Manufacturer: Pentax
Product number: PEXF8

EUR 199,99


incl. 19 % VAT (DE)  
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rating: 5.0 of 5
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Pentax Wide Angle Eyepiece XF 8.5 mm, suitable for binoviewers and with 60° field of view
With a focal length of 8.5 mm, the high-performancel Pentax XF 8.5 eyepiece is ideal for use with astronomical telescopes with 1.25" focusers. It is also recommended for countryside viewing and bird watching. As a standard unifocal eyepiece it offers a 60 degree apparent field of view, long eye relief, and bright, high-contrast images.

General features of Pentax XF eyepieces
Pentax XF eyepieces offer high-index, low-dispersion lanthanum glass elements to provide high-resolution images with minimal aberrations. Ideal for observation and photography of planets. PENTAX-original smc full-surface multi-layer coated optics reduce glare while providing maximum light transmission and color quality. Advanced computer simulation design technology was developed to reduce internal reflections, producing brighter, clearer images.

Features of Pentax XF eyepieces
Maximum definition and contrast:
The use of special ED (lanthanum) glass, blackening of the entire interior and all lens edges to prevent reflections, contributes to the achievement of this goal in the XF eyepieces, as does the SMC multicoating, which is undisputedly one of the best on the market.

Eye relief 18 mm:
An important characteristic of a true all-around eyepiece is the eye relief. Even inexperienced observers will immediately get a good image with this eyepiece. That is why we like to recommend these eyepieces for use on popular observatories.

Adjustable rubber eyeguard with click stop:
Adjust the distance of the rubber eyecup perfectly. Whether you observe with glasses or not, you will always have a comfortable view. The position of the rubber eyecup locks into place, then it cannot be adjusted unintentionally.

Use with binoviewers:
The slim design of the eyepieces and especially the calm viewing with the comfortable interpupillary distance make the XF eyepieces the best binoviewer eyepieces that we know.

XF 8.5 mm and XF 12 mm are parfocal:
What´s especially convenient is that Pentax´s two XF single focal length eyepiece, the XF 8.5 and the XF 12, are parfocal. You can change eyepieces and not need to readjust focus.

Digiscopy:
After removing the rotating eyecup, the XF eyepieces provide a thread for adapter mounting. Fixed focal lengths have 30.5 mm diameter thread with a 0.5 mm pitch, while the zoom has 43 mm diameter thread with a 0.75 mm pitch.

Field of use:
The eyepieces can be used for all kinds of amateur astronomy and nature observation, such as binocular observation, planetary observation and deep-sky observation, but also for landscape observation and bird watching when maximum contrast is required with high quality spotting scopes with 1.25" connection.
Focal length:8.5 mm
Apparent field of view:60°
Eye relief:18 mm
Optical design:6 elements (partly lanthanum glass) / 4 groups
Coating:SMC multicoating
Lens edges:Blackened
Connection telescope side:1.25" with filter thread
Connection eye-side:Thread M30.5x0.5 under the eyecup
Compatible with spotting scopes:PF-65 and PF-65 ED II series, PF-80 series, PF-100 series
Dimensions:Height 93 mm, width 43 mm
Weight:150 grams
Eyepiece
Dust caps

Manufacturer / Importeur:Tele-Optic
Street:Adlerstraße 26
ZIP / City:48527 Nordhorn
Country:Germany
Telefon number:+49 5921 320644
Email:kontakt@tele-optic.de
Website:www.sternenpark-havelland.de
Safety informations: PDF Download


Reviews

Written by Hartmut Colberg
on 2023-10-09

"Top Produkt aber für meinen vorgesehen Verwendungszweck ungeeignet "

Written by Jürgen Böttcher
on 2018-07-07

"Ich habe mir die zwei Pentax XF 8.5mm Okulare für mein Bino am 127 APO zugelegt. Nach vielem hin und her und Durchforstung von Erfahrungen in Astroforen. Angepriesen werden sie vom Anbieter ja mit hohem Kontrast, guter Schärfe und übergutmütigem Einblickverhalten. Das unter Verwendung von Lanthangläsern und kompletter Schwärzung des Innenlebens zur Vermeidung von Reflexen. Was heute ja eigentlich Standard ist. Und besonders empfohlen für Binos. Als ich nun das Objekt der Begierde ausgepackt in der Hand hielt und so von vorne und hinten durchblickte bekam ich doch einen leichten Schreck. Der hintere Einblick zeigte in der Mitte des Okulars einen deutlichen hellen Bereich. Dies bei kompletter Innenschwärzung? In der frühen Nacht konnte ich die Okulare dann an Jupiter und Mond testen. Jupiter zeigte sich im Bino bei nur leichter Turbulenz wunderbar klar und kontrastreich. Deutlich war in den Bändern Turbulenz zu erkennen und wie der Zufall es will, wanderte auch noch der GRF ins Bild. Das Einblickverhalten ist absolut unproblematisch und wunderbar stabil, auch konnte ich keine irgendwelche (befürchteten) Reflexe erkennen. Das gleiche beim Mond, sehr scharf und kontrastreich. So wie ich es wollte. Mit dem Ergebnis bin ich also sehr zufrieden. Betreffend des hellen Bereichs im Okular und der kompletten ?Innenschwärzung? sagt vielleicht der Lieferant noch etwas dazu?"

Written by Luca Lencioni
on 2018-06-13

"Ausgezeichneter Kauf. Perfektes und leistungsstarkes Okular. Ich bin voll zufrieden."

Written by Helmut Gabriel
on 2017-08-29

"Okular wird auf Grund seiner hohen Auflösung zur Trennung von Doppelsternen verwendet."

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