Greetings, Star Hustlers!
Does anyone know the barrel diameter of the original CRICO eyepieces?
Much Obliged!
Posted 20 January 2025 - 05:17 PM
Greetings, Star Hustlers!
Does anyone know the barrel diameter of the original CRICO eyepieces?
Much Obliged!
Posted 20 January 2025 - 09:03 PM
These came with a 1958 Criterion Dynascope and are 1.25" diameter.
Thanks for the reply.
I'm wondering if they may have had a smaller size for the really early Dynascopes, which I think in addition to being a smaller aperture also used weird eyepieces.
It's possible I might be getting them and later SkyScopes (3" f/12) confused.
Posted 20 January 2025 - 09:10 PM
Posted 20 January 2025 - 09:38 PM
I had a skyscope that I sold with a few eyepieces which weren't a standard telescope barrel diameter. IIRC smaller that .965. Microscope eyepiece size perhaps?
There is a brass fitting inside the draw tube that, if you could remove it without breaking the delicate old Zymac casting would bring it up to 0.965". I mean, it's just barely there.
Amazingly, my SkyScope actually survived my disastrous move. I need to stiffen up the draw tube, but it is still usable.
Posted 21 January 2025 - 06:05 PM
I just measured an old Criterion 16.3mm Erfle. 0.945". I expect the old Crico are the same.
Posted 21 January 2025 - 06:33 PM
I just measured an old Criterion 16.3mm Erfle. 0.945". I expect the old Crico are the same.
Ah, thank you!
Posted 30 January 2025 - 11:59 AM
Going to bump this up.
I purchased the CRICO eyepieces, a 9mm AR and 18mm H, and they worked perfectly in the old SkyScope. The 9mm has a small clam chip, but is still amazingly clear. Also, a number of small eyepiece parts arrived with them.
General Astronomy →
Beginners Forum (No Astrophotography) →
8" dob Looking for best budget - eyepeiceStarted by Rcr0027 , 05 Feb 2025 ![]() |
|
![]()
|
||
Equipment Discussions →
Eyepieces →
I believe I have a MoonfishStarted by Ric Whatley , 05 Feb 2025 ![]() |
|
![]()
|
||
Equipment Discussions →
Eyepieces →
Stacking TV Dioptrx on Ethos EP ?Started by Astro Chimp , 02 Feb 2025 ![]() |
|
![]()
|
||
Equipment Discussions →
Eyepieces →
Proper desiccant strategy during EP storageStarted by TicoWiko , 02 Feb 2025 ![]() |
|
![]()
|
||
General Astronomy →
Beginners Forum (No Astrophotography) →
Eyepiece AberrationsStarted by Garrubrations , 02 Feb 2025 ![]() |
|
![]()
|
![]() Cloudy Nights LLC Cloudy Nights Sponsor: Astronomics |