TeleVue Powermate 2" 4x Barlow Lens

 529,00

Powermate 4x van 2 inch voor fotografische treinen met een hoge, constante factor.

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TeleVue Barlow Lens 4x Powermate 2" Black TeleVue Powermate 4x barlow lens with 2-inch connector, clamp ring with adjusting screws, and green TeleVue Powermate imprint on white background
TeleVue Powermate 2" 4x Barlow Lens
 529,00

Set met PMT-4201 T-ring adapter

TeleVue PMT-4201– T-Ring Adapter

PMT-4201 T-ring adapter die een camera rechtstreeks op de Powermate zet.

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TeleVue Powermate 4x 2" : Barlowlens: telecentrische vergroter van TeleVue

De Powermate 4x in 2 inch uitvoering is gebouwd voor fotografische treinen die een hoge, stabiele factor vragen: planeetwerk met grotere camera's, zonnefotografie achter een H-alfa-filter, of spectroscopie.

De 2 inch behuizing houdt de beeldcirkel ruim, zodat ook bij een grotere sensor de hoeken verlicht blijven.

Telecentric instead of Barlow

A Powermate is not a Barlow. Behind the negative front group is a second, positive group that makes the light beam parallel again. The result: the magnification factor remains practically constant, regardless of what is behind it and at what distance.

A classic Barlow lens changes its magnification as the distance to the sensor or eyepiece increases and shifts the eyepiece's exit pupil. The Powermate does neither of these, making it suitable for long optical trains and for photography.

For planet photography

For moon and planet imaging with a video camera, the image scale determines the detail. The Powermate brings the f-ratio to the level that matches the camera's pixel size, with a predictable, fixed factor.

With the matching T-ring adapter, you screw a camera directly onto the Powermate, without loose adapters in the train.

Featured accessories

Voor fotografie hoort de PMT-4201 T-ring adapter erbij, waarmee een camera met T2-aansluiting direct op de Powermate schroeft. Visueel combineert de Powermate met elk oculair van het merk.

For whom yes and for whom no

  • ✓ Zonne- en planeetfotografie met grotere camera's
  • ✓ Wie 4x nodig heeft zonder factorverloop
  • ✓ Veeleisende optische treinen
  • ✗ Visueel allroundgebruik
  • ✗ Kleine, langzame telescopen

Specifications

Magnification factor4x
TypeTelecentric, 4 elements
Stitch gauge2 inches
CoatingFully multi-coated
T-ring adapterPMT-4201 (apart verkrijgbaar)

More eyepieces and Barlows are on the Accessory page for eyepieces and Barlows. You can find the complete selection of this merk on the TeleVue merk Page.

Additional information

Use Type

Astronomy

Suitable for

Cameras, Eyepieces

Filter size/thread

2 inches

Eyepiece mount

1.25 + 2 inches

Enlargement

4x

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