Author Topic: Going to a 130mm reflector from a 70mm refractor  (Read 463 times)

ceusesugua

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Re: Going to a 130mm reflector from a 70mm refractor
« Reply #30 on: January 31, 2018, 04:30:43 AM »
Another option would be a 4 inch refractor. This would be a nice scope...and it's on sale: https://www.astronom...ube_p19782.aspx

If the 130mm astromaster was around $100ish that would be OK. They are $214 on amazon.com and shipped free with Prime.

As to whether it would be better than your 80mm refractor...for most objects it would be. But it needs cool down, accurate collimation (aligning the optics), etc. Probably not the best mount but I would think it would do OK. Might be a little shakier than your 80mm.

I think the biggest improvements would be on deep space objects. Resolution on planets (detail) should be a little better also.

John Fimbres

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Re: Going to a 130mm reflector from a 70mm refractor
« Reply #31 on: January 31, 2018, 06:47:00 AM »
From the photos I have seen the Meade 130mm F5 newt appears to be on a EQ2 mount where the Celestron appears to be on the flimsier EQ1.

neaubigvapec

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Re: Going to a 130mm reflector from a 70mm refractor
« Reply #32 on: January 31, 2018, 12:12:28 PM »
Note: CN members get a discount from Astronomics. Often the discount is free shipping.

Nicholas Becker

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Re: Going to a 130mm reflector from a 70mm refractor
« Reply #33 on: February 02, 2018, 05:42:33 PM »
I have an 80mm ED and also a 130mm f/5 reflector for my GnG setups. FWIW I was really pleasantly surprised at the optical quality of the 130mm F/5, especially for the cost.  Depending on mood or what I want to look at that evening I just choose one and go with it. The reflector is great cause I don't have to worry so much about dew. There are some diffraction spikes on brighter stars but overall I am pleased with it. It would definitely be an improvement over a 70mm or 80mm achro on DSOs. I use mine on a Porta II mount. There is some settle time with it and it's not as stable as the refractor on my light weight mount but overall I like those 130mm reflectors.  The 130mm will definitely show you more then your 80mm it will be an upgrade on most objects. I'm really not familiar with the EQ mount but I do not like using my reflector on my GEM because it doesn't have rotating tube rings so sometimes the eyepiece is in an awkward position - so it's ALT\AZ for me which I love.  Is your friend selling just the OTA or it includes the mount too?

cheers

k

laycacdownsell

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Re: Going to a 130mm reflector from a 70mm refractor
« Reply #34 on: February 09, 2018, 10:17:04 AM »
Quote
Trying to revive this old post, I have a power seeker 80mm EQ refractor and have a opportunity to get a Astromaster 130eq from a co worker. 130 is like new and still carries a warranty. Will there be much difference between them as far as optics. I know neither mount is great but I am really more concerned with the comparison of optics and what I will be able to view. Was reading about obstruction and based on specs will lose the equivalent of 10-15 mm, maybe more. Still a much larger apperture with higher useful mag.

Thoughts, He's moving and needs to get rid of some stuff so I can get it for a good price.


I had the AstroMaster 130. It's not worth the effort to fix all of the many problems that this setup has. Just way too many issues that can't be fixed easily, or without spending way more money.