Are the Edmund RKE 8mm, 12mm 15mm and 21.5mm eyepieces parafocal or close to parafocal?
Edmund RKE
Started by solarix, 11/18/2002 12:33AM
Posted 11/18/2002 12:33AM
Opening Post
Posted 11/19/2002 04:27AM
#1
Jerry,
I have 2 sets. They are as perfectly parfocal as any set I've seen. I use them in sets and I use them for binoviewing. I have a 28.7mm and a 15mm that date to the early '80; they are exactly parfocal with my newer ones; I have a similar situation with Televue plossls of different generations that don't fair nearly as well as far as parfocalization. As a point of reference, they are as parfocal as my Brandon set and my TeleVue plossl same generation sets. Clear skies!
I have 2 sets. They are as perfectly parfocal as any set I've seen. I use them in sets and I use them for binoviewing. I have a 28.7mm and a 15mm that date to the early '80; they are exactly parfocal with my newer ones; I have a similar situation with Televue plossls of different generations that don't fair nearly as well as far as parfocalization. As a point of reference, they are as parfocal as my Brandon set and my TeleVue plossl same generation sets. Clear skies!
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