UmbralRaptor changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
<WeylandsWings>
iximeow: if I had said “have you checked on the spider recently” and left it at that, only me you egg and raptor would have gotten it
<iximeow>
lol
<WeylandsWings>
Also it looks like the image is pretty saturated around the bright object. Could it be blooming in a weird way
<iximeow>
that's definitely possible. i haven't seen it on dimmer (but still bright) stars but i'm not yet certain they don't have long enough spikes to see it
<iximeow>
either way, i'd like to find what's doing this :|
<iximeow>
increasingly distrustful of the lrgb filters i have, too. that would be weird here, but not impossible
<iximeow>
actually. if it's a weird polarization(?) thing from the filters i can rule that out by changing the rotation and seeing if the pattern changes.
* iximeow
waits 20 minutes for an answer
<iximeow>
! it does not move with rotation !
<raptop>
I guess that points to the saturation hypothesis
<iximeow>
it could also be a weird defect in the filter. i'm going to see if this remains in non-L
<raptop>
*L*?
<raptop>
As in something near WISE W1 or IRAC channel 1?
<iximeow>
if only. i had a light pollution filter that i thought, sure, what harm is it gonna do rejecting sodium or whatever? and it's a seven slot filter wheel, so what else would i put there?
<iximeow>
(what i would love to put there is a 2" diffraction grating. that would be rad.)
<iximeow>
oh
<iximeow>
this might be the vanes not being perfectly parallel.
<raptop>
hrm
<raptop>
since I don't know Chinese, I assume that the green lines are nebular emission ones, and the orange are common light pollution (eg: sodium and mercury)?
<iximeow>
yeah
<raptop>
It's actually pretty cool that it's possible to make a filter with that response curve
<iximeow>
yeah! i'd love to learn a bit more about filter design one of these days
<iximeow>
my extremely unscientific "draw lines in mspaint" methodology has me thinking that, indeed, the vanes aren't quite in line
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<galois>
title: [2101.05587] HUBS: A dedicated hot circumgalactic medium explorer
<raptop>
(Though that one works pretty well)
* raptop
stabs dielectrics
<raptop>
Don't worry, they're ideal dielectrics in a vacuum, and the one that's giving me trouble right now is even a sphere!
<raptop>
(it's not a cow, though)
<raptop>
Anyway, a point charge q is in free space a distance d from the center of a dielectric sphere of radius a (a < d), and dielectric constant ε/ε0. Find the potential at all points in space as an expansion in spherical harmonics