Current Server Time: 00:07 (Central Europe)

#apertus IRC Channel Logs

2024/04/24

Timezone: UTC


01:04
BogdanXOR
joined the channel
01:09
BogdanXOR
left the channel
01:22
illwieckz
left the channel
01:22
illwieckz
joined the channel
01:53
BogdanXOR
joined the channel
01:57
BogdanXOR
left the channel
02:49
BogdanXOR
joined the channel
02:54
BogdanXOR
left the channel
03:13
fredy
left the channel
03:14
fredy
joined the channel
03:49
BogdanXOR
joined the channel
03:53
BogdanXOR
left the channel
04:49
BogdanXOR
joined the channel
04:54
BogdanXOR
left the channel
05:44
BogdanXOR
joined the channel
05:49
BogdanXOR
left the channel
06:43
BogdanXOR
joined the channel
14:15
vup
btw, does anybody have experience using electroluminescent panels for flatfielding?
14:15
vup
I found out astro people seem to use them, and if actually homogeneous that might be a pretty cheap way to do flatfielding
14:16
se6astian
interesting, how can we verify if a panel is actually homogeneous?
14:19
Bertl
simplest way should be to move the panel or camera in a grid style and take captures (out of focus) then compare the overall results
14:21
se6astian
sounds simple enough, great
14:21
vup
yeah not really sure :P
14:21
vup
I guess in a astro context you could compare a skylight flatfield with the flatfield produced by a el panel to get a rough idea.
14:21
vup
Also, how well are other cameras flat field calibrated? It might be enough to just image the el panel using a commercial camera. (with some difficulties around vignetting due to the lens)
14:22
vup
ah also Bertl, is it currently possible to add custom data to the raw hdmi stream?
14:22
vup
It would be nice to track the sensor registers, especially the temperature.
14:23
Bertl
there are currently as many data islands as vertical sync lines
14:23
Bertl
(so typically 5) at least one of them is used for the AVI info frame
14:24
Bertl
so 3 or 4 could be used to transmit arbitrary sideband data to the HDMI image
14:25
vup
ah I wasnt really thinking about the data island, but more adding a fake image row.
14:25
vup
Can get the contents of the data island from the magewell usb capture card?
14:25
Bertl
ah, yeah, well, you can always add overlay data to the output
14:25
Bertl
and yes, the magewell devices can retrieve the data islands
14:26
vup
only overlay, but also additional rows or columns?
14:27
Bertl
you can, for example, look at them at the config tool for the USB capture
14:27
Bertl
rows/columns only if you change the HDMI mode
14:27
vup
right, that would be fine I guess
14:28
vup
you havent by any chance already reverse engineered the usb requests for the data island? :P
14:28
Bertl
nope, but the API has functions for that IIRC
14:29
vup
ah I completely forgot about the magewell sdk
14:29
vup
will check
15:00
BogdanXOR
left the channel
16:04
BogdanXOR
joined the channel
16:09
BogdanXOR
left the channel
16:53
BogdanXOR
joined the channel
17:01
BogdanXOR
left the channel
19:00
BogdanXOR
joined the channel
19:04
BogdanXOR
left the channel
19:05
intrac
left the channel
19:12
intrac
joined the channel
19:49
BogdanXOR
joined the channel
19:54
BogdanXOR
left the channel
20:08
BogdanXOR
joined the channel
21:35
BogdanXOR
left the channel
21:46
BogdanXOR
joined the channel
23:06
BogdanXOR
left the channel
23:51
BogdanXOR
joined the channel
23:56
BogdanXOR
left the channel
00:49
BogdanXOR
joined the channel
00:53
BogdanXOR
left the channel
00:55
Spirit532
left the channel
00:55
Spirit532
joined the channel