Two questions on astro photography

[battletone]

Also that small gap you have between your images serves another important role. It keeps the sensor cool. You can damage your camera if you do one continuous exposure for long enough. Sensors get very hot.

Really? I think that gap is the same as if I was shooting at 3.5FPS. I didn't use any kind of time delay. So if that is all it needs to cool off, that is amazing in and of itself.

I might give it a go manually aligning my photos from the other night. I mean, if people were able align film, I would think I can pixel peep my alignment every bit as accurately.
Roughly how many photos are needed to even warrant this process though? Would 5-7 photos be a noticeable improvement?

 

[battletone]

http://www.thephotoforum.com/forum/...n-these-results-i-should-get.html#post1755454

I went ahead and started a thread for an image I made. Its related to this but I think this thread is far enough off along I won't get as much feedback as new thread for the image.

 

[Garbz]

Ok maybe you should put like a second long gap in then