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I recently purchased both the Hyperion Mark IV zoom and Hyperion 2.25 barlow and have a question regarding set-up.
While the box for the zoom suggests that the barlow is attached directly to the eyepiece (see caption "thread for Hyperion Barlow" and arrow pointing directly at the eyepiece), the manual (https://www.baader-planetarium.com/en/downloads/dl/file/id/356/product/3117/description_and_recommended_accessories_for_the_hyperion_universal_zoom_mark_iv.pdf) indicates at p. 11 that "the barlow is attached onto the 1¼" nosepiece" (i.e. nosepiece between eyepiece and barlow).
Could you please advise as to the correct set-up? Does it matter one way or the other (my preference would be not using the eyepiece but I am happy to do so if this will improve performance)?
Many thanks in advance for responding at your very earliest convenience. Your kind assistance is much appreciated.
David
- Description
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Details
The Baader Barlow lenses at a glance
With currently five different barlow lenses in Baader Planetarium's product range, it is not easy to keep track of which model fulfils which function best.
Fluorite Flatfield Converter (FFC) / 3x-8x (#2458200 , € 730,-) 90mm field of view also for medium format cameras - uncompromising quality even for extreme enlargements.
Focus gain: depending on configuration about 1.5-2.6cm
Carl Zeiss 1¼" Abbe Barlow lens 2x (#1603321 , € 477,-) Legendary Zeiss quality for the common magnification range between 2x and 3x (with additional T-2 extensions). With T-2 connection for cameras or eyepiece clamps. The qualitatively equivalent solution to the Fluorite FFC when smaller field size and smaller post-magnification are desired.
Focus gain: About 3 cm
VIP 2x modular barlow lens, visual and photographic (#2406101 , € 228,-) Versatile barlow lens for magnifications from 2x, for use with cameras (via T-2 thread) and eyepieces. Calculated for 35mm image diagonal (full format). With additional T-2 extensions it can also be used for slightly higher magnification factors.
Focus gain at 2x: Approx. 3.3 cm
Baader Q-Barlow 1.3x/ 2.25x (#2956185 , € 55,-) Inexpensive and amazingly high quality Barlow lens for the lower magnification range: In addition to being used as a normal Barlow lens with eyepiece clamp (with factor 2.25x), the Barlow element can also be used as a negative lens group when screwed directly into (almost) all eyepiece sleeves or directly in front of a camera with 1.25" filter thread and then provides a lower magnification of approximately 1.3x. Ideal for adapting a modern planetary camera to the resolution of an already long focal length telescope. Prerequisite: There must be no other elements in the nose piece that would prevent the approximeately 13 mm long Q-Barlow lens group from being screwed in.
Focus gain at 2.25x: About 0.4 cm
Hyperion Zoom 2.25x Barlow lens (#2956180 , € 133,-) Specially designed for the Hyperion Zoom eyepiece, also fits the filter thread of other eyepieces. With the included T-2 adapter, it can also be used directly on cameras; provides about 2.7x at 55mm working distance and about 2.3x at 25mm.
Focus gain: About 1.1 cm
More information, images results...
... can be found on our detailed Blogpost:
Baader Blogpost:
Barlow lenses, their magnification factors and working distancesThis entry was posted on October 17, 2022Last modified on February 27, 2024.
Baader Blogpost:
The camera at the eyepieceThis entry was posted on October 17, 2022Last modified on February 27, 2024.
Baader Blogpost:
The eyepiece series from Baader PlanetariumThis entry was posted on October 17, 2022Last modified on February 27, 2024.
Additional Information
EAN Code | 4047825026569 |
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Manufacturer | Baader Planetarium |
SKU (#) | 2956180 |
Net weight (kg) | 0.10 |
Inner Connection (lens sided) | M28.5 |
Outer Connection (lens sided) | ø 1¼" (31.75 mm) |
Inner Connection (eyepiece/-camera-sided) | M28.5 |
Outer Connection (eyepiece/-camera-sided) | M28.5, M42 x 0.75 (T-2) |
Magnification (x) | 2,25 |
AR-Coating | Phantom Coating® Group |
Barrel Size (in) | 1¼" |
Optical Design | Barlow |
Speciality | Barlow lens |
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