The number of pages, information, and illustrations are never changed. This one is in phenomenal condition for its age.The Jason Telescopes Techniques guide book is a more common for (2) reasons:1) This 23-page booklet was an unchanged inclusive print that the company included on ALL of their telescope models from 1966 till late 1989. These Jason manuals are pretty rare nowdays because they are printed on very thin paper in which the ink will wear off quickly when subjected to sunlight, moist storage conditions, or dew. In the very earliest examples, it would have been a 20mm huygens.This #307 manual can, therefore, be used for those telescope models mentioned above as their similarities are striking and nearly exact. 965-inch kellner in the 21mm or 20mm focal range. With the original Jason ancestor of the 1960s to mid 1970s, it came with a. 965-inch to 1.25-inch hybrid prism diagonal and then came with a 1.25-inch 25mm or 26mm kellner eyepiece. Again, like the Orion, it was more handsomely updated and also from Towa of Japan.The primary difference of the Orion and Parks versions of the Jason #307 is they featured a. Like the Jason, it was from Towa of Japan.The #307 is also very closely related to the 1989-1997 Parks PRT-2 60mm refractor. From late 1992 till very early 1995, Orion then marketed it as the TeleVista II 60mm. This exact telescope model was updated and then carried by Orion from about 1987-1992 as the TeleVista 60mm. These are both ORIGINAL PRINT and not copies. This auction is for a set of 1970 Jason Empire (Towa of Japan) instructions manuals for their model #307 60mm altazimuth refractor. Item: 194152518234 Jason telescope refractor equatorial Model #307 users manual and guide JAPAN.
0 kommentar(er)
