بعد فترة طويلة من الابتعاد عن علم الفلك بسبب التزامات الحياة، أعادت مؤخرًا البحث عن تلسكوب لتسهيل العودة إلى المراقبة العفوية. كنت قد امتلكت واستمتعت بـ Nexstar 127SLT سابقًا، ولكن اليوم اشتريت تلسكوب Sky-Watcher بقطر 8 بوصات من النوع القابل للطي مع وظيفة Go-To بسعر 750 دولارًا عبر سوق إلكتروني. يبدو التلسكوب جديدًا تمامًا، مع وجود طوابع الأصل مثبتة، ويأتي كاملًا مع عدسات ومجلدات في حالة مثالية.
مع العلم أن هذا النموذج يباع عادة بحوالي 1500 دولار، أود معرفة ما إذا كان هذا الشراء يمثل صفقة حقيقية جيدة. بالإضافة إلى ذلك، أرغب في معرفة كم سيكون تحسين أداء المراقبة الذي يمكن توقعه من هذا التلسكوب بقطر 8 بوصات مقارنة بتلسكوبي السابق بقطر 127 مم، خاصة بالنسبة للأجسام العميقة في السماء.
With all accessories still tagged, this is a good deal, as these typically cost over $800 new. In terms of performance, you’ll notice a significant improvement moving from a 5″ to an 8″ scope—expect better light gathering and brighter views of deep-sky objects. An 8″ is widely regarded as the ideal size for getting back into astronomy. Clear skies!
It’s great to hear that new models are available for less than I was seeing. I couldn’t find this one new online for under $1450, so I’m glad others have a chance to find it at a more affordable price. Thanks for the information!
Yes, it’s an excellent deal, and the 8-inch will definitely provide noticeably better views than a 5-inch. As long as you inspect the scope thoroughly before purchasing and ensure everything works properly, the 8-inch will give you significantly improved views for both deep sky and planetary observation. Just remember to maintain the scope well and collimate it regularly to maximize its performance.
This seems like a great deal if it’s fully functional, especially compared to the new price. Some sellers do price items low for a quick sale, but verify the motors work properly first.
For observing performance, the 8-inch is a substantial upgrade from your 127mm (5-inch), though light pollution will affect visibility of faint objects regardless of aperture. The 8-inch gathers 2.56 times more light, making stars appear a magnitude brighter and globular clusters richer with detail. It also offers 1.6 times more resolving power and magnification potential—what you see at 100x in your current scope can reach 160x in the 8-inch without losing brightness or clarity.
To maximize performance, plan to collimate the scope and allow 1-2 hours for thermal acclimation based on temperature differences.
Thanks for the detailed reply. All the motors appear to be working well, and the scope looks brand new, so I’m hoping it performs like new too.
It’s great to hear about the viewing differences. I’ll need to learn collimation, but I’ve already read and watched some tutorials. It doesn’t seem too difficult, especially with a Cheshire eyepiece or laser collimator. I’m looking forward to getting started once the skies clear up here—it’s around Bortle 5.
Great find. This should be enjoyable for you.