Originally posted by scottab Incredible image, I would love to try something like this with my K1 and D FA 150-450.
I have never used the Astrotracer before.
I have taken multiple night images and stacked them for star trails. So I am somewhat familiar with that part of the process.
Where and when to aim the lens would be the area that I lack the needed knowledge.
Any suggestions to point me in the right direction would be greatly appreciated.
Thanks Scott.
Hi Scott, I am assuming you have an the O-GPS1 unit to enable the astrotracer function. I'm not sure how successful you will be with using the 15-450mm lens. You would probably want to start at the shorter focal length end and work your way up, as the astrotracer works pretty well up to around 200mm, but may not be able to track for long at 450mm. Also, calibrating the O-GPS1 requires rotating/rolling the camera with the unit attached in all three axis, and that may be a little challenging with the big lens attached - be careful! With the K1 you should be able to dial the ISO up reasonably high so as to keep the exposure time down. The only thing to do is to experiment and see what you find works, In order to find things in the sky, there are some good free apps out there for your phone that can help you find objects in the night sky, for example Stellarium (available for android, iOS and for desktop), Sky Map 9android) and many others.
Have fun!
Darryl