raptop 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
<egg|laptop|egg_>
> just airdrop them
* egg|laptop|egg_
slaps mofh with the ∆𝑣 between the INTEGRAL orbit and a reentering trajectory
<egg|laptop|egg_>
(admittedly it's highly eggscentric so maybe at apogee it's OK?
<egg|laptop|egg_>
iximeow: how do you focus with a CCD
<egg|laptop|egg_>
my jupiter is stupidly blurry,
<iximeow>
egg: i've never been able to focus very well with planets, i'm not sure how people do particularly good images
<iximeow>
i think one of the things is just taking lots of short exposure images and hoping there's some where atmosphere plays nice
<egg|laptop|egg_>
alternatively, did venus acquire moons
<iximeow>
um
<egg|laptop|egg_>
iximeow: the bayer filter is very obvious on planet raws :-p
<iximeow>
oof
<iximeow>
egg: there was a 61.2mp full frame sensor announced recently and i'm more excited than i should be
<iximeow>
i'm gonna get the mono one and stop worrying about bayering :3
<egg|laptop|egg_>
yeah not even a trace of bands on those jupiter images
<iximeow>
ouch
<iximeow>
maybe seeing issues?
<egg|laptop|egg_>
iximeow: yeah the focus seems to be meh but not catastrophic, the moons are 10-20 pixels across and probably as good as they'll get with the atmosphere
<iximeow>
pixel size?
<egg|laptop|egg_>
(pixels counted in the raw image and also i can't count)
<kmath>
<spacermase> Chemistry Twitter: is there a simple way to convert Berman-Brown Gibbs free energy values into standard Gibbs free… https://t.co/FsNg54GvMc
<UmbralRaptor>
(in case anyone here knows)
<mofh>
UmbralRaptor: I mean what the heck is "standard" Gibbs free energy?
<mofh>
anyhow I used to actually know how to convert between conventions off the top of my head but it's been many, many years
<mofh>
also I swear I've only ever seen Berman-Brown used in geochemistry for w/e reason.
<UmbralRaptor>
hrm
<UmbralRaptor>
Uh, she's doing stuff related to geochemistry
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<_whitenotifier-5dfc>
[Principia] eggrobin labeled pull request #2151: Use Ephemeris::Guard to protect the computation of the prognostication - https://git.io/fjnzH
<uovo>
wait what, i thought i had labeled this pull request yesterday night
<egg|laptop|egg>
iximeow: um, my images are completely inconsistent with my darks
<egg|laptop|egg>
i think i might have fucked up the camera settings
<_whitenotifier-5dfc>
[Principia] pleroy synchronize pull request #2151: Use Ephemeris::Guard to protect the computation of the prognostication - https://git.io/fjnzH
<_whitenotifier-5dfc>
[Principia] pleroy commented on pull request #2151: Use Ephemeris::Guard to protect the computation of the prognostication - https://git.io/fjnob
<_whitenotifier-5dfc>
[Principia] pleroy commented on pull request #2151: Use Ephemeris::Guard to protect the computation of the prognostication - https://git.io/fjnKz
<_whitenotifier-5dfc>
[Principia] pleroy commented on pull request #2151: Use Ephemeris::Guard to protect the computation of the prognostication - https://git.io/fjn6q
<_whitenotifier-5dfc>
[Principia] pleroy synchronize pull request #2151: Use Ephemeris::Guard to protect the computation of the prognostication - https://git.io/fjnzH
<_whitenotifier-5dfc>
[Principia] pleroy closed pull request #2151: Use Ephemeris::Guard to protect the computation of the prognostication - https://git.io/fjnzH
<_whitenotifier-5dfc>
[Principia] pleroy pushed 6 commits to master [+0/-0/±27] https://git.io/fjnPq
<_whitenotifier-5dfc>
[Principia] pleroy a09adf9 - Use the guards and remove check in the Ephemeris.
<_whitenotifier-5dfc>
[Principia] pleroy 24a8aca - Merge branch '2090' into 2090b
<_whitenotifier-5dfc>
[Principia] pleroy pushed 2 commits to master [+0/-0/±8] https://git.io/fjnP7
<_whitenotifier-5dfc>
[Principia] pleroy b043505 - Speed up debug tests.
