Hello everyone. I currently have a Sky-Watcher Virtuoso GTi 150 f/5 that I've had for a year. I am now upgrading to a 10" Celestron starsense explorer f/4.7, (getting a great deal on the telescope). My 6" scope works well with 60 degree field of view eyepieces. Since the 10" is a different piece of equipment, I am trying to understand the right eyepieces for the 10". So my question is: can I use some of the eyepieces I use in the 6" telescope in the 10"? Is 70 to 80 degree field of view going to work better with the 10"?

#1
Posted 23 March 2025 - 02:36 PM
#2
Posted 23 March 2025 - 02:40 PM
Hello everyone. I currently have a Sky-Watcher Virtuoso GTi 150 f/5 that I've had for a year. I am now upgrading to a 10" Celestron starsense explorer f/4.7, (getting a great deal on the telescope). My 6" scope works well with 60 degree field of view eyepieces. Since the 10" is a different piece of equipment, I am trying to understand the right eyepieces for the 10". So my question is: can I use some of the eyepieces I use in the 6" telescope in the 10"? Is 70 to 80 degree field of view going to work better with the 10"?
More coma at F/4.7. Needs a Paracorr.
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#3
Posted 23 March 2025 - 05:41 PM
More coma at F/4.7. Needs a Paracorr.
Do I need a paracorr or coma corrector, are they the same thing, and do I need it if I'm not photographing?
#4
Posted 23 March 2025 - 05:58 PM
Do I need a paracorr or coma corrector, are they the same thing, and do I need it if I'm not photographing?
Well if you don't notice coma you don't need it. It is the same thing.
#5
Posted 23 March 2025 - 06:28 PM
In my opinion the larger scope will naturally have more magnification, thus you will appreciate ultra-wide eyepieces with it. You can certainly use what you have. I use my 10" f/6 for Outreach, so not using my best eyepieces but for my 10" my stable includes: 26mm Plossl (a 30mm would be better), a 17mm Plossl, a 14mm 82* ES, and a 7mm 82* ES. The 26 and 14 get the most use. I also have a cheap 30mm 80* 2" e.p. for it but it really doesn't see much use for Outreach. I only mention it as it would be a good entry-level "finder" e.p. for non-Outreach in darker skies, but an E.S. or T.V. would be nicer.
Edited by Jim T, 23 March 2025 - 06:32 PM.
#6
Posted 23 March 2025 - 06:59 PM
The biggest difference is the difference in focal length 750 vs 1200. A 10mm eyepiece is 75x in your current scope and will be 120x in the new one. For my eyes with my 10 inch f/5 I can see the coma in 2 inch eyepieces with a large field stop. But it is an abberation I can deal with. Your opinions may be different. I would use your new scope and see what you think.
I don't find any magic in 80 degree+ eyepieces. You might try one and personally see what you think. I believe the astro-tech 80 degree line is well thought of an quite economical. But ... I haven't tried one.
Edited by vtornado, 23 March 2025 - 07:02 PM.
#7
Posted 24 March 2025 - 07:54 AM
Do I need a paracorr or coma corrector, are they the same thing, and do I need it if I'm not photographing?
A Paracorr is the name for TeleVue coma correctors. The first Paracorr was introduced in 1989 and has been improved since them. I have the latest version, the Paracorr 2, as well as the very first version, the photo-visual Paracorr. The Paracorr's are the most transparent in use, the least fiddly and the Paracorr 2 has the best coma correction.
That said, coma correctors are nice to have but they are not necessary. I have a 10 inch F/5 Dob, I use a Paracorr because I also have faster Dobs, I have had my 12.5 inch F/4.06 for 25 years..
But I sometimes use my 10 inch F/5 with the 60 degree Astro-Tech Paradigms and no coma corrector just for simplicity. The views are good.. Not perfect but good.
You are in the process of getting a wonderful new scope.. You are going to enjoy it. It'll work fine with your current eyepieces. At some point you may want to upgrade your eyepiece collection.. Or not.
Jon
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