Zeiss eyepiece nomenclature ?
- StarBru
- Articles: 0
- Posts: 662
- Joined: Mon May 13, 2019 1:53 am
- 4
- Location: Arizona, USA
- Status:
Offline
-
TSS Awards Badges
Zeiss eyepiece nomenclature ?
For example, how do I find out the focal length if the eyepiece only has the following information: Kpl 10x, Kpl 16x. Or K 5x. Or MF Projektiv 4.1 or 6,3. I have found others that are designated as C-10x, PK-10x, K-18, Homal II f = -70, etc.
I found one that was K 7x and focusable, 23,2mm. Does that mean it is 23.2mm focal length?
Thanks!
Bruce
Refractors: Meade AR-5 127mm f/9.3, Meade ST-80 f/5 and Meade 60mm f/12, Jason 60mm f/15 #313, Jason 60mm f/12 #306 S7, Bushnell Sky Chief III 60mm f/15.
Reflectors/Catadioptrics: Meade 10" F/4 Schmidt-Newtonian, Galileo 120mm f/8.3 Newtonian, Meade 2045D 4" f/10 SCT, Meade ETX-90EC f/13.8 & Sarblue 60mm f/12.5 Maksutov-Cassegrains.
Mounts: Skywatcher EQ6-R Pro & Meade LXD55 Equatorial mounts, ES Twilight II and Meade 2102 ALT/AZ mounts, a modified 10" SkyQuest Dobsonian mount, various 60mm EQ mounts.
Misc: Celestron 20x80mm binoculars, Revolution II Imager/accessories, & lots of optical accessories/eyepieces.
Projects: 8" f/2.9 and 65mm f/10 reflectors, Dobson-style binocular mirror mount.
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 5
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Here is a link to the Zeiss nomenclature:
https://www.zeiss.com/microscopy/us/sol ... lanes.html
As you can see things are done differently in microscopy. In any case a K-7x would have a 35.7 mm focal length.
- Lady Fraktor
- Articles: 0
- Posts: 10035
- Joined: Mon Apr 29, 2019 9:14 pm
- 5
- Location: Slovakia
- Status:
Offline
Re: Zeiss eyepiece nomenclature ?
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1000101)
The only culture I have is from yogurt
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 5
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Yes. Divide 250mm by the eyepiece magnification to get the eyepiece focal length. For the K-7x that gives the result I note above.Lady Fraktor wrote: ↑Wed Apr 07, 2021 10:07 pm 250 is the most commonly used number for working out microscope eyepieces.
- StarBru
- Articles: 0
- Posts: 662
- Joined: Mon May 13, 2019 1:53 am
- 4
- Location: Arizona, USA
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Thank you, that explains it for me! Now I see that the 23,2mm is listed as the diameter! Sorry, I misread it.notFritzArgelander wrote: ↑Wed Apr 07, 2021 9:52 pm The standard is that Zeiss uses a fixed 250mm objective focal length. So a 25mm fl eyepiece gives a magnification of 10x. So a 7x eyepiece should have a focal length of 35.7 mm. So I am puzzled by your report of 23.2 and suggest you perhaps measured something other than the true focal length.
Here is a link to the Zeiss nomenclature:
https://www.zeiss.com/microscopy/us/sol ... lanes.html
As you can see things are done differently in microscopy. In any case a K-7x would have a 35.7 mm focal length.
Refractors: Meade AR-5 127mm f/9.3, Meade ST-80 f/5 and Meade 60mm f/12, Jason 60mm f/15 #313, Jason 60mm f/12 #306 S7, Bushnell Sky Chief III 60mm f/15.
Reflectors/Catadioptrics: Meade 10" F/4 Schmidt-Newtonian, Galileo 120mm f/8.3 Newtonian, Meade 2045D 4" f/10 SCT, Meade ETX-90EC f/13.8 & Sarblue 60mm f/12.5 Maksutov-Cassegrains.