<_whitenotifier-5dfc>
[Principia] pleroy 80be4b3 - Merge pull request #2152 from pleroy/BaseTests Speed up debug tests
<egg|laptop|egg>
iximeow: meow
<egg|laptop|egg>
iximeow: the cluster is M107
<egg|laptop|egg>
iximeow: the instrument is a ZWO ASI178MC-cool
<egg|laptop|egg>
iximeow: banding isn't an issue when I don't screw up camera settings so that I don't have appropriate darks
<_whitenotifier-5dfc>
[Principia] eggrobin commented on issue #1841: Show ☊ and ☋ with respect to the equator in body-centred inertial frames - https://git.io/fjnXW
<_whitenotifier-5dfc>
[Principia] eggrobin edited a comment on issue #1841: Show ☊ and ☋ with respect to the equator in body-centred inertial frames - https://git.io/fjnXW
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<_whitenotifier-5dfc>
[Principia] eggrobin opened pull request #2153: A better reference plane for the the ECI etc. frames. - https://git.io/fjnDE
<_whitenotifier-5dfc>
[Principia] eggrobin edited pull request #2153: A better reference plane for the the ECI etc. frames. - https://git.io/fjnDE
<_whitenotifier-5dfc>
[Principia] eggrobin synchronize pull request #2153: A better reference plane for the the ECI etc. frames. - https://git.io/fjnDE
<egg|laptop|egg>
UmbralRaptop: the declination dial says Nice degrees
<SnoopJeDi>
!wpn -add:wpn hotfix
<galois>
Added wpn 'hotfix'
<egg|laptop|egg>
problem: I'm pointing to something which is 19 degrees in apparent declination
<SnoopJeDi>
I am so grumpy about every aspect of this bug >:(
<egg|laptop|egg>
UmbralRaptop: now there can be right angles from the dovetails etc., but how does Nice become equivalent to 19
<egg|laptop|egg>
UmbralRaptop: also the VS is in a comment, not an identifier
<egg|laptop|egg>
UmbralRaptop: how does M3 sound
<UmbralRaptop>
Seems reasonable
<UmbralRaptop>
uh, 19 degrees altitude?
* UmbralRaptop
only knows of declination on the celestial sphere
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<egg|laptop|egg>
UmbralRaptop: declination in the usual sense not altitude
<egg|laptop|egg>
iximeow: imaging m3 atm
<iximeow>
!
<egg|laptop|egg>
first 60 s eggsposure has everything double, not sure if vibrations of egg or atmosphere
<egg|laptop|egg>
2nd and 3rd eggsposures semidecent
<iximeow>
double is probably vibration
<egg|laptop|egg>
maybe the eggsposure is too long
<egg|laptop|egg>
hm yeah the stars trail a bit at times
<egg|laptop|egg>
!choose 10|30|keep going at 60
<galois>
egg|laptop|egg: Your options: 10, 30, keep going at 60. My choice: 10
<iximeow>
how long are eggsposures?
<egg|laptop|egg>
;choose 10|30|keep going at 60
<iximeow>
oh
<kmath>
egg|laptop|egg: 30
<egg|laptop|egg>
for maximum indecision iximeow should recommend 60
<egg|laptop|egg>
5th eggsposure is good
<egg|laptop|egg>
polar alignment is decent enough for this, trailing happens but is nondeterministic so probably atmosphere/vibrations fucking things up
<egg|laptop|egg>
(this time i bothered to take the scope outside and used the polar scope)
<iximeow>
it could be periodic error on the mount too
<iximeow>
that's what i'd suspect tbh
<iximeow>
(i have some images from last night with fun obvious periodic error effects :( )
<egg|laptop|egg>
ah yeah
<egg|laptop|egg>
I should read up about that PEC functionality someday
<egg|laptop|egg>
UmbralRaptop: iximeow: how good/tricky of a target is M51
<iximeow>
great target, farily bright
<iximeow>
highly recommend
<UmbralRaptop>
light pollution is the only real concern
<iximeow>
it's one of my 'do i have things set up right' tests this time of year
<UmbralRaptop>
(though less than for M101?)
<egg|laptop|egg>
UmbralRaptop: it's high so should be OK
<egg|laptop|egg>
only the horizons are fucked (until fog comes)
<iximeow>
(ixi secretly <3 m51 because it's the galaxy used in a lot of homeworld art)
* egg|laptop|egg
schedules 10 more 60 s eggsposures of M3
<egg|laptop|egg>
iximeow: should i go down to 30 s to limit losses or is that not useful
<iximeow>
losses?
