Eyepieces for planetary use other than Orthos and Plossls

[Chris]

Thanks Chris, have you directly compared them to the Delos and Radian EPs? I am interested in the short focal lengths from about 8mm down to 3/3.5mm

Regards,

Simon

Hi, I've now received a second hand 14mm Radian so I'll be able to give some kind of comparison at some point

[bomberbaz]

John,

I noticed just looking at your link to the 4mm that it only has a 45 degree FOV, I thought the SLV range was 52 degrees, did I mis-read you review?

Alan

I think Tring Astro have got it wrong Alan. The earlier Vixen LV and NLV versions did provide 45 degrees but that was increased by 5 degrees in the SLV's. The 6, 12.5 and 20mm SLV's that I was sent for review certainly seemed to match the Tele Vue plossls in this respect.

 I have both the LV, NLV and also the SLV & NPL and can confirm all have 50 degree FOV. I would also say that pound for pound, they are amongst the best EP's out there. 

Steve

[Hawk66]

6mm and below have 45 Degree, the rest have 50 -> http://www.vixenoptics.co.uk/Pages/slv_eyepieces.htm

[John]

6mm and below have 45 Degree, the rest have 50 -> http://www.vixenoptics.co.uk/Pages/slv_eyepieces.htm

Well the 6mm Vixen SLV that I had on loan for around 6 months definitely had a 50 degree AFoV. The figures in that table seem to correspond to the specs of the earlier NLV range. I wonder if the data has become muddled up ?

The main Vixen website implies a consistent 50 degrees for the SLV's:

http://www.vixenoptics.com/acc/slv_eyepieces.html

There is a link to an interesting review on the SLV's from that web page as well

[bomberbaz]

Strange controversial stats there from the provider. I can't see why the fov should be lower on the shorter focal Ep,s . Seems to be opposite to what I would expect or am I missing something. ?

[John]

Strange controversial stats there from the provider. I can't see why the fov should be lower on the shorter focal Ep,s . Seems to be opposite to what I would expect or am I missing something. ?

The older NLV range did have a slightly smaller FoV in the shorter focal lengths. The LV range that came before those was similar. The SLV's seem to offer a consistent FoV across the range.

Maybe Vixen have confused themselves ?

[bomberbaz]

Whatever the stats re: the actual fov. Still a cracking piece pf glass

[YKSE]

Can we expect to see a 20mm ES or SLV listed on ABS in a few months?

Looks like the wild guess is not that far off?

[Chris]

Looks like the wild guess is not that far off?

This is true, well guessed The ES100's are super eyepieces in the C8 Edge, but I've just sold the C8 to fund a lathe and tooling so I'm thinking the ES100's wont get much use in the foreseeable future. Most my remaining scopes have 1.25" focusers and I'm enjoying binoviewing more now days.

I might use the money to buy a nice objective lens for a refractor build I've been planning