Message boards :
Cafe SETI :
All Seasons in the Southern Hemisphere
Message board moderation
Previous · 1 . . . 30 · 31 · 32 · 33
Author | Message |
---|---|
Wiggo Send message Joined: 24 Jan 00 Posts: 36400 Credit: 261,360,520 RAC: 489 |
For the month of April our min. av. temp was 1.2C up at 9C while our av. max was up by 1.5C at 21.6C. Our rainfall was also up by 55.5mm at 97mm while our year to date is still 42.25mm above average at 353.75mm. Anyhow May is off to a damp start. Cheers. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13835 Credit: 208,696,464 RAC: 304 |
Here's something new- the BoM has issued a space weather warning. The Bureau of Meteorology's Australian Space Weather Forecasting Centre has forecast a geomagnetic storm event of level G4 (severe) on the global G-scale.G5 is the highest warning level. Grant Darwin NT |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13835 Credit: 208,696,464 RAC: 304 |
From last night's storm. More expected tonight. Grant Darwin NT |
ML1 Send message Joined: 25 Nov 01 Posts: 21019 Credit: 7,508,002 RAC: 20 |
Wow! See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Scrooge McDuck Send message Joined: 26 Nov 99 Posts: 1077 Credit: 1,674,173 RAC: 54 |
From last night's storm.I'm curious about the photographic data. What aperture ratio does the lens need (standard or expensive high-speed lenses) and the exposure time (seconds?). I suspect you can't see northern lights at all with the naked eye at low latitudes. Correct? |
Wiggo Send message Joined: 24 Jan 00 Posts: 36400 Credit: 261,360,520 RAC: 489 |
Yes you won't see the aurora borealis (northern lights) here down under, but you can see the aurora australis (southern lights).From last night's storm.I'm curious about the photographic data. What aperture ratio does the lens need (standard or expensive high-speed lenses) and the exposure time (seconds?). I suspect you can't see northern lights at all with the naked eye at low latitudes. Correct? Sadly I missed the spectacle due to the heavy cloud and rain occurring at the same time. Cheers. |
Scrooge McDuck Send message Joined: 26 Nov 99 Posts: 1077 Credit: 1,674,173 RAC: 54 |
Yes you won't see the aurora borealis (northern lights) here down under, but you can see the aurora australis (southern lights).D'oh! |
rob smith Send message Joined: 7 Mar 03 Posts: 22457 Credit: 416,307,556 RAC: 380 |
I've had luck with cheap camera (less than 10gbp) nd an expensive one (no change from 2000gbp). Small appature (large f-mumber), long exposure (several seconds) is said to be best, but the auraura is realy intense then even a point amd click camera or phone will get reasonable results. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13835 Credit: 208,696,464 RAC: 304 |
Well, Tassie is certainly getting the snot knocked out of it lately. Gale force (and stronger) winds over the last few days, and tonight and tomorrow even stronger winds are expected & this time with flooding to top it off. Power outages for some are likely to take up to a week to be resolved. Grant Darwin NