1. ## Confused!!!

I just got a Celestron neximage. is 60fps the same as 1/60 of a second? if so how can there be 30fps @ 1/25 of a second the math doesn't equal out. or 60fps at 1/25 etc. etc. etc. Please help!

2. No, I don't think you are confused. You are right, you can't have more frames per second than your exposure time allows, obviously. So if you are exposing for 1/15 sec, you can have 15 frames per second. If you are exposing for 1/60 second, you can have 60 frames per second...but your camera and computer won't go that fast. What is likely happening is you are selecting an exposure time like 1/60 sec, but the camera just can't do more than 25 fps because of data transfer limits, so it has some "dead time" in there for the shorter exposures. SO you are trying for 1/30 sec exposures which should allow 30 fps but it doesn't; the camera maxes at 25 fps.
At least that's how mine behaves. I think. It's been cloudy for two weeks, I may have forgotten how it works it's been so long....

Which software are you using?

3. ## The Following User Says Thank You to alsetalokin For This Useful Post:

Human (06-17-2010)

4. Thank you so much for clearing it up. I drew a diagram and tried to get my girlfriend to tell me i am not crazy. She still says i'm crazy but understood where the confusion was. You cleared it up for me that there is "dead time" thank you!!!

5. .....I just replied to your PM but just saw this also.....although you can vary the framerate and the shutterspeed/exposure in regard to each other the normal thing is to have them identical (ie, if your framerate is 30fps you have exposure 1/30 second etc, etc.)

There are some situations where a slight variation between the 2 can be of (limited) benefit but as the other respondent has said, you will find that wide variations in the values of each setting will not only be detrimental but also create unachievable values (ie, you'll find the actual framerate will be nowhere near the setting you have enabled)