NEU  Extender PH Kit (Art. #37238)

 

Extender PH Features
The Japan made high quality extender lens system for astrophotography, applicable to parabolic mirror newton reflector R200SS turning into F5.6 astrograph.

 

 

 


■ The extender PH kit is designed to extend a focal length to 1.4x. The R200SS Newton reflector of 800mm (F4) will be extended to 1,120mm (F5.6).


■ Using optical system of 4-element in 3-group, coma-aberration is extraordinary eliminated to capture sharp images to the edge of imaging field, while complying full-frame camera in 44mm image circle.


■ Use of the 31.7mm eyepiece in combination with eyepiece adapter allows visual observation.

■ The same anti-reflective AS coatings, which are used for our high-end VSD100F3.8 Astrograph, are used to take advantage of 99.9% superb high transmission of light per lens surface. Loss of light, ghost and flare images are eliminated substantilly due to the complete matte finish inside.


■ The use of 50.8mm eyepiece adapter with the extender PH kit enables a use like high performance barlow lens for visual observation while eliminating coma aberration over the entire viewing field.

 

<Effective Solution for minimizing "Stray Light">

Features of External PH Kit (for R200SS)

Magnification 1.4x
Focal Length 1120mm(f5,6) from 800mm(f4)
Coating AS-Coating (Max. transmission rate 99,9% per surface)
Lens elements 3-group 4-element
Image Circle 44mm (Format 36x24mm, covering full-frame CCD format)
Kit structure 1 piece of Extender PH, 1 piece of Ex-tube 66
Filter Size 48mm filter is attachable
Applicable Optical Tube R200SS Newtonian Reflector
Visual Observation Possible (Eyepiece 31.7mm, in common use with eyepiece adapter)
Size Dia. 56mm x L: 128mm
Net Weight 245g

R200SS (Artikel #2642)

Die sehr schnelle f4 200 mm Optik des R200SS verfügt über einen parabolischen Hauptspiegel und bietet daher extrem scharfe Abbildungen ohne chromatische Aberration. Der Einsatz einer speziellen Beschichtung (state-of-the-art-Technologie) liefert eine optimale Oberfläche für die Beobachtung und Fotografie von Deep-Sky Objekten. Die große Öffnung und die kurze Bauweise machen dieses Gerät optimal für die Astrofotografie von Nebeln, Sternhaufen und Kometen. Die Verwendung eines optionalen Koma-Korrektors ermöglicht eine scharfe Abbildung bis in die Bildecken. Der Okularauszug besitzt eine Aufnahme für 2 Zoll Okulare.


Der R200SS wird mit 232 mm Rohrschellen und Schwalbenschwanz Schiene, sowie mit 7x50 Sucherfernrohr geliefert.

Photos taken with Extender PH with R200SS

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