I want to wide field image
Posted 11 December 2012 - 07:22 PM
Posted 11 December 2012 - 07:32 PM
Posted 11 December 2012 - 07:33 PM
Field of View = 3438 arcminutes X pixel array dimension / focal length
You need to do it for both length and height unless you have square pixels.
Posted 11 December 2012 - 09:04 PM
Posted 11 December 2012 - 10:39 PM
And for really wide shots I have been experimenting with a Pentax SP1000 55mm lens hooked up to my Atik314L+ to get this wide field of the Orion and Horsehead area.
So where there is a will there is a way!
Posted 11 December 2012 - 11:16 PM
Are you using the 314E or the 314L+?
I'm using the 314E paired with an Astro-Tech AT65EDQ. It has a focal length of 422mm so I get a field of view of 39.3' x 52.7'. The 314L+ with this scope covers 54.5' x 73', not quite enough to fully cover the Pleiades. As others have pointed out, the calculations are quite simple, but you can also use tools like CCDCalc (free) which will show you a picture of certain objects with a reference frame showing what area your camera / scope combination will cover.
If you are using the one-shot-color version of the 314, you might look into one of the camera lens couplers out there, something like this:
With a 55mm lens the 314E would cover 5° x 6.7° and the 314L+ would cover 7° x 9.3°.