Askar 71F Flat Field Quadruplet APO Refractor - Full Review

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This is my full review of the new 71F quadruplet apochromatic refractor telescope from Askar. It's an excellent little telescope both for visual observations as well as for astrophotography. Check this video out to find out more about its strengths and weaknesses. Enjoy!
⬇️ More Information down below ⬇️
Contents of this video:
0:00 - Intro
0:49 - About Askar/Sharpstar
1:57 - Unboxing / Build quality
7:05 - Optical performance - visual
9:01 - Optical performance - imaging
12:25 - Conclusion
Items presented in the video:
Askar 71F Flat Field (affl): amzn.to/4aZWQ6Z
Svbony SV503 102ED (affl): amzn.to/481FuGp
Svbony SV215 3-8mm Zoom (affl): amzn.to/3STc86f
Review: • Svbony 3-8mm Planetary...
Tele Vue DeLite 9mm (affl): amzn.to/3Re9APe
Review: • Is it really that good...
Svbony UV/IR cut filter 1.25” (affl): amzn.to/3zlEvUz
The t-shirt I'm wearing (affl):
cottonbureau.com/p/4C3YJT/shi...
NASA Apollo Saturn V Lego set (affl): amzn.to/40jhdrf
Astro Software
ASCOM: www.ascom-standards.org
ASCOM OnStep Driver: stellarjourney.com/main/onstep-ascom-driver-software
NINA: nighttime-imaging.eu
Stellarium: stellarium.org
Deep Sky Stacker: deepskystacker.free.fr/english/index.html
Gimp: www.gimp.org
Thank you for your support!

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Опубликовано:

28 июл 2024

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Комментарии : 21

@jrwestimate6953 Месяц назад

Thanks Bogdan, your reviews are always knowledgeable, well done and thorough.

@211milkman Месяц назад

I own it. I love it. The only thing I had to do was get some riser blocks so I get my auto focuser to clear the dovetail plate.

@physmc1 13 дней назад

I've fixed that on my Askar FRA400 with a few risers O-rings and longer screw. A big total of 5 bucks :)

@Astro_Shed 5 дней назад

Nice scope, shame you did not test with a bigger sensor, to check on the field flatness.. as this is pretty important for an advertised flat field scope…good video all the same 👍🏻

@shreyaskanetkar4697 Месяц назад

Picked it up a couple of days ago. My initial concern and probably the only concern was that it was bit slow at f6.9. But as someone who lives in Arizona with 320+ days of clear weather, I don’t mind the slow scope at this price. Ironically haven’t got a chance to test it yet, because it’s been cloudy since the day I got the scope 😂

@jona5003 Месяц назад

To be honest considering the aperture, these pictures are pretty amazing, good scope for photography in my opinion.

@nikaxstrophotography Месяц назад

Askar makes some decent scopes for the price point

@ronm6585 Месяц назад

Thank you.

@CriticalThinker-42 Месяц назад

Any telescopes primary purpose is to gather as much light as possible. All things equal, go bigger. (Ed Ting) To each their own. Thanks! -mike

@JohnDoe-tm1rv 2 дня назад

Why you have not compared with SVbony ? Askar comes with 2 eyepieces, star diagonal, extenders and adaptors and built in field flattener. This is bargain of the year!

@bill5982 Месяц назад

It appears to be an extraordinary well built telescope. However, that is a really small aperture limiting light collection.

@diamondspectrum Месяц назад

The 51 Redcat is even smaller and it does a good job of collecting light/imaging.

@AmatureAstronomer Месяц назад

Interesting.

@michaelnixon6672 7 дней назад

looking for the best light rig setup based on the SvBony 503ed 80mm with Skywatcher Adventurer GTI mount. Can you provide suggestions?

@BogdanDamian 6 дней назад

@michaelnixon6672 If you are looking too keep things as light as possible, I would recommend a zoom EP, like the SV215. It will be a great match for the telescope in terms of quality and available magnification - maximum flexibility. The only downside being the short eye relief. If you are looking for the best image quality for planetrary observations including a generous eye relief possible, then consider the 4mm DeLite from Tele Vue. Alternatively go for the 7mm DeLite + a 2x Barlow from Tele Vue for more flexibility. Whichever eyepiece you go with, make sure that the diagonal you use is up to the job as this can be a bottleneck for the whole setup. Hope this helps.

@amolambli Месяц назад

Apo frr, please explain the safix of askar models 🎉❤

@graemedevine9651 Месяц назад

Thanks Bogdan, I've a Skymax 150 and im looking for something that's better for deep sky objects, in your opinion do you think this would be better for this?

@BogdanDamian Месяц назад

@graemedevine9651 Yes, because the FOV of the 71F is much wider than the one of the SkyMax and will allow for wider DSOs to fit in one frame.

@graemedevine9651 Месяц назад

@@BogdanDamian thanks, I've found an Explore Scientific 102mm F/7 ed apo for the same amount but from your review I think I would be better getting this Askar.

@TMichman Месяц назад

@@graemedevine9651 Прошу Вас, прежде, чем делать такие заключения почитать теорию астрофотографии и технические характеристики телескопов, а именно конструкцию, что такое ED, APO, Super APO, Triplet, Quadruplet, в чем между ними различие и как это различие влияет на качество картинки Если не вдаваться подробности, то условно существуют телескопы для визуальных наблюдений и для астрофотографии. В астрофотографии крайне важна максимальная коррекция оптических аберраций различного порядка, от простого хроматизма, до сферических разного порядка. При визуальных наблюдениях, в первую очередь важна апертура, а при астрофотографии светосила. Да, это прямо связано между собой, но это связано большой разницей в стоимости телескопов. Телескоп из видео чисто для астрофотографии, визуально в него только если на Луну смотреть. Ваш Skymax 150, это телескоп чисто для визуальных наблюдений. Explore Scientific 102mm F/7 ed APO отлично подойдет для визуальных наблюдений, для фотографии объектов дальнего космоса, вам надо дополнить его редуктором фокуса и корректором поля.