Askar SQA55 55/264 Astrograph

Name: Askar SQA55 55/264 Astrograph
Brand: Askar
SKU: 85287
Price: 999 EUR
Availability: InStock

999,00 €

TTC

Askar SQA55 The Askar SQA55 is a 55 mm f/4.8 Petzval astrograph with a 264 mm focal length. Its air-spaced quintuplet includes one SD and one ED element and supports a 44 mm full-frame image circle.

Manufacturer model: Askar SQA55 · Specifications checked against manufacturer data on 2026-11-04

Description
Détails du produit

Askar SQA55

The Askar SQA55 is a 55 mm f/4.8 Petzval astrograph with a 264 mm focal length. Its air-spaced quintuplet includes one SD and one ED element and supports a 44 mm full-frame image circle.

Camera spacing and aperture

The native self-flattened system works across a 50–60 mm camera connection range, with 55 mm recommended. A 14-blade diaphragm adjusts from f/4.8 to f/22. The front takes M67 photographic filters; the rear M48×0.75 adapter includes an internal 2-inch filter thread. Minimum focus is 5 m.

Independent focus and framing

Coarse and fine focusing have separate locks; fine adjustment provides ±1 mm travel. The coarse ring has a distance scale and MXL timing teeth for an optional belt-driven focuser. The tube orientation and graduated 360° rotator lock independently. Four rear quick-release accessory bases provide additional attachment options.

Mounting and transport

The quick-release handle incorporates a finder-base slot. A removable 200 mm Vixen-style dovetail and 1/4-inch/3/8-inch tripod holes support different mounts. The hood reverses for storage. Askar specifies 1.84 kg OTA and 2.18 kg with handle and dovetail, and includes a waterproof carrying case.

Askar manufacturer documentation

Askar SQA55 user manual

Compatibility notes

Exact named-model manufacturer specification table and operating information checked. Unpublished values are not inferred.

Additional specifications

Aperture blades	14 pieces
Aperture range	f/4.8-f/22
Minimum focus distance	5m
Focusing mode	Manual focus
Front filter thread	M67
Weight with handle and dovetail	2.18kg
Fine focus travel	±1 mm
Tripod mounting	1/4-inch and 3/8-inch holes
Rear accessory mounts	4

Référence 85287

Fiche technique

Diamètre: 55mm
Distance de raccordement caméra: Support 50-60mm range (Recommended connection length is 55mm)
Pare-buée: Reversible bayonet hood
Queue d'aronde: 200 mm Vixen-style, quick release
Correction de champ: Integrated Petzval
Focale: 264mm
Rapport F/D: f/4.8
Porte-oculaire: Independent coarse and fine adjustment; MXL belt teeth on coarse ring
Poignée: Quick-release with finder-base slot
Cercle image: 44mm
Configurations de longueur: 316mm (including dew shield); 244mm (without dew shield)
Contenu standard du fabricant: SQA55 OTA; waterproof carrying case; documentation
Modèle: SQA55
Formule optique: Quintuplet petzval APO（One piece of SD glass, one piece of ED glass）
Poids du tube optique: 1.84kg
Adaptateur arrière: M48×0.75 (with M48×0.75 filter thread)
Rotateur: 360° graduated, independent lock

Vous utilisez ce produit ? Partagez votre expérience avec d'autres astronomes.

Commentaires (0)

Aucun avis n'a été publié pour le moment.

Déjà vus

ZWO

ZWO Finder Base

ZWO Finder Base The ZWO FS-II finder shoe attaches a compatible finder or guide-scope foot to ASIAIR Pro/Plus...

29,90 €

Délai de livraison à confirmer