Deeper than 30 minutes?
I think the latest discussion was about much longer sub length, therefore long integration time as a result.
In that regard, the 1600's 2000s exposure time limitation is odd, and that can be an issue if people really need to go deep.
Looking at astrobin I don't see anything past 1800s. I am not saying there aren't any, but it must be rare.
Yes I am talking about those rare projects.😆
But the ability to do well in long exposures and without any hassle should be one of the measures of a good camera. The same reason people pay premium for mounts that can track for long hours without fiddling.
Come to think of it, why so many bought the Polemaster? It is not as if sub arc min PA accuracy is critical for most situations.
If a product can achieve a lot more than what is normally needed, it is a sign of its superior status, and it can come handy when situations arise.
A prefect example when I had a hard time stacking some NB subs because DSS could not find 8 stars to align, I relied on PM's pinpoint PA accuracy made the object and the stars stuck to their positions with accuracy down to pixel level over the entire imaging session, and simply used "no alignment" to stack them with success.
For that occasion, I had to do a few PM runs to get there. Most times there is no need for such effort, but knowing when called for the product can deliver, is a good thing.
Edited by FirstC8, 31 May 2016 - 10:16 PM.