Après une longue pause en astronomie en raison de contraintes personnelles, j'ai récemment repris ma recherche d'un télescope pour revenir progressivement à l'observation occasionnelle. J'avais précédemment possédé et apprécié un Nexstar 127SLT, mais aujourd'hui j'ai acquis un télescope Sky-Watcher 8 pouces pliable Dobson avec fonctionnalité Go-To pour 750 dollars via une plateforme en ligne. Le télescope semble neuf, avec les étiquettes originales encore attachées, et il est complet avec des oculaires et manuels en parfait état.
Étant donné que ce modèle se vend généralement autour de 1 500 dollars, je me demande si cet achat représente vraiment un bon rapport qualité-prix. En outre, je suis impatient de savoir combien l'amélioration des performances d'observation sera significative avec cette ouverture de 8 pouces par rapport à mon précédent télescope de 127 mm, notamment pour les objets du ciel profond.
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.