My New Telescope - Review and EP Advice

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SUMMARY

The discussion centers on the performance and recommendations for eyepieces (EPs) for the Sky-Watcher 8" Dobsonian telescope. Users suggest that while the included Plossl eyepieces (10mm & 25mm) are adequate, upgrading to higher-end options like the 30mm Takahashi and 19mm Panoptic can significantly enhance viewing experiences, despite their higher price point of around $200 each. Additionally, the importance of using a Barlow lens to optimize focal lengths and avoid duplication is emphasized, along with the recommendation to consider eye relief for comfort during extended viewing sessions.

PREREQUISITES
  • Understanding of telescope types, specifically Dobsonian telescopes.
  • Familiarity with eyepiece specifications, including focal lengths and types (e.g., Plossl, Nagler).
  • Knowledge of Barlow lenses and their function in magnification.
  • Awareness of optical performance factors such as eye relief and image quality.
NEXT STEPS
  • Research the differences in optical performance between Plossl and premium eyepieces like Takahashi and Panoptic.
  • Learn about the specifications and benefits of various Barlow lenses for telescopes.
  • Explore the impact of eye relief on comfort during long observation sessions.
  • Investigate other telescope accessories that can enhance the viewing experience, such as filters and finderscopes.
USEFUL FOR

Astronomy enthusiasts, amateur astronomers, and telescope owners looking to optimize their viewing experience with appropriate eyepiece selections and accessories.

Codester09
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A while back, I posted here asking for telescope recommendations. After many members advised getting a dob, http://www.skywatcherusa.com/8-dobsonian-telescope-s11700.html" is what I went with.

I love this scope. Seems very well put together and can capture some pretty amazing sights. One thing that I wanted to confirm before doing anything about it are the ep's. It comes with two plossls (10mm & 25mm). They aren't the greatest and have seen others talking about how they replaced it with things like a 30mm tak and 19mm panoptic. Those ep's are both very pricey (around $200). I just wondered how big the difference would be based on what you guys know. Thanks in advance guys.
 
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Nice, basic scope with respectable aperture! You can get pretty good performance out of lower priced EPs, like TeleVue Plossls. I own several of them, and they are wonderful bang-for-the-buck EPs.

If you are going to buy EPs, you should also buy a decent Barlow, and carefully plan your EP focal lengths to avoid duplication. For instance, if you bought a 40mm EP, you shouldn't buy a 20mm if you get a 2x Barlow, since you'd be duplicating the resultant magnification. You'd be better off getting a 40mm and a 30mm, so that in combination with the Barlow you'd have the equivalent of a 20mm, and a 15mm as well, with the advantage of having the nice eye-relief of the longer EPs. Short EPs usually have shorter eye-relief and can be more fatiguing to use for long sessions.

By the way, the only "exotic" EP I have is an early Nagler. The plossls perform well with my 6" refractor. My scope is a 6" Apochromatic refractor from Astro-Physics, so I'm pretty picky about optics, and the Plossls are fine.

Good luck.
 

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