The Pod Bay

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peterh

07:51

JWST mirror segments deployed

3 days and L2 orbit insertion burn

(also A3, A6 segments are deployed)

And then... guys can start to initialize the things on the scope + calibrating the mirror segments, till summer

2 hours later…

Rafa

10:08

I asked this on Astronomy SE, leaving a link here as well in case anyone has some idea what could possibly be going on

Q: Discrepancy between my calculated planet JPL ephemerides and those by Horizons online app

I'm currently using JPL DE440 ephemerides. Following the documentation here, verified with the header file (specially the records in GROUP 1050) for the DE440 ephemerides (file header.440 available here), and using the Clenshaw algorithm to calculate the sum of the Chebyshev approximation, as des...

I've been going through every possible detail for several hours now but cannot find the source of the error... driving me crazy!

7 hours later…

Space Exploration Meta

17:25

Q: Exact process in counting votes for closing a question

When a question goes to a vetting process, I notice that there is a counter called "closed" under the question, but I don't see any counter for the "Leave open". Does this mean that a "Leave Open" does not negate a "close" (during the vetting process)? (which then means that the opinion of a user...