Hi Andrew
Wow, that is fabulous - thank you.
I downloaded the file and opened it in XLS and it looks like I have all that I need – thanks!
Has an SDE engineer, who is independent of the design, performed a Peer Review?
If so I can provide a QA sign off.
Cheers
Dennis
EDIT:
Wow - I just sorted the data and saw some z>=7 values.
Them Quasars sure are distant!
Thanks again Andrew, much appreciated.
Cheers
Dennis
Quote:
Originally Posted by middy
Already all over it, Steve.
It sounded like a fun little project, and I do have to brush up on my Python skills for something we are doing at work at the moment.
The link Steve posted has the column list. I pulled out SDSS_NAME, RA, DEC, Z_QN into a CSV file located here on my OneDrive:
https://1drv.ms/f/s!AkelT5umKabLhesM...fzgVw?e=wOWekC
There are a total of 1,440,614 records so I only pulled out the quasars with a redshift > 3, to limit the file size. (There are 'only' 75,000 of those)
The RA and DEC values are in decimal degrees. If you want me to convert it to HH:MM:SS and DEG:MM:SS, or you want a different redshift start value, or to narrow the RA range down to a specific area of the sky, let me know. I can slice and dice it any way you like.
Enjoy! |