Hello
I am trying to find an eyepiece which has a 4mm focal length which produces the sweetspot (in terms of magnification) in my refractor for planetary observing.
Consequently, I am interested in anything in the 4mm focal length OR any 8mm eyepiece as well which I can simply connect with my 2x barlow and thus effectively produce the same result of a 4mm focal length.
However, I have one key criteria. I need something which features at least reasonable eye-relief (I am still amenable to suggestions such as plossls etc.) but I think I am now too old for orthos etc
In conjunction with this eyerelief parameter my other preference is towards eyepieces which are physically smaller - however this isn't a deal breaker as there are many great EPs on the larger side which would do the job just fine.
So, some eyepieces which might do the trick include:
4mm Televue Radian
8mm Televue Radian
8mm Televue Ethos
8mm Televue Plossl
8mm Televue Delos
4mm Vixen LV
4mm Vixen NLV
4mm Vixen SLV
These are only examples of eyepieces I can think of off the top of my head - However if you have
ANYTHING which is either 4mm or 8mm which you might consider selling
please send me a PM only