Mounts: Skywatcher EQ6-R Pro & Meade LXD55 Equatorial mounts, ES Twilight II and Meade 2102 ALT/AZ mounts, a modified 10" SkyQuest Dobsonian mount, various 60mm EQ mounts.
Misc: Celestron 20x80mm binoculars, Revolution II Imager/accessories, & lots of optical accessories/eyepieces.
Projects: 8" f/2.9 and 65mm f/10 reflectors, Dobson-style binocular mirror mount.
- StarBru
- Articles: 0
- Posts: 662
- Joined: Mon May 13, 2019 1:53 am
- 4
- Location: Arizona, USA
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Thanks!
Refractors: Meade AR-5 127mm f/9.3, Meade ST-80 f/5 and Meade 60mm f/12, Jason 60mm f/15 #313, Jason 60mm f/12 #306 S7, Bushnell Sky Chief III 60mm f/15.
Reflectors/Catadioptrics: Meade 10" F/4 Schmidt-Newtonian, Galileo 120mm f/8.3 Newtonian, Meade 2045D 4" f/10 SCT, Meade ETX-90EC f/13.8 & Sarblue 60mm f/12.5 Maksutov-Cassegrains.
Mounts: Skywatcher EQ6-R Pro & Meade LXD55 Equatorial mounts, ES Twilight II and Meade 2102 ALT/AZ mounts, a modified 10" SkyQuest Dobsonian mount, various 60mm EQ mounts.
Misc: Celestron 20x80mm binoculars, Revolution II Imager/accessories, & lots of optical accessories/eyepieces.
Projects: 8" f/2.9 and 65mm f/10 reflectors, Dobson-style binocular mirror mount.
- StarBru
- Articles: 0
- Posts: 662
- Joined: Mon May 13, 2019 1:53 am
- 4
- Location: Arizona, USA
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
That tells you how much microscope experience I have!!!! Good to know finally!Lady Fraktor wrote: ↑Wed Apr 07, 2021 10:07 pm 250 is the most commonly used number for working out microscope eyepieces.
Refractors: Meade AR-5 127mm f/9.3, Meade ST-80 f/5 and Meade 60mm f/12, Jason 60mm f/15 #313, Jason 60mm f/12 #306 S7, Bushnell Sky Chief III 60mm f/15.
Reflectors/Catadioptrics: Meade 10" F/4 Schmidt-Newtonian, Galileo 120mm f/8.3 Newtonian, Meade 2045D 4" f/10 SCT, Meade ETX-90EC f/13.8 & Sarblue 60mm f/12.5 Maksutov-Cassegrains.
Mounts: Skywatcher EQ6-R Pro & Meade LXD55 Equatorial mounts, ES Twilight II and Meade 2102 ALT/AZ mounts, a modified 10" SkyQuest Dobsonian mount, various 60mm EQ mounts.
Misc: Celestron 20x80mm binoculars, Revolution II Imager/accessories, & lots of optical accessories/eyepieces.
Projects: 8" f/2.9 and 65mm f/10 reflectors, Dobson-style binocular mirror mount.
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 5
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Sorry I am less help here. Maybe @j.gardavsky gardavsky who is much better versed in microscopy can help. I could guess that the K is for Kellner and the C is for a simple convex lens? But these are worthless guesses. Don't buy them unless someone with a better grasp of microscopy chimes in.
- Lady Fraktor
- Articles: 0
- Posts: 10035
- Joined: Mon Apr 29, 2019 9:14 pm
- 5
- Location: Slovakia
- Status:
Offline
Re: Zeiss eyepiece nomenclature ?
https://www.cloudynights.com/topic/5119 ... elescopes/
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1000101)
The only culture I have is from yogurt
- j.gardavsky
- Articles: 0
- Posts: 711
- Joined: Mon Sep 23, 2019 1:52 pm
- 4
- Location: Germany
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Zeiss Jena (CZJ) and West eyepieces:notFritzArgelander wrote: ↑Wed Apr 07, 2021 11:16 pmSorry I am less help here. Maybe @j.gardavsky gardavsky who is much better versed in microscopy can help. I could guess that the K is for Kellner and the C is for a simple convex lens? But these are worthless guesses. Don't buy them unless someone with a better grasp of microscopy chimes in.
