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originally posted by: tanka418
Sometimes I assume too much...
I am a software developer, developing a bit of software, and need this in either a CSV, SQL, or some easy to understand text file.
This will go into software I'm developing for my micro-observatory...
originally posted by: CraftBuilder
originally posted by: tanka418
Sometimes I assume too much...
I am a software developer, developing a bit of software, and need this in either a CSV, SQL, or some easy to understand text file.
This will go into software I'm developing for my micro-observatory...
Are you aware that there are a number of really good freeware packages out there for running an observatory? They provide automatic tracking, imaging modeling and simulation, target wiki etc.
originally posted by: CraftBuilder
a reply to: tanka418
Yeah, the guides built into the mount firmware is just a courtesy package so that you don't have to carry a tablet into the field. Its never very comprehensive.
Try these on for size:
www.stellarium.org...
www.ap-i.net...
And as a bonus here is a great, simple stacking program that I use all the time:
www.startrails.de...
originally posted by: CraftBuilder
That makes it clearer now.
You probably wont find what you are looking for on ATS. I would suggest at the very least the main ATM sites but you probably have to query some people at the world class astrophysics sites.
PS: I sometimes hit some luck in the science section of Reddit.
originally posted by: ngchunter
originally posted by: CraftBuilder
That makes it clearer now.
You probably wont find what you are looking for on ATS. I would suggest at the very least the main ATM sites but you probably have to query some people at the world class astrophysics sites.
PS: I sometimes hit some luck in the science section of Reddit.
There are some of us here who have a great deal of expertise in astronomy.
Here is the complete Hipparcos catalog OP, in several parts. First here is the guide to the data:
www.rssd.esa.int...
And here is the actual data:
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
originally posted by: tanka418
What I don't have is a table that translates common star names into a Hipparcos identifier, well beyond the 410 stars that I currently have in an unidentified table set...I need a better dataset for this...
originally posted by: tanka418
originally posted by: ngchunter
originally posted by: CraftBuilder
That makes it clearer now.
You probably wont find what you are looking for on ATS. I would suggest at the very least the main ATM sites but you probably have to query some people at the world class astrophysics sites.
PS: I sometimes hit some luck in the science section of Reddit.
There are some of us here who have a great deal of expertise in astronomy.
Here is the complete Hipparcos catalog OP, in several parts. First here is the guide to the data:
www.rssd.esa.int...
And here is the actual data:
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
www.rssd.esa.int...
That's very nice...already have that data.
Is there, anywhere, a place that will translate the Hipparcos identifiers into commonly used "star names"? By "a place that will translate" I mean a file, a CSV, SQL, XLS(X), flat text, I'm beginning to not care the format that contains more than the 410 I currently have. By the way...PDF won't work too well...too much "meta" and not enough "meat".
Or is it that there are only 410 stars with "proper names"?
originally posted by: ngchunter
Here's another list already in a copyable format, complete with RA and Dec for cross referencing to Hippacros, also SAO and HD catalog numbers included. Not sure if it's as extensive though:
www.fourmilab.ch...
originally posted by: tanka418
originally posted by: ngchunter
Here's another list already in a copyable format, complete with RA and Dec for cross referencing to Hippacros, also SAO and HD catalog numbers included. Not sure if it's as extensive though:
www.fourmilab.ch...
Of the three links: the first, to a PDF. Contains image data, and is, for the most part only human readable. To construct the necessary software is far too much effort for the return...
The second link is to a broken PDF.
So...it appears that the real answer to my query is that there simply isn't such data extant. Which is actually okay, as long as we "know"...
The use of RA, DECL, and Distance data to "cross reference" these stars should have been avoided by astronomy in general, but, apparently that wasn't thought of.
The whole notion that these entities can have different values for data items based on "when" it was calculated is also a serious hindrance,
originally posted by: tanka418
By the way; have you seen what I'm trying to do? And, what might your thoughts be?
originally posted by: ngchunter
I once created a lunar calculations spreadsheet by scanning very similar tables out of a book, just image data, and then used microsoft software built into windows to perform machine reading of the data to translate it into ASCII text I could import into Excel. It wasn't really that hard.
It's not broken?
Uh, I gave you the data. It's up to you to use it effectively.
Distance isn't an important variable to cross reference the data, just the RA and the Dec. Why should that be "avoided?"
Actually...distance is required; for instance...IF I were to attempt this with the star Sirius, the probability increases to an unacceptable level due to the fact that there are three (3) stars in proximity; Sirius A, Sirius B, Nu2 C.M. all three of these stars have a RA, and Decl that is very close. The main difference between the three is distance, especially where Nu2 C.M. is concerned...it is 64 ly as opposed to 8.
The published values of RA and Decl may not necessarily agree with the computed values, and while the difference will be too small t make a difference to a Human, it will make a difference to a computer...if I calculate to 7 or 8 decimal places, all must agree or there is no match...And since I will be asking SQL Server to use numerical data as a "key" all digits must match very precisely. So, I'll be needing distance to compensate for any computational differences.
Dude. If you're seriously planning to write your own software to remote control an observatory you had better become intimately familiar with the concept of precession and the math involved. Coordinates are always in relation to a particular epoch. Sometimes coordinates are listed at standard epochs like B1950.0 or J2000.0 and sometimes they are listed at the equinox of date. Again, if you're serious about writing your own software to control an observatory you're going to have to be able to calculate for that routinely. I do so myself all the time. Astrometry is routinely performed relative to a standard epoch, but if you want to convert that to a realtime altitude and azimuth relative to the local horizon you're going to have to precess the coordinates.
Yes I am serious about this project. I've been a software engineer for over 40 years, so the precision, math, and other aspects of this project are nothing new...I only need to map out what I need to be doing...and I don't expect it to be easy...I expect and demand serious challenge. I also expect a great deal of what I think of as "FUN".