11-14-2024, 02:26 AM
Gentlemen,
Using intercept method I came to kind of strange situation. Let me be as brief as possible and to the point.
Calculating LHA for observed star. Western longitude, north latitude. Wrote formula to calculate it based on grpaphical representation og GHA Aries, SHA of the star and longitude ( assumed) . I got LHA but depending on the order I added and subtracted data assumed longitude became different. But LHA was the same.
Now, specifics:
LHA of the star = GHA Aries +SHA of the star -360- Longitude assumed = (GHA Aries - Longitude assumed) + SHA - 360. ( I just made a drawing to visualize the data , and from that drawing came those two equations.)
Again, results are identical, but assumed longitude in this particular case is different in about 25 minutes of longitude.
I think, I asked this question before, but can't find the answer.
So when I start to plot this star position, different longitudes assumed made it a little bit difficult to do it right the first time. Of course, I can plot two positions for the same star and see which one makes more sense, but maybe there is a simple way to go through this.
Thank you.
Using intercept method I came to kind of strange situation. Let me be as brief as possible and to the point.
Calculating LHA for observed star. Western longitude, north latitude. Wrote formula to calculate it based on grpaphical representation og GHA Aries, SHA of the star and longitude ( assumed) . I got LHA but depending on the order I added and subtracted data assumed longitude became different. But LHA was the same.
Now, specifics:
LHA of the star = GHA Aries +SHA of the star -360- Longitude assumed = (GHA Aries - Longitude assumed) + SHA - 360. ( I just made a drawing to visualize the data , and from that drawing came those two equations.)
Again, results are identical, but assumed longitude in this particular case is different in about 25 minutes of longitude.
I think, I asked this question before, but can't find the answer.
So when I start to plot this star position, different longitudes assumed made it a little bit difficult to do it right the first time. Of course, I can plot two positions for the same star and see which one makes more sense, but maybe there is a simple way to go through this.
Thank you.