oldfield 發表於 2008-6-18 23:16:08

Testing ScopeStuff Canon EOS-> 2" nose-piece adapter

http://osastrolog.blogspot.com/2008/06/telescopes-with-dslr.html

For telescopes with a 2" focuser, the increase in brightness is quite significant!

mca 發表於 2008-6-19 14:55:45

I would guess 1.25" focuser is good for regular CCD chip size only. For the larger CMOS chip in EOS450 (22 x 14 mm ?) , 1.25" might be too narrow for the FOV.Have you compare standard M42 (1.6") opening ?

AC

oldfield 發表於 2008-6-19 17:22:54

I don't have something in between 2" and 1.25", either 2" unobstructed or 1.25" to T-thread.

mca 發表於 2008-6-19 18:38:54

Perhaps to adhere a "42-mm opening paper mark" inside the 2-inch focuser and try the experiment.

oldfield 發表於 2008-6-19 22:35:26

原帖由 mca 於 2008-6-19 18:38 發表 http://forum.hkas.org.hk/images/common/back.gif
Perhaps to adhere a "42-mm opening paper mark" inside the 2-inch focuser and try the experiment.

Good suggestion, will re-do the whole thing soon.
頁: [1]
查看完整版本: Testing ScopeStuff Canon EOS-> 2" nose-piece adapter