When the Milky Way starts popping up again, I want to do some very wide angle shots. I have a Nikon Z camera in which I might go and buy a 50mm F/1.8S prime lens. The special thing about this lens is that it has a short backfocus, and so can only be used with the Z camera and not the mono camera. I already have a whole bunch of F lenses, mono cooled astro camera + filter wheel, and then a bunch of actual telescopes. The widest of the telescopes is a Williams Optics GT71, which is 336mm focal length.
Now the nice thing about the F lenses is that there is enough back focus that I can use the filter wheel + mono camera for narrowband. I used the Z camera for the first few weeks of my learning, but then quickly moved on to the mono camera. So I don't fully know what the Z camera is capable of.
With all that said, I guess my choice on which to use depends on:
- Read noise of Nikon Z vs cooled camera
- Dark noise
- (also the Z is full frame and the mono camera is micro 4/3)
- whether any of the wide angle shots are done in narrowband
- The mono camera + filter wheel can correct for some lens defects, like different focal lengths for each color
Any other factors to consider?