Upgrading my telescope, need advice.

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Discussion Overview

The discussion revolves around upgrading telescopes for better observation of deep sky objects, such as galaxies and nebulas. Participants share their experiences and recommendations regarding telescope sizes, mounts, and expectations for viewing details in astronomy.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that a telescope with at least a 6-inch mirror would be appropriate for viewing deep sky objects with more detail, noting that larger scopes generally provide better light gathering capabilities.
  • Another participant mentions that a 10-inch Newtonian telescope on a Dobson mount is affordable but emphasizes that light pollution can affect visibility of galaxies.
  • A participant inquires about the availability of telescopes between 6-10 inches with motorized mounts in the $400-500 range.
  • One suggestion is made to check telescopes.com for options, with a mention of a 5.1-inch Meade telescope purchased for about $250.
  • Another participant argues that an 8-inch primary is a good price point for most users, while larger telescopes may require more expensive mounts and can be cumbersome.
  • A later reply expresses interest in an 8-inch or possibly a 10-inch telescope, while also cautioning about the expectations of viewing deep sky objects compared to astrophotography images.

Areas of Agreement / Disagreement

Participants generally agree on the benefits of larger telescopes for deep sky observation, particularly around the 8-inch size, but there are differing opinions on the practicality and cost of larger models. The discussion remains unresolved regarding specific recommendations for motorized mounts within the specified budget.

Contextual Notes

Participants express varying experiences based on their locations, such as light pollution affecting visibility. There are also considerations regarding the balance between telescope size, mount quality, and budget constraints.

Vorde
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For some years I have had an orion skyquest 4.5 inch reflecting telescope that I received as a gift some years ago. I have recently gotten back into astronomy and have discovered that my current telescope isn't quite as powerful as I would like.

Does anyone know what size mirror would be appropriate for viewing deep sky objects (galaxies, nebulas) with some level of detail, my current telescope can only let me see a blur in the shape of the galaxy and then only on the closest galaxies, and I am hoping to upgrade to something with much more detail.
 
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I believe at least a 6 in scope would be your best choice. Overall bigger is better, but it really depends on how much you are willing to spend. You can get a 10 inch Newtonian on a Dobson mount for a couple hundred, while my 10 inch Cass-Newtonian on its computer controlled equitorial mount was $1300. And I can't even see any galaxies other than the core of Andromeda unless I use my imager. But I am in a light polluted area, so your area might be different.

A 6 inch scope will have about 80%-90% more light gathering than your 4.5 inch one, so that already is a huge improvement.
 
I live in the country which probably explains the difference. Are there any telescopes between 6-10 inches with motorized mounts (just compensating for the rotation of the earth) in the range of 400-500$, or is that more expensive.
 
Sure. Just head on over to telescopes.com and have a look there. You should be able to find something. I got a 5.1 inch Meade on a computer control Alt-Az mount for about 250 bucks.
 
An 8" primary is the best price point for most people. Anything bigger is a headache and anything smaller leaves you feeling inadequate. Don't get me wrong, I love big tubes, but, they are heavy and need monster mounts - making a good rig expensive. A decent goto mount for a 10+ tube costs more than the tube. The factory mounts that come with mass produced 10"+ tubes are inadequate, IMO.
 
Thank you guys, I think I am going for an 8 inch and maybe a 10 inch if I can find a cheap one.
 
Vorde said:
Thank you guys, I think I am going for an 8 inch and maybe a 10 inch if I can find a cheap one.

Good luck! Also, just be aware of what you'll be expecting to see. Don't expect the kind of full color images you'll see online -- the only way to get these is to do precise astrophotography, which is an art unto itself. Certainly there are many deep sky objects which are beautiful to look at with the good old fashioned eyeball, but long exposure photographs really bring out most of the cool features.
 

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