24 Jan
2011
24 Jan
'11
2:09 p.m.
Hi, all I have a question. I just acquired a 13.1 F4.5 Coulter dob. I am thinking about just using the mirror out of it and making my own version of a Obsession looking dob. Is there a good way to tell if the mirror is worth the effort to make a dob built around it? I have it out of the telescope and I can not see any defects so far in the mirror. ( have not looked really close at it yet.) The Mirror sets in a kind of sling in the tube. Very Strange setup. I guess it was the way they made them in early 1980 or so. If some one has a mirror cell to fit this size of mirror I would love to hear from you. I really do not know what I should be looking for to check the mirror. Any Suggestions would be appreciated. Mark