Originally posted by luxordelphi
Originally posted by Phage
reply to post by luxordelphi
What's the problem? 68º is quite close to overhead but it is not directly overhead.
But I forget, you have a problem with spatial relationships.
So 68 degrees is the same as 90 degrees? 76 degrees is the same as 90 degrees? I have a new signature for you: Everything is the same as everything
To our eyes, with out a frame of reference, it can be.
Here is a picture of the night sky at your latitude:
The red dot is 90 deg. The first circle out is 80 deg, and next circle out is 70 deg. The green circle is the Pleiades. This picture is also with a
polar coordinate grid in place, and I have the FOV set to 130 degrees.
Humans normally have a FOV of 100 deg, so when you look directly over head, most of the horizon is going to either not be very visible, or in your
extreme edge of your vision, making reference very hard. We also of course are not walking around with a polar coordinate grid overlay to see. So let
us take a look again, with the FOV set to 100 deg and the grid removed:
As you can see, judging exactly what degree in declination the Pleiades are becomes much harder.
If you insist that they are at 90 degrees, it would be quite simple for you to prove this if it's true:
Get a camera with a fisheye lens with a FOV of 180 deg, mount it on a tripod with it the camera set to 90 deg so that it's LOS is directly up and
pointed at 90 deg.
Open the shutter for at least 15 seconds. Then upload the raw picture to here and show us.
That would be much better than you just saying that this is what you are seeing. Not because we think you are lying or anything like that, but because
humans are not very good data recorders.
Have 10 people watch the same event, and you'll get 10 different stories as to what they saw.
ETA: by the way, you could do this too for the sunrise and sunsets that you say are "ping ponging" all over the place.
Get a couple of cheap web cams and set them up. Have one directly facing East and one Directly facing West. Alignment of them is crucial however, so
you have to make sure you are making them line directly up with East and West.
Note the camera's FOV angle. Now you know how many degrees your pictures are. Document each sunrise and sunset. The pictures should show you how many
degrees the sun is from East and West (to the north of them).
There are plenty of books and online sites that can show you how many degrees north of East and West the sun should be on any given date for your
exact latitude and Longitude, along with sunrise and sunset times. Keep a journal and log with these pictures.
If the sun is off from where it is suppose to be, you'll have your proof, as long as you can show that you have set everything up correctly.
edit on 30-10-2012 by eriktheawful because: (no reason given)