Quote:
Originally Posted by carlstronomy
Great shot keep up the good work. Don't forget with Saturn at the end of its season and now low in the sky you may not squeeze a really great clear image with a 3x barlow. If you have a 2x then have a play with that one first, you may get hung up going round in circles trying to get a good 3x image when seeing will prevent you no mater what you try and all the time you will think you are doing something wrong...
I did this for days!! seeing needs to be real nice for a 3x image on Saturn this year.
Carl
|
Hi Carl - good advice in general. But don't forget your Celestron is f/10, which the 3x Barlow would bump up to f/30 which as you say might be a big ask with Saturn low in the sky. Your 2x Barlow gives an effective focal length of f/20.
Jsaon, on the other hand, has a NexStar 130 which is only f/5. Using the 3x will put him at f/15, which is ideal given the conditions.