Obviously it is... Heres the metadata for the 2nd cropped 405 shot:
Exif.Image.Make = Canon
Exif.Image.Model = Canon EOS-1D Mark IV
Exif.Image.Orientation = 1
Exif.Image.RowsPerStrip = 171
Exif.Image.StripByteCounts = 131328
Exif.Image.Artist = Ant
Exif.Image.ImageWidth = 5120
Exif.Image.ImageLength = 3318
Exif.Image.BitsPerSample = 16
Exif.Image.Compression = 7
Exif.Image.Copyright = Anthony
Exif.Image.0xc614 = Canon EOS-1D Mark IV
Exif.Image.0xc68b = _DM49618.CR2
Exif.Photo.ExposureTime = 266/1
Exif.Photo.FNumber = 56/10
Exif.Photo.ExposureProgram = 9
Exif.Photo.ISOSpeedRatings = 200
Exif.Photo.DateTimeOriginal = 2013:01:01 22:09:29
Exif.Photo.DateTimeDigitized = 2013:01:01 22:09:29
Exif.Photo.ShutterSpeedValue = -8055282/1000000
Exif.Photo.ApertureValue = 4970854/1000000
Exif.Photo.ExposureBiasValue = 0/1
Exif.Photo.MaxApertureValue = 3/1
Exif.Photo.MeteringMode = 5
Exif.Photo.Flash = 0
Exif.Photo.FocalLength = 200/1
Exif.Photo.SubSecTimeOriginal = 97
Exif.Photo.SubSecTimeDigitized = 97
Exif.Photo.FocalPlaneXResolution = 4896000/1290
Exif.Photo.FocalPlaneYResolution = 3264000/836
Exif.Photo.FocalPlaneResolutionUnit = 2
Exif.Photo.CustomRendered = 0
Exif.Photo.ExposureMode = 0
Exif.Photo.WhiteBalance = 0
Exif.Photo.SceneCaptureType = 0
Exif.Photo.0xa432 = 70/1 200/1 0/0 0/0
Exif.Photo.0xa434 = EF70-200mm f/2.8L IS USM
As you can see the exposure was 266 seconds, which was plenty of time for some star trails...Don't forget also the photo was cropped to show the top of the mountain, so we have also zoomed in on the trails.
????????
Of course you can set up your tripod where ever you wish. Yes in a perfect world it would be away from everything, on solid ground, on a very sturdy tripod, in a sheltered area and with no seismic activity lol, but we cant always have the ideal conditions...Obviously here the vibrations have not affected the photo anyway. If they had, the image would be blurred and sharpness would suffer. You seem to forget that if the camera were to have moved the distance you suggest during the photo, to create those trails, then the whole photo would be a blurred mess...
Well with the exposure time that would be a little difficult. Perhaps we should have stopped the earths rotation for a few mins, just for that perfect photo... Oh well maybe next time. Sorry :beer:
First i appologize,i dont mean to question sth, but i misunderstand or forget that they r from one pics that took on ur balcon.yea, it is a far distance and all the things matched, the star trail(about 1 degree),the mountain.Second ,u did a great job. and third, thx for sharing and discussing, everything.