Askar 65PHQ 65 mm f/6.4 Astrograph

Codice articolo: AS65PHQ

The very good correction and the self-flattening design make this small telescope a compact photo machine

♦ Aperture 65 mm / focal length 416 mm / focal ratio f/6.4

♦ 5-element system with color clean triplet objective and two corrector lenses built into the tube

♦ Stable 2.5" RAP focuser with dual speed and 360° rotation

♦ Sufficient working distance for observation with 2" accessories

♦ Suitable photo adapters are included in delivery

♦ Illuminated image circle with very good correction up to full frame format

♦ CNC tube rings with Vixen style EQ5 dovetail bars and carrying handle

♦ Finder shoe for standard finder and mini guiding telescopes available

Askar 65PHQ 65 mm f/6.4 5-Element APO Astrograph
The 65PHQ is a flatfield astrograph that joins the 80PHQ, 107PHQ, and 130PHQ series.

Instead of buying extra flatteners, calculating the back focus of the flattener, or making a tedious connection to match the correct distance, astrophotographers can simply equip it with any possible imaging accessories, make the target stay at the focus, and then the whole optical system is perfect for imaging.

65PHQ has a smaller size than other PHQ astrographs. 65PHQ has a focal ratio of f/6.4 and a focal length of 416 mm. Instead of the quadruplet structure of other PHQs, the 65PHQ is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations. With its self-flattening design, 65PHQ offers strong advantages in the astronomical shooting. It supports the full-frame image circle and has a fine spot diagram with tiny distortions of the peripheral stars.

65PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The OTA weighs 2 kg, and the full package with tube rings, etc. weighs 2.8 kg. The 2.5" rigid focuser comes with a 360° rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2" female thread for installing filters.

It is also a nice choice for your visual observation. With different diagonals and various eyepieces and it can also achieve a perfect focus.It can even be used to observe planets with a super-high magnification eyepiece. The 65PHQ contains a multifunctional handle, a 300 mm dovetail plate, and sturdy double tube rings. It is small in size and light in weight, which perfectly caters to your need for viewing and shooting.

Aperture: 65 mm
Focal length: 416 mm
Focal ratio: f/6.4
Optical system: Quintuplet system with two ED glasses
Lens: Air-spaced triplet lens
Corrector: Double element corrector
Coating: All surfaces are multicoated
Illuminated and corrected field of view: 44 mm diameter
Focuser: 2.5" dual-speed rack and pinion
Working distance visually: 121 mm（from the end of 2" eyepiece holder)
Working distances for screwed conncetions: 76 mm（from M48×0.75 male thread), 105 mm（from M54×0.75 male thread), 130 mm（from M68×1 male thread)
Filter thread: 2" filter thread is included in M48 camera adapter
Rotation possibility at the focuser: Yes, with precise graduation
Transport length: 328 mm (with 1.25" adapter) to 360 mm (with all 3 photo adapters)
Working length (dew shield extended): 328 mm (with 1.25" adapter) to 420 mm (with all 3 photo adapters)
Net weight: 2.0 kg
Gross weight: 2.8 kg