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My First Telescope

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#1 Jomaseed

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Posted 10 August 2020 - 05:28 PM

I'm looking for my first telescope on the internet and have decided to get a dobsonian telescope but I can't decide which one to get. Does anyone have any recommendations? The most I'd like to pay is 450$. And I'd like for the tube to be 6" to 8" wide. Any ideas?


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#2 Jomaseed

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Posted 10 August 2020 - 05:37 PM

Two dobs I've found are the Apertura DT8 and Orion SkyQuest XT8. I'm putting these out just to kinda paint a picture of what I'm looking at.


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#3 Augustus

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Posted 10 August 2020 - 05:39 PM

Those are both great choices.


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#4 petert913

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Posted 10 August 2020 - 05:40 PM

Go for 8”


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#5 bridgman

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Posted 10 August 2020 - 06:12 PM

Yep, something in the 8" f/6 range is a whole lot of scope for the money.


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#6 rhetfield

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Posted 11 August 2020 - 08:18 AM

When you get the scope, also look at these resources:

 

Collimation:

 

https://garyseronik....to-collimation/

https://garyseronik....pe-collimation/

 

Degree Circles:

 

https://www.cloudyni...degree-circles/

 

Degree circles will let you align the telescope to the sky and find objects based on the real time alt/az coordinates from a phone app or star chart.

 

Also, pay close attention to dimensions and how well it fits in a car for road trips.  For extra money, you can get a Skywatcher Flextube 8" that will fold up.  Some people will also rework or replace the dob base to save on size and weight. 


Edited by rhetfield, 11 August 2020 - 08:28 AM.

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#7 bwmarrin

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Posted 11 August 2020 - 12:43 PM

Two dobs I've found are the Apertura DT8 and Orion SkyQuest XT8. I'm putting these out just to kinda paint a picture of what I'm looking at.

 

I just got my first telescope a couple weeks ago and went with the Apertura AD8 from High Point and have been very happy with it :)
 



#8 aeajr

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Posted 13 August 2020 - 02:39 PM

Both of those scopes are good choices but I would recommend the Apertura AD8 over both of them.  And Highpoint is a great supplier. 

 

AD8 includes:

  • Better focuser - two speed
  • Right Angle Finder - much better than straight through
  • 2" and 1.25" eyepieces - Much better match and you are going to buy eyepieces anyway
  • Collimation tool ( must have)
  • Moon filter - you will buy it anyway

You are going to spend on these accessories anyway. 

 

Using a straight through finder on a Dob is a pain.  A RACI, right angle correct image, finder is MUCH better, especially if you add a Telrad later. 

 

The Orion RDF is OK but you will end up adding a RACI finder to that and maybe replace he RDF with the Telrad.  The RDF and telrad would be redundant so the RDF goes in the "not used" box. 

 

A two speed focuser is wonderful.  To add it later is $150 to $400 and you have to remove the old one and may have to drill new holes.  I know as I added one to my XT8.  Better to get it now. 

 

You must have a collimation tool. The Apertura Laser makes collimation easy.   The DT8 doesn't have one so you will have to add it.  The XT8 has a collimation cap which does work, but you will likely add the laser later.  Get it now. 

 

This is about cost vs. value.  The AD8 is the best value. 

 

.

These articles may be helpful.

 

Accessories to add to your Telescope
https://telescopicwa...ls-accessories/

 

 

Understanding Telescope Eyepieces- There are recommendations, based on budget,
but the meat of the article is about understanding the considerations and specifications
to know when selecting eyepieces.
https://telescopicwa...cope-eyepieces/


Edited by aeajr, 13 August 2020 - 02:55 PM.

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