I'm primarily an imager, but I'm slowly getting more and more into observation. I a lot of solar in HA. I sometimes look at a planet when they're close. I look at the terminator areas on the moon often. Otherwise, I like wide field DSO, but I realize binoviewers are not useful for that. I've read about binoviewing, but I've yet to try it. I'm not sure I'm ready to put a lot into it just yet. Maybe get a good budget binoviewer and if I really get into it, I can always sell it and move up to something else later on perhaps. I also don't have a ton of eyepieces, but I have a few that I wouldn't mind getting a 2nd of for binoviewing purposes (maybe just 2 sets and call it good).
What I currently have:
Celestron C6 SCT (soon to go up to C11)
* I use this for DSO and lunar and sometimes planets
Celestron Omni XLT 120mm F8.3 Refractor
* I use this for DSO, lunar and planets, but it's main purpose is with a Quark filter (HA) with high resolution solar (which I'd like to use binos for)
Coronado PST Refractor
* Strictly a short HA solar scope, but, I've read you can get adapters to use binoviewers with it from Siberian Optics, which I'd love to try maybe)
Soon I will add a Celestron C11 to my kit. I'm currently saving & shopping for it. So that is also spurring my potential interest to try a binoviewer as I would have access to a brighter view of planets potentially that way.
My current potentially useful eyepieces are the Paradigm Dual ED 1.25" 60 degree FOV eyepieces from Astronomics. I have the 25mm, 8mm and 5mm currently. I'm not sure if doubling any of those up would be ideal with a binoviewer, as I imagine the binoviewer will change the FOV so I may need different eyepieces and it would be different on each scope too. I'm considering picking up a 15mm to join my little kit. So maybe I could get two 15mm's and maybe a 2nd 25mm? The 15mm would be universally useful and provide a good magnification for the C11 as well as for my 120mm refractor with the Quark (4.2x telecentric barlow) for solar to get some 3D proms. Not sure if I should get two 25's or if I should get a 2nd 8mm instead. Don't mind the cost of the eyepieces, they're fantastic and commonly $45 used for any of them.
I guess my next direction is, which binoviewer?
Seems everyone starts with a Williams Optics one as an entry point and then upgrades. I will use them probably way more often with HA solar narrowband, so if that matters, it may not require me to get higher quality glass/mirrors since I will mostly be in narrow band. I will however be interested in using them with the C11 on some planets sometimes maybe.
Will adding a binoviewer basically be like using a short barlow and alter focal length?
Any general advice?
No real budget at this time. Obviously I like the idea of some used W.O. binos around $180 maybe and then buy a few more eyepieces to have a set or two for this. But, maybe there's other things to consider knowing what I have and what I'll do (solar HA)?
Edited by MalVeauX, 31 January 2018 - 09:48 PM.