Nous utilisons des cookies

Sur ce site Web, nous utilisons des cookies. Pour la navigation sur notre site Web, vous acceptez l'utilisation de cookies. Vous trouverez ici des informations supplémentaires sur la façon dont nous utilisons les cookies et dont vous pouvez modifier vos paramètres prédéfinis:

T-2 système Astro et pièces auxiliaires

THE BAADER ASTRO T-2 SYSTEM™

t2-system-grafik

Baader Astro T-2 System™ Component Chart

For over 30 years we have focused on the Astro T-2 thread system (M 42 x 0.75 mm); virtually every telescope manufacturer must offer this thread far ahead of the focal point of his instrument, such a universal T-ring (for DSLR cameras) can be connected.

The only exceptions are (still) Russian equipment, there the thread diameter is the same, but the pitch is still 1mm per revolution - rather than 0.75mm! Therefore, we offer among other things a "Russians adapter". At only 7mm additional optical length it can allow so many Russian lenses or telescopes to be compatible with an international Astro T-2 (M 42 x 0.75mm) connector!

For the sake of better recognition mostly are marked. See marking small 'a' or small 'i' in the respective indication! "a"; identifies an external thread (male); or, if Ø sign which a diameter, "i"; - a female is always (female) or - Ø character - an inner diameter.

 

The Optical Length

t2-system-produkte

A small selection from the variety of products from the Baader Astro T-2 System

The optical length describes the extension of the optical path caused by an adapter or accessory when inserted into the beam path of the telescope. The values listed in the system table rounded to 1/2 mm. For pure threaded adapters or tubes such as the T-2 ring (#25), the optical length arises directly from its geometric shape. Because the optical design lengths apply to the assembled, external threads are not included in the bill. This explains the extremely short optical length external thread adapters compared to female threaded adaptors.

Parts that contain optical elements (such as Zenit prisms and binocular) the optical length can vary strongly from the geometrical form of the housing. Hence the values for the optical length by such accessories was determined directly on the telescope. When used with the unique Alan Gee tele-compressor the optical length depends in addition to the distance from the primary focus.

In general: If you add an accessory an item from the Astro T-2 System ™ into the beam path of the telescope, the extension length of the focuser to the value of the specified optical length must be shortened so that the eyepiece tubes moves closer to the lens. For negative values, the focuser must be extended because the distance between the focal plane of the lens increases.

The Baader Astro T-2 System™ Overview

T-2
Component #
LABEL (i)=internal THREAD, (a)=external THREAD Opt. length (mm) Connection: objective connection: eyepiece auxiliary thread or diameter
# 1A Baader T-2 Maxbright Mirror Diagonal (T-2 part #01A) (#2456100, € 190,09) 43 T-2(i) T-2(a) M34(i) out #3
# 1B 38.5 T-2(i) T-2(a) M34(i) out #3
# 1C Baader Prism Diagonal T-2/90° 32mm (#2456005, € 92,60) 35 T-2(i) T-2(a) M34(i) out #3
# 2 47.5 T-2(i) T-2(a) M34(i) out #3
# 3 0.5 M36.4 x 1(a) T-2(a) M34(i)
# 4A Glasspathcorrector 1:1,25 for Baader-Binoviewer with T-2 thread (MaxBright® II and MaxBright®) (#2456314, € 89,68) (incl. Teflon-centering) ≤ -30 ----- M34(a)/T-2 clamp Ø 38mm -----
# 4B Glasspathcorrector 1:1,70 for Baader-Binoviewer with T-2 thread (MaxBright II® and MaxBright®) (#2456316, € 93,58) (incl. Teflon-centering) -65 ----- M34(a)/T-2 clamp Ø 38mm -----
# 4c Glasspathcorrector 1:2,60 for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V) (#2456317, € 96,50) (incl. Teflon-centering) -120 ----- M34(a)/T-2 Kclamp Ø 38mm -----
# 5 Baader 1¼" - 31.8mm nosepiece extension with 1¼" filter thread on both sides (T-2 part #05) (#1905130, € 14,13) 18.5 M28(i) M28(a) Ø 26mm(i)
# 6 11 T-2(i) Ring-clamp -----
# 6A Baader Heavy Duty T-2 QuickChanger (T-2 part #06A) (#2456313A, € 63,36) 11 T-2(i) Ring-clamp -----
# 7 Baader (TCR) Hardened Steel T-2 ChangeRing (T-2 part #07) (#2456320, € 38,01) 4 Ring-clamp T-2(a) Ø 38mm
# 6+7 Baader Complete T-2 Changer System (T-2 parts #06 & #07) (#2456321, € 62,38) 15 T-2(i) T-2(a) Ring-clamp
# 6A+7 Baader TQC/TCR Heavy duty T-2 Quick Changing System (T-2 part #06A & #07) (#2456322, € 93,58) 15 T-2(i) T-2(a) Ring-clamp
# 8 32-38 T-2(i) Ø 1¼"(i) T-2(a)
# 8A Baader Focusing Eyepiece Holder 1¼" / T-2 (T-2 part #08A) (#2458125, € 37,04) 29-34 T-2(i) Ø 1¼"(i) -----
# 9 14 T-2(i) M44 x 1(i) Ø 40mm
# 10 Baader Reducer 1¼" / 24,5mmwith filter holder (T-2 part #10) (#2408191, € 26,32) 6.5 Ø 1¼"(a) Ø 24,5mm(i) M28,5(i)
# 11 Baader Eyepiece 1¼"/36.4mm (T-2 part #11) (#2408195, € 40,94) 27 M36.4 x 1(a) Ø 1¼"(i) -----
# 12 Baader M43a x 0.75 / T-2a Adapter (e.g. for Takahashi) (#2458199, € 24,37) 0,8 (!) M43(a) T-2(a) M34(i) for #4a,b,c
# 13 Baader ZEISS Camera adapter M44/T-2 (#1508005, € 35,09) 5 M44 x 1(i) T-2(a) Ø 38mm
# 14 Baader Nose piece 1¼" / T-2 (T-2 part #14) (#2458105, € 23,40) 0,5 Ø 1¼"(a) T-2(a) M34(i) / M28,5(i)
# 15 Baader Reducer 2"/ 1 ¼" (T-2 part #15) (#2408190, € 37,04) 9 Ø 2"(a) Ø 1¼"(i) M48(i) / T-2(a/i) / M34(i)
# 15A Baader Pushfix Reducer 2" to 1¼" (T-2 part #15a) (#2408151, € 38,01) 1 Ø 2"(a) Ø 1¼"(i) M48(i) / T-2(i)
# 15B Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B) (#2956214, € 67,26) 9,5 Ø 2"(a) Ø 1¼"(i) M48(i) / T-2(i)
# 16 Baader 2" nosepiece to T-2 / M48 (T-2 part #16) (#2408150, € 35,09) 2 Ø 2"(a) T-2(a) M48(i/a) / T-2(i)
# 17 2" SC Deluxe eyepiece (#2408140, € 49,-) 53 UNC 2"(i) Ø 2"(i) /  S65 M58(i)
# 17A+B 2" SC Deluxe eyepiece with 2" filter holder (for SC & HD) (#2958144, € 65,-) 53 UNC 2"(i) Ø 2"(i) /  S65 2" Filter Thread / M58
# 18 Baader 3.3" Celestron Nut (T-2 part #18) (#2408145, € 56,54) 0 UNC 3.3"(i) ----- -----
# 19 Baader 2" Nosepiece with 2" filter thread (#2408155, € 34,12) 0 Ø 2"(a) UNC 2"(a) M48(i)
# 20 Alan Gee Telecompressor Mark II (T-2 part #20) (#2454400, € 238,82) ≈≤ 50 T-2 clamp T-2 clamp -----
# 21 Baader T Adapter (BTA) for SC and MAK Telescopes (T-2 part #21) (#2408160, € 54,59) 16 UNC 2"(i) T-2(a) T-2(i)
# 21 B Baader SC / HD Ultra Short T-Adaptor, 7mm optical length (#2958500B, € 43,87) 7 UNC 2"(i) T-2(a) T-2(i)
# 22 Baader M43a x 1 / T-2a Adapter (e.g. for Vixen) (#1508037, € 28,27) 2,5 M43 x 1(a) T-2(a) Ø 38mm
# 23 Baader M42x1 (female) / T-2 (M42x0.75 male) SLR Camera Adapter (#1508015, € 27,29) 7 M42 x 1(i) T-2(a) Ø 38mm
# 24 Baader Variable Locking / Sliding T-2 Focuser (T-2 part #24) (#2458010, € 34,12) 27.5+11,0 T-2(i) T-2(a) Ø 1¼"(i)
# 25A Baader T-2 / 15 mm Extension Tube (T-2 part #25A) (#1508154, € 17,55) 15 T-2(i) T-2(a) Ø 38mm
# 25B Baader T-2 / 40 mm Extension Tube (T-2 part #25B) (#1508153, € 19,50) 40 T-2(i) T-2(a) Ø 38mm
# 25C Baader T-2 / 7.5 mm Extension Tube (T-2 part #25C) (#1508155, € 16,58) 7.5 T-2(i) T-2(a) Ø 38mm
# 25V Baader VariLock 46, lockable T-2 ExtensionTube 29-46mm with spanner tool (T-2 part #25V) (#2956946, € 63,36) min. 29 / max. 46 T-2(i) T-2(a) T-Adapter
# 25Y Baader VariLock 29, lockable T-2 ExtensionTube 20-29mm with spanner tool (T-2 part #25Y) (#2956929, € 57,51) min. 20/ max. 29 T-2(i) T-2(a) T-Adapter
# 26 Baader T-2/T-2 Inverter Ring (#1508025, € 27,29) 0 T-2(a) T-2(a) Ø 38mm
# 27 Baader Adapter 2" (male) / T-2 (male) (#1508035, € 34,12) 0.5 UNC 2"(a) T-2(a) M48(i)
# 28 Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28) (#2958242, € 22,42) 1 T-2(i) Ø 2"(a) -----
# 29 Baader Expanding Ring T-2f / M48m (T-2 part #29) (#2458110, € 19,50) 2.5 T-2(i) M48(a) -----
# 30 Stop Ring 1¼" (T-2 part #30) (#1905131, € 24,37) ≤ 10 Ø 1¼"(i) Ø 1¼"(i) -----
# 31 Baader Double T-Filterholder 1¼" (#1508030, € 28,27) 0 T-2(a) T-2(a) M28.5(i)
# 32 Baader Ultrashort 2" eyepiece clamp (#2458196, € 67,26) 17 M68 x 1 Ø 2"(i) M68 x 1
# 33 Baader Variable locking T-2 extension (12-16mm) incl. lock ring (T-2 part #33) (#2958130, € 38,01) 12 (10) T-2(a/i) T-2(a/i) -----
# 34 Baader T-2 Conversion Ring (#2958110, € 18,53) 10 T-2(i) T-2(i) -----
# 35 Baader T-2 Lock ring 2mm optical path length (T-2 part #35) (#2958120, € 13,64) 2 T-2(i) T-2(i) -----
  • von 100.- bis 200.- (7)
  • von 200.- bis 400.- (6)
  • von 400.- bis 600.- (0)
  • von 600.- bis 800.- (0)
  • von 800.- bis 1000.- (0)
  • von 1000.- bis 2000.- (0)
  • von 2000.- bis 5000.- (0)
  • ab 5000.- (0)
Ensemble de 5 manchons de rallonge, chacun avec filetage T..
Le kit comprend 3 bagues d'écartement de différentes longu..
Bague d'extension T2 a tirage variable (amplitude de 12 a ..
- Miroir Zenith Baader-FlipMirror II (BFM II) avec trois c..
BBHS : traitement argent sur la bande passante avec traite..
T-2/90 ° diagonal prism (BaK4 glass) with 35mm free apertu..
Renvoi coudé à miroir, traitement Maxbright (153 couches),..
Renvoi coudé redresseur à 90°, filetage standard T2 mâle/f..
Tube allonge DT-4 coulant 31,75 mm, longueur 18 mm, fileta..
Porte oculaire coulant 31,75 mm/ filetage 36,4 mm Vixen #..
Convertit le filetage interne M48 d'un adaptateur en fi..
Adaptateur coulante 31.75mm, avec des rainures de sécurité
Adaptateur coulante avec des rainures de sécurité
Change un filetage femelle M48 en filetage mâle M48 Faite ..
Cet outil permet de dévisser la bague d'insertion M48/T2 d..
Bague VariLock 46, bague d'extension V T2 réglable de 20 à..
Correcteur Glasspath 1:1.70 pour binoculaires Mark V ou Ma..
T-2 (M42x0.75) Locking ring with lever for direct attachme..
- Polaris I, oculaire de mesure de 25 mm, piles incluses -..