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
<egg|anbo|egg_>
iximeow: make that -10 according to the IR thermometer
<iximeow>
no thank you
<egg|anbo|egg_>
I think I am going to sleep upstairs and not in the bedroom whose door is currently open because the telescope cables come from it
<iximeow>
coldroom
<egg|anbo|egg_>
iximeow: also wow, 432mm is chonk
<egg|anbo|egg_>
raptop: does iximeow count as NAFO
* iximeow
meow
<egg|anbo|egg_>
meow
<raptop>
meow
<raptop>
ixi lives in north america and observes felines, so I'm gonig with yes
<egg|anbo|egg_>
raptop: so clearly we should do a joint ANBO-NAFO thing by stacking iximeow’s images and mine
<egg|anbo|egg>
iximeow: blarg I can’t get SIPS to stack the narrow and wide image, even if I hand-mark two stars on each it utterly fails at mapping one pair to another
<galois>
title: [2102.04511] Detection of a bolide in Jupiter's atmosphere with Juno UVS
* egg|anbo|egg
pets raptop with an asteroid
* raptop
floofs uneasily
<SnoopJ>
o.o
<egg|anbo|egg_>
!choose sleep|akkadian
<galois>
egg|anbo|egg_: Your options: sleep, akkadian. My choice: sleep
<egg|anbo|egg>
iximeow: I am not sure how to take advantage of the dynamic range of the FITS tbh, even the logginess at its highest setting I either saturate the bright part or lose the outer structure :-/
<iximeow>
egg: if you're using the camera at max gain, you only have ~100 counts per pixel to work with, so that sounds about right
<egg|anbo|egg>
iximeow: I am stacking 55 images
<iximeow>
lower gain gives you more range to work with but i think your best bet for a very dynamic target like M42 is some low gain images for the central regions, high gain images for outer regions, and artistically fixing up in tool of choice with both
<iximeow>
hrm
<iximeow>
what's the actual range of counts in your data?
<galois>
title: Rendering FITS is hard - Google Photos
<egg|anbo|egg>
but that I suck at image processing
<iximeow>
ooohh
<iximeow>
what are you using?
<egg|anbo|egg>
(yes, that FITS file is saturating on roughly the areas that are white on the RHS, but if I could make an image that is saturating there and still shows the outer structure I would be more than happy)
<egg|anbo|egg>
SIPS
* raptop
installs DS9 on egg|anbo|egg's laptop
<iximeow>
ahh
<iximeow>
i don't know SIPS but i don't think something specifically oriented for science work will give very pretty results
<egg|anbo|egg>
(no relation to the Spirou & Fantasio squirrel I think)
<egg|anbo|egg>
oh wait no that is spip anyway)
<iximeow>
f.ex i usually use DSS for this, it does a log curve and _then_ i fiddle with scaling on the logged data
<galois>
title: #kspacademia on 2017-08-15 — irc logs at whitequark.org
<egg|anbo|egg>
iximeow: I have never managed to get DSS to like my images, whereas I have managed to tame SIPS into stacking things
<egg|anbo|egg>
iximeow: yeah I guess I can postprocess the 8-bit image, lightening the shadows in google photos on the one that’s not saturated brings the outer structure back
* raptop
looks at the discussion and date
<iximeow>
8-bit? you mean 24bpp?
<raptop>
Oh, hey, that might have been from that week when I was technically homeless
<SnoopJ>
high latency conversation
<iximeow>
Technically Homeless, The Bes--
<egg|anbo|egg>
iximeow: yes, that is what SIPS calls 8 bit
<egg|anbo|egg>
as opposed to 16 or 32-bit images
<iximeow>
very scientific
* raptop
forgets if FITS supports 24bits per pixel
<iximeow>
(also: DSS often hates my images especially if there is any trailing at all. i've recently tried astap which seems to be more forgiving)
<egg|anbo|egg>
If you want to try SIPS I can tell you my star search settings
<egg|anbo|egg>
iximeow: advanced scientific image processing with, uh, the windows photos app