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All-Star Telescope is your source for all things astro from telescopes to astrophotography cameras. Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844
Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844

Tele Vue 67mm Converter Lens for 55mm Plossl (ECL-67.0)

SKU ECL-67.0
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Original price $159.95 - Original price $159.95
Original price
$159.95
$159.95 - $159.95
Current price $159.95

We’ve taken advantage of the full-field capability of our 55mm Plössl by introducing a night vision specific converter lens that extends its focal length to 67mm; thereby reducing the eyepiece’s apparent field of view from 50° to 40° to exactly match the field of view of the PVS-14 objective. That’s a 20% increase in true field-of-view seen with a simple screw-in accessory lens!

Description

Equally important as seeing the entire field available from the 2″ eyepiece format, the larger exit pupil produced by the 67mm focal length provides more light to amplify. Additionally, the 55mm Plössl by itself requires more drawtube out travel than most eyepieces and the 67mm attachment moves the focus out by another 1” (25mm) from nominal. Therefore, we recommend the purchase of our 2” Extension Tube (X2C-0008) for your telescope when purchasing this attachment.

This converts our 55mm Plössl eyepiece to a 67mm focal length and reduces the apparent field of view from 50° to 40° to exactly match the 40° field of the NVD objective. That’s a field increase of 20%! Equally important as seeing the entire field available from the 2" eyepiece format, the larger exit pupil of the 67mm focal length provides more light to be amplified. The 55mm Plössl requires more drawtube out travel than most eyepieces and the 67mm attachment moves the focus out by another 1” (25mm) from nominal. Therefore, we recommend purchase of our 2” Extension Tube (X2C-0008) for your telescope when purchasing this attachment. When using the converted 55mm Plössl on a Paracorr Type-2, put the Extension Tube (X2C-0008) with converted 55mm Plössl into the Paracorr set to the 'H' setting. (Do not use EBX-2120 barrel extender with the 67mm Converted Plössl, as it doesn't have sufficient extension for use with Paracorr).