Timeline for What 1° x 1° region is the optically darkest patch in the sky?
Current License: CC BY-SA 4.0
18 events
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| Nov 20, 2022 at 15:05 | comment | added | Barry Carter | github.com/barrycarter/lowestflux/tree/main/barry pretty much answers the question using SQL-like queries on the GAIA site itself. I've requested a pull back to the main repo | |
| S Oct 24, 2022 at 15:06 | history | bounty ended | CommunityBot | ||
| S Oct 24, 2022 at 15:06 | history | notice removed | CommunityBot | ||
| Oct 16, 2022 at 14:56 | comment | added | ProfRob | I rather fancy it will be a square degree in the Taurus molecular cloud - but I'm not really clear what figure of merit you are trying to minimise. Total V-band fliux? I don;t think you can answer this by just summing up bright stars. The log N vs log flux relation is steeper than 1 down to 16th mag or so. But I think looking towards a nearby dark cloud eliminates that problem. | |
| S Oct 16, 2022 at 14:05 | history | bounty started | 2080 | ||
| S Oct 16, 2022 at 14:05 | history | notice added | 2080 | Canonical answer required | |
| Oct 7, 2022 at 17:01 | comment | added | 2080 | @BarryCarter For now I've only checked out regions, not the entire sky. Will return to do that later | |
| Oct 6, 2022 at 12:48 | comment | added | Barry Carter | @2080 Wow, you finished it? | |
| Oct 6, 2022 at 2:35 | comment | added | Barry Carter | github.com/barrycarter/bcapps/blob/master/WORDPRESS/… was on my now-deleted blog once. | |
| Oct 5, 2022 at 1:13 | comment | added | 2080 | @BarryCarter I have put the code here: github.com/void4/lowestflux | |
| Oct 4, 2022 at 12:39 | comment | added | Barry Carter | Are you doing this on github? I'm paralleling your effort (not yet on github) using HYG | |
| Oct 4, 2022 at 11:45 | comment | added | 2080 | @BarryCarter Whether that holds is a pretty interesting question itself! | |
| Oct 3, 2022 at 9:39 | comment | added | Barry Carter | The HYGData set is a lot smaller and easier to filter, but has far fewer stars. Of course, the (extended) Pareto principle might work here: the n brightest stars may provide 99%+ of the brightness for a given grid square. Occupy the Milky Way... sorry :) | |
| Oct 2, 2022 at 21:00 | history | tweeted | twitter.com/StackAstronomy/status/1576678418170757125 | ||
| Oct 2, 2022 at 13:12 | comment | added | 2080 | @BarryCarter I'm currently attempting this with the Gaia (DR1) catalog, however there are a few limitations: the catalog does not include bright stars, and the darkest total flux regions are often caused by nebulas, where the total flux may be different. Filtering this doesn't seem to be easy | |
| Oct 2, 2022 at 10:12 | comment | added | Barry Carter | I agree with @uhoh-- this would be a cool project, but I'm not sure if anyone has made the calculation so far. I'm guessing it would be in the general direction of Fomalhaut (but obviously not including Fomalhaut) since that's the shortest way to leave the galaxy from earth. You could use something like GAIA3 to make the computation, though other sources may work as well. | |
| Oct 2, 2022 at 1:57 | comment | added | uhoh | This is a cool question! I have a hunch there's an answer out there somewhere. One candidate might be the surrounding neighborhood of something like the Hubble Ultra Deep Field (itself only 3 x 3 arcminutes) away from the milky way or other diffuse sources and any particularly bright stars which could induce scattered light artifacts in the telescope. | |
| Oct 2, 2022 at 1:27 | history | asked | 2080 | CC BY-SA 4.0 |