Follow the Path.... Follow the Path.... Follow....

JimFox

Moderator
Staff member
This is in Theodore Roosevelt National Park in North Dakota. I had one camera aimed to the SE to capture the Milky Way Theodore Roosevelt National Park | Focal World And so I had this one pointed North to capture the stars roatating around Polaris. I purposely composed this so that Polaris was off to the upper right compared to that small little peak. I thought they would balance well. I had walked this short path earlier and thought it would also be cool if I could get the pathway into the image.

This image consists of 40 images that were stacked in Startrails, a free program you can download. I have been using it for years. It also has an option where it will make the leading edge of the star trail brighter and the trailing end to fade away. So I chose that for this. I have several hours of data I could have turned into Star trails, but a test of just 1 hour worth of data resulted in a sky that had almost no blue as the stars when turning filled up the whole sky. So I tried 40 and liked the look.

25 secs
ISO4000
f2.8
Nikon D810
Sanyang 14mm f2.8 Mk2

There was no moon on that night. I could have used the ground layer after stacking the 40 images as it cleaned it up pretty nice. But I had an early morning shot before the sun rose that gave me a lot more detail for the ground, so this is an 80% blend in with the existing ground. Since I was stacking anyway, I figured a little blending to bring up the detail in the ground layer was worth it.

As a side note, of the 40 frames, all but 4 of them had airplane trails in it. I was really surprised since being up in North Dakota is like no mans land, I didn't think there would be many airplanes flying at night. So I had to go through each of the 40 frames by hand to clean up those airplane trails as they look horrible in the star trail image if not removed, and it would be cleaner to remove them before stacking then after.

Also, I noticed a lot, and I mean a lot of meteors in those 40 frames also. Maybe 10 to 12? I also cleaned those out as I wanted the clean star trail look. But I might go back and blend in some of those meteors into this to see how that looks. I don't know if it would look cool, or be a distraction.

All comments are welcome,

Jim

Startrails 40  B1 Frames_dw.jpg
 

Bob

Well-Known Member
Really cool Jim! Are the 40 images a 5 minute exposure or did you go longer?
Bob
 

JimFox

Moderator
Staff member
Really cool Jim! Are the 40 images a 5 minute exposure or did you go longer?
Bob
Thanks so much Bob!

The exposures are just my normal 25 sec long exposures. I have in the past gone with longer ones, but anymore I just go with the 25 sec images as they are more flexible. I can still use them for a pin point star image if I want, or I can mske a timelapse, or like this stack a section of them for star trails.

I did do a night of longer shutter speeds a while ago, thinking it could look cool to see a more streaking light in the time lapse, but when assembled it ended up just looking like the sky was jerking between each frame, it wasn't smooth at all. So I gave up on that idea. :)
 
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Kurt Harrigan

Well-Known Member
I think that ISO 4000 is pretty low, Jim. If I did this shot, say with my old D800, I would have been at at least 8,000 given the other settings. Many times if there is no moon I will shoot at 10,000 or so but it depends on what you are trying to achieve.
 

JimFox

Moderator
Staff member
I think that ISO 4000 is pretty low, Jim. If I did this shot, say with my old D800, I would have been at at least 8,000 given the other settings. Many times if there is no moon I will shoot at 10,000 or so but it depends on what you are trying to achieve.
Thanks Kurt, that's interesting.

ISO 4000 is really high for me. I only moved up to that because this is a new f2.8 lens so I could have another 14mm lens at night. My main Milky Way lens is the Sigma 14mm f1.8 which I shoot at f1.8 or f2.0. But it's $1500, and I couldn't afford a second one, so I picked up a Samyang 14mm f2.8 Mk2 to use as on a 3rd camera body at night.

Normally I shoot the Milky Way at ISO 1600 to 3200 depending on how bright the moon is (that's at f2.0). But the norm is ISO 3200. The last time I had to shoot at ISO 6400 or higher was back quite a few years when I was using my 16-35mm at night which is an f4 lens.

I guess we have different styles or mindsets? I know Kyle shoots similar then to how you do at night, or at least he used to. If I recall Kyle would typically shoot at ISO 6400, but then he would stack his images to remove the noise. For myself though, I have been shooting at ISO 1600 to 3200 at night for years now, and I think my results work. At least, they work for me. And if shooting at higher ISO's works for you (and Kyle) then that's awesome too! :)
 
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