CZJ Homal is the negative focus projective lens assembly, a predeccesor of the barlows for imaging, and conceptually it is also a predecessor of the field booster in TV Delos
CZJ MF Projektiv is an imaging eyepiece
CZJ PK and K are Abbe orthos with the planar (P) and with the CVD correction (K). It is the only Zeiss Abbe ortho (field stop - 3 - 1) for the microscopes since the old Zeiss times, and it corrects the residual chromatic aberration of the fuoride microscope objectives. The PK have been manufactured as a complete set of focus lengths, and all of them Abbes.
Zeiss West Kpl, C are the Zeiss West versions of the correcting (CVD), and eventually planar eyepieces. Their different focus lengths used to have different optics designs.
Otherwise, I have put into the denis' thread on the CN more infos and technical specs, scroll through https://www.cloudynights.com/topic/5119 ... pes/page-9
In my collection, I have some of these Zeiss West eyepieces manufactured in Göttingen still boxed and unused, obtained from the surplus reserves in Germany,
https://www.cloudynights.com/gallery/im ... -pl-10x23/
https://www.cloudynights.com/gallery/im ... -44-40-34/
https://www.cloudynights.com/gallery/im ... 16-455048/
Together with others, they document the product and devolpment history of the Göttinger designs throughout two generations of the glass materials - before 1990, and since 1990.
Best,
JG
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
- StarBru
- Articles: 0
- Posts: 662
- Joined: Mon May 13, 2019 1:53 am
- 4
- Location: Arizona, USA
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Refractors: Meade AR-5 127mm f/9.3, Meade ST-80 f/5 and Meade 60mm f/12, Jason 60mm f/15 #313, Jason 60mm f/12 #306 S7, Bushnell Sky Chief III 60mm f/15.
Reflectors/Catadioptrics: Meade 10" F/4 Schmidt-Newtonian, Galileo 120mm f/8.3 Newtonian, Meade 2045D 4" f/10 SCT, Meade ETX-90EC f/13.8 & Sarblue 60mm f/12.5 Maksutov-Cassegrains.
Mounts: Skywatcher EQ6-R Pro & Meade LXD55 Equatorial mounts, ES Twilight II and Meade 2102 ALT/AZ mounts, a modified 10" SkyQuest Dobsonian mount, various 60mm EQ mounts.
Misc: Celestron 20x80mm binoculars, Revolution II Imager/accessories, & lots of optical accessories/eyepieces.
Projects: 8" f/2.9 and 65mm f/10 reflectors, Dobson-style binocular mirror mount.
- Michael131313
- Articles: 0
- Posts: 969
- Joined: Sun May 12, 2019 5:39 pm
- 5
- Location: San Jose del Valle , Nayarit, Mexico
- Status:
Offline
Re: Zeiss eyepiece nomenclature ?
- j.gardavsky
- Articles: 0
- Posts: 711
- Joined: Mon Sep 23, 2019 1:52 pm
- 4
- Location: Germany
- Status:
Offline
-
TSS Awards Badges
Re: Zeiss eyepiece nomenclature ?
Hello Bruce,
the Zeiss West E-Pl and W-Pl can be found preowned on the eBay in Germany for less than what you pay for a new TV Plössl,
https://picclick.de/Okular-zeiss-e-pl-1 ... 31654.html
and similarly the Leica
https://www.ebay.de/itm/174200849433?&m ... 0dc3732fd3
With the Leica eyepieces it is important to check out where they have been manufactured, as some of the manufacturing has moved to the Leica plant in Singapore, and they have other glass materials inside.
Best,
JG
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute