Quote:
Originally Posted by 5ash
Hi Kevin,
I did a few estimates before I bought it and came to the conclusion it would be at least 2x as fast as the 120ed, however no plug and play as with a refractor! May be worth the effort , will have to see .
Regards philip
|
Refractors have few losses compared to reflectors so it will be very interesting to see the comparison. Comparing to my ED100, it looks to me to be twice as fast, where if no losses were involved it should be 4x. I guess I'll just have to sell the house, buy an APO 8" refractor and live in a tent!
Quote:
Originally Posted by kosh
Very nice for a quickie Kevin. I'm struggling with the collimating too. Spent a while thinking all was good using a laser collimator then realised the secondary is out 
Keep up the good work.
Goran. |
Thanks Goran. I collimate by eye, by star test and by taking a short image with the camera and looking at the star shapes in different parts of the frame. Even then I find it tricky.