7mm Plossl?

[Renato1]

I've been scouring the internet and Ebay looking for a small inexpensive 7mm plossl. All that I can find are big TMBs and an orthoscopic and 7.5mm plossls.

Is there such a thing as a 7mm plossl?

Or is there something unlucky about them, so that no one makes them?
It just seems odd, there are plenty of 5, 6, 8 and 9mm eyepieces, so how come the 7mm doesn't seem to make the cut?
Cheers,
Renato

[astro744]

See http://www.kkohki.com/English/kkohkiparts.html (Scroll down)

University Optics also used to sell these but they seem to be no longer listed.

[MortonH]

Not as cheap as a Plossl, but the Explore Scientific 6.7mm is possibly the best of their 82D line.


http://www.vtioptics.com.au/explore-scientific-82d-6-7mm-nitrogen-purged-eyepiece-a-premium-ep-just-189-delivered-within-australia-check-out-our-other-explore-scientific-eyepieces/

[astro744]

Sorry. These are Orthoscopics.

[Renato1]

$98+postage. I'm sure the HD orthos are very good, but the field of view is a bit narrow.
Darn interesting site though. Thanks.
Regards,
Renato

[Renato1]

Thanks, but a tad expensive, I'm just after 7mm to give just over 200X in my 127mm Mak.
Cheers,
Renato

[MortonH]

Do you have existing eyepieces around 14mm or 21mm that you could Barlow?

[AG Hybrid]

But, worth every penny. I'm yet to hear of anyone with buyers remorse after getting a 6.7mm ES

[Renato1]

Hi Morton,
Thanks. I could probably get something close to 7mm with one of my Barlows, but I was after something small - something between my 6mm Plossl and 8mm RKE.

I actually have a 14mm eyepiece, but it's a series 4000 Meade Ultrawide which weighs heaps.

Though if I can't find a small 7mm plossl, I may well have to resort to the next smallest thing I have - a 12mm Kong and Meade 1.7X shorty Barlow.
Cheers,
Renato