<iximeow>
oh lost frames
<egg|laptop|egg>
yeah
<egg|laptop|egg>
then again i have a buch at 60 already so that would make calibration etc. a pain
<iximeow>
yeah
<egg|laptop|egg>
I already need to take new darks because mine are all at 10...
<egg|laptop|egg>
(they're old too, not sure how much that matters)
<iximeow>
a long series of shorter exposures works well at 12/14 bpp for me
<iximeow>
but at 8bpp it's no good
<egg|laptop|egg>
what's bbpppp
<iximeow>
(that's due to noise properties of my sensor mainly)
<iximeow>
bits per pixel
<egg|laptop|egg>
ah
<egg|laptop|egg>
I'm at maximum gain here (lowest read noise), multiple settings would mean MOAR DARKS which I'm not sure I want :-p
<egg|laptop|egg>
hey another double frame
<egg|laptop|egg>
and another one
<egg|laptop|egg>
hm, maybe it's the wind
<egg|laptop|egg>
very light breeze
<egg|laptop|egg>
doesn't seem to correlate with my movement or lack thereof all that much
<egg|laptop|egg>
even though this laptop is at the end of the USB cable that goes into the instrument
<egg|laptop|egg>
oh hey a good frame
<iximeow>
\o/
<egg|laptop|egg>
it does track nicely when I bother to do the polar alignment
<egg|laptop|egg>
these long eggsposures are much cleaner than short ones, hopefully the alignment algorithm actually has a chance of seeing stars this time
<egg|laptop|egg>
pointing th estars by hand is tedious
<iximeow>
what are you using for processing?
<egg|laptop|egg>
hey satellite naked eye visible at the zenith
<iximeow>
!
<iximeow>
sunrise soon
<egg|laptop|egg>
iximeow: what? it's midnight
<iximeow>
so it is
<egg|laptop|egg>
!choose more M 3 eggsposures | navigate to M 51
<galois>
egg|laptop|egg: Your options: more M 3 eggsposures , navigate to M 51. My choice: more M 3 eggsposures
* iximeow
time is very miscalibrated from having not really slept in ~32hr
<egg|laptop|egg>
;choose more M 3 eggsposures | navigate to M 51
<kmath>
egg|laptop|egg: more M 3 eggsposures
* egg|laptop|egg
10 more M 3 eggsposures
<egg|laptop|egg>
it's cold
<egg|laptop|egg>
maybe i should put on another pair of trousers
<egg|laptop|egg>
iximeow: okay it has drifted to the side quite a bit
<egg|laptop|egg>
the bulk of the cluster is still distinctly in frame though
<egg|laptop|egg>
okay i should probably adjust
<egg|laptop|egg>
UmbralRaptop: iximeow; i forget, do i need the instrument to be in the telescope for darks or is that just flats
<egg|laptop|egg>
(pretty sure i'll give up on flats&biases)
<UmbralRaptop>
Probably safer to do darks while still attached to the scope
<egg|laptop|egg>
blarg
<egg|laptop|egg>
uovo: can i do flats on horizon skyglow
<egg|laptop|egg>
UmbralRaptop not uovo
<egg|laptop|egg>
also if i do flats at the same duration as my eggsposures and darks can i get away without bias
<egg|laptop|egg>
(i.e. darks = bias)
<iximeow>
egg: imo darks can be done anywhere as long as you've got the sensor nice and dark
<iximeow>
also, yes, that's a fun trick
<egg|laptop|egg>
anyway enough M3
<egg|laptop|egg>
going to put on additional trousers and sglovse and then m51
<egg|laptop|egg>
coooooold
<UmbralRaptop>
They're the wrong trousers, Grommit! And they've gone wrong!
* UmbralRaptop
isn't sure how fast skyglow falls off
<UmbralRaptop>
!choose Nick Park | Nick Land
<galois>
UmbralRaptop: Your options: Nick Park , Nick Land. My choice: Nick Land
<UmbralRaptop>
(very cursed thought)
<egg|laptop|egg>
oh wow M51 is at 87 deg alt
<egg|laptop|egg>
this is going to be painful
<iximeow>
painful? 87 sounds nice
<egg|laptop|egg>
yes but finding it
<egg|laptop|egg>
there i anay to put a iagonral on the finder but it involes cha9cge itr tole iusal back not doing that in the dark wich all instruments set up