I have a P45+ in H mount and will be traveling to death valley from the 2nd to the 5th of January. Conveniently the new moon is in this time frame and the skies should be dark.
I do not have much experience with super long (1 hour plus) exposures, but would love to give it a go for star trail photos.
What would the ideal exposure be to not blow out everything and try to get it all in one shot?
I have the 50-110 f3.5-4.5 and 100 f2.2 at my disposal, as well as a CH-910 battery pack to power the back indefinitely. The weather should be around 40 at night, which would provide me with the ability for some clean long exposures, so I would love to try it out.
Any suggestions would be very welcomed. I will most likely be using my 5d Mark II to get some shots as well, but will be bringing my Hasselblad.