Baader T-2 / 15 mm Extension Tube (T-2 part #25A)

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Baader T-2 / 15 mm Extension Tube (T-2 part #25A)

T-2 Part #: 25A

# 1508154

€ 24.00 Price excl. German VAT tax (19%): € 20.17

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1

  • 15mm optical path length
  • Telescope side T-2 internal thread
  • Focus side T-2 external thread
  • For eyepiece projection with shift/sliding focuser

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I would like to experiment ep projection with my Morpheus eps and an APS-C Mirrorless camera with T2 adapter mounted on the camera flange. Is the recommended extension tube still 30mm, even if the Mirrorless camera backfocus is 17,7mm instead of the 44-46,5mm of a typical DSLR? Or is it lower (15mm, even less?) I am wondering if I should buy just the M43-T2 adapter or also the extension tube. And a 7.5mm M43 extension is already provided with Morpheus EPs
Question by: Matteo G on Nov 30, 2020 4:37:00 PM | 1 Answer(s)

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19
I am trying out eyepiece projection photography using Hyperion Universal Zoom Mark IV together with
Televue 60mm ApoTelescope and
Canon 800D/EOS Rebel T7i (US) with 1.61 Crop factor (APS-C ).

What is the extension tube length that I should be using ?

(I tried with 30mm extension but still cannot get anything on the camera sensor; Been trying out at focal length of 8-24mm on the eyepieces but still nothing. ) . Am not using any star diagonal in between. Any advice?
Question by: Alan Guai on Nov 25, 2020 1:34:00 PM | 1 Answer(s)

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14
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Specifications

Additional Information

Manufacturer Baader Planetarium
SKU (#) 1508154
EAN Code 4047825016218
Net weight (kg) 0.02
Optical length (mm) 15
T-2 Part # 25A
Usage for eyepiece projection with sliding focuser
Inner Diameter / Clear Aperture (mm) 38
Outer Diameter 46
Inner Connection (lens sided) Thread, T-2 (M42 x 0,75)
Outer Connection (eyepiece/-camera-sided) Thread, T-2 (M42 x 0,75)
Compatible Brands Astro T-2, Baader Planetarium
Type of Adapter Extension
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lsprivat 04/01/2017 05/01/201708:50
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T2-Zubehör
Zwischenring aus Metall und Staubschutzkappe aus KS.

Beides ok, präzse Ausführung
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