
ASToptics
T2 Extension tube - 5mm long
$ 21.90
ready for shipping in 24 h
Omegon Camera adaptor T2-Ring compatible with Canon EOS
Omegon
Camera adaptor T2-Ring compatible with Canon EOS
( 4 / 5 )
$ 19.90
ready for shipping in 24 h
ASToptics Extension tube T2 fine tuning ring - 1mm (aluminium)
ASToptics
Extension tube T2 fine tuning ring - 1mm (aluminium)
$ 10.90
ready for shipping in 24 h
Celestron Extension tube T2 Set
Celestron
Extension tube T2 Set
$ 76.00
ready for shipping in 1-2 weeks
ASToptics T-Thread extension kit / 7mm
ASToptics
T-Thread extension kit / 7mm
$ 55.00
ready for shipping in 24 h
Omegon Extension tube Extender 7 mm T-thread
Omegon
Extension tube Extender 7 mm T-thread
$ 29.90
ready for shipping in 24 h
Baader Extension tube VariLock 46 lockable T-2 29-46mm extender, with lock spanner
Baader
Extension tube VariLock 46 lockable T-2 29-46mm extender, with lock spanner
$ 80.00
ready for shipping in 1-2 weeks
Omegon T-thread Extension and 2'' nosepiece 21mm
Omegon
T-thread Extension and 2'' nosepiece 21mm
$ 19.90
ready for shipping in 24 h