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APO 60mm F/5 FRA300 - ASKAR

AS-FRA300
Rating 

An optimized telescope for the large field with a full format APN with an corrected field of 44mm.

€1,199.00
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Description
  • Opening: 60 mm
  • Focal : 300mm
  • Focal ratio: F/5
  • Integrated corrector
  • Objective lens: Quintuplet Petzval APO fully spaced (including an ED glass)
  • Image circle: 44 mm full format
  • Connection of male accessories M42 × 0.75, male M48 × 0.75, male M54 × 0.75
  • Handle and tail rings supplied (Vixen)


New Askar Fra300 Small and powerful

Since their creation, astrographers with a short focal report of the Askar Fra series have been very well received by amateurs of astronomy.
Sharpstar now introduces the small sister of 60 mm F5 with 300mm of focal length covering 44mm of fixed image circle.

The star is clear and stung. In the center of its field of vision, the RMS radius can reach 2um. Even a serious user can also be satisfied with regard to the shape of the stars. It is excellent with full format, which is a rare in these ranges for amateur astronomers.

Compared to F/6 or F/7, F/5 can effectively reduce exposure time, helps you get the same exposure in less time. In addition, the whole OTA is compact, which makes the portable choice for land photographers.



Quality objective

The objective of the FRA300 adopts a quintuplet structure entirely spaced with air, including a piece of ED glass, it also adopts a fully multilayer coating to effectively eliminate parasitic light.

In particular, the objective of the rear group adopts the two parts of very separate refractive lenses, which improves both the quality of the star and the performance of correction of the aberrations, and has a very good control of the reduction in the full -format peripheral light


Petzval objective

Thanks to the native design of Petzval, the user does not need to calculate the backfocus, as long as the focus is made the correction is maximum.

Mechanically, FRA300 Pro is assembled with high quality CNC machined components, wrapped in a smooth spraying coating and a light oxidation process, both beautiful and practical.
The design of the tube ring is just as light and elegant. Despite the increase in cost, we want enthusiasts to use the FRA300 Pro which works well in all points of view and is taken into account in the smallest detail.



Focuse 2.5 "in Cremaillère

The focus is a 2.5 "rack -up focusing, which is solid and beautiful.
It is designed with double -speed manual buttons, twin buttons for coarse adjustment and a fine adjustment button for a specific focus, equipped with a universal thread M48X0.75 for conventional adaptation.

The end is equipped with a 360 ° rotator, which is practical for users to turn at any time. angle during shooting.



Well equipped !

FRA300 PRO is also delivered standard with a multifunction handle and a 300 mm vixen style spray tail, which can be directly connected to various supports and accessories, the multifunctional handle can also be connected to the universal research base vixen. The 300 mm sparkling plate allows the astrographer to maintain the balance on the frame.



Features:

  • Opening: 60 mm
  • Focal distance : 300mm
  • Focal ratio: F/5
  • Objective lens: Quintuplet Petzval APO fully spaced (including an ED glass)
  • Image circle: 44 mm full format
  • Accessory connection (with the fully removed caulifier) : :
         71 mm (from the male thread base M42 × 0.75)
         67 mm (from the male thread base M48 × 0.75)
         71 mm (from the M54 × 0.75 male thread base)
  • Diameter of the fogweed: 92mm
  • Total length : 303mm
  • Net weight: 2.26 kg
  • Gross weight: 3.12 kg
  • Rear thread: male thread M48 * 0.75



Elements delivered

  • tube ring
  • a handle
  • An Askar Aronde tail 300 mm Vixen
  • an adapter M42 * 0.75
  • a manual.


Product Details
AS-FRA300

Data sheet

Ouverture
60mm
Focale
300mm
Rapport F/D
5
Connexion
M42 - M48 - M54
Monture
Sans
Oculaires inlus
aucun
Chercheur
non
Taille (cm)
303mm
Poids (Kg)
3.12
Reviews
Grade 

Une petite merveille

2 mois et demi que je shoote avec dès que le temps le permet (assez souvent du coup car habitant dans le midi ;-)) ; un vrai bijou, des étoiles bien rondes et un super piquet ! Bref, à acheter les yeux fermés si vous êtes à la recherche d'une lunette de 300 mm de focale !

Grade 

prêt à emploi, pour débutant et confirmé

lunette très facile à utiliser (pas de tirage à respecter) et bien corrigée dans les coins. Testée avec une asi2600mc : pas de chromatisme détectable (halo rouge ou bleu).

ratio "qualité/emmerdement" au top.




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AsiAir compatible ZWO cable for 2 heating resistors RCA connectors

APO 60mm F/5 FRA300 - ASKAR

An optimized telescope for the large field with a full format APN with an corrected field of 44mm.

Write your review
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