davenn's latest activity
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Today's quake from my seismo here in Sydney, Australia M 6.4 - Banda Sea 2025-10-28 14:40:18 (UTC) 6.694°S 130.031°E 142.0 km depth -
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Halloween:
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Light from stars is emitted as visible light and reaches us as visible light (ditto the other frequencies stars emit). No energy is lost...
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Hello, I attach my last atempts, this saturday was clear moonless so I get out telescope after long time. Images are made with...
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davenn reacted to collinsmark's post in the thread Our Beautiful Universe - Photos and Videos with
Love.
The Jellyfish Nebula (a.k.a. IC 443, Sh 2-248) scooped up from my back patio, Feb. - Mar. 2025. The nebula is a supernova remnant found... -
davenn reacted to collinsmark's post in the thread Our Beautiful Universe - Photos and Videos with
Like.
For me it's pretty invaluable. There's a lot of "bang for the buck," once the initial setup/workflow is debugged and figured out. Again... -
davenn reacted to collinsmark's post in the thread Our Beautiful Universe - Photos and Videos with Like.
Here's an image I captured last Tuesday night [Edit: actually, Monday night/Tuesday morning], a little less than a week before...
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davenn reacted to collinsmark's post in the thread Our Beautiful Universe - Photos and Videos with Like.
Have you tried flat frame calibration? I'm a stickler for flats. Every deep sky image I've ever posted here I've processed with flat...
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If you measure a linear ramp then the source impedance must be designed to be constant current. No problem but one can't draw...
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Agreed. You could design circuits with a superconducting component and a long time constant and you could design circuits with a...
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Why are you putting a resistor in series with a superconducting inductor? That kind of defeats the purpose, no?
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davenn reacted to Ibix's post in the thread B 'splain this hydrostatic paradox in tiny words with
Informative.
If you put the two clampstands on scales, the left one would show the "missing" weight. The walls of the vessels exert force on the... -
davenn replied to the thread Collection of Lame Jokes.
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