Jump to content

sgl_imaging_challenge_banner_31.thumb.jpg.b7a41d6a0fa4e315f57ea3e240acf140.jpg

Yet another eyepiece question (this time for dobs)


Recommended Posts

Hello,

I just started using my new 12" Lightbridge. I want to start my eyepiece collection, but I do not know which ones will be best per focal length. I do not plan on buying Ethos or similar; they seem too expensive for me. I also understand that fast scopes like mine (f/5) can be unforgiving on some eyepieces.

I already have the 10mm Hyperion and 31mm Hyperion Aspheric, so intend to get at least three more pieces in approximately the following sizes: ~24-26mm (2"), ~14-17mm (1.25" or 2"), and ~6-8mm (1.25"). Which ones do you recommend?

P.S. I plan to use the high power ones on the planets, so I have read that the less glass elements used, the better (are we talking orthos or plossls?)

Thanks!

Edited by gustavo_sanchez
Link to post
Share on other sites

You could do worse than getting Hyperions to cover the focal lengths you identify, eg: the 24mm, 17mm and 8mm Hyperions. Their wide field of view helps with an un-driven dobsonian scope as objects stay in the field longer (as you know because you already have some).

Thats just one suggestion - many others will surely now follow !.

Link to post
Share on other sites

If you get both FTR's (14mm, 28mm) you'll have a variety of focal lengths. Check the table on RVO website at the bottom of the Hyperion ep's section. The big benefit is you may not need to buy so many ep's. :eek:

Edited by brantuk
Link to post
Share on other sites

If I intended on having a range of as many as 5 eyepieces for a 12 inch, I would make the two shortest ones of about 8mm (190X) and 5mm (300X), for that sized scope, 190X for planets & X300 for v. close double stars and the planets when seeing allows. Although many seem to cope with seeing all the detail they need with about X200 - perhaps it is my 45 year-old eyes but I feel more comfortable using 300X for most of my high power work.

I do not use powers of less than 90X as light pollution makes the images too lacking in contrast where I live,

Alan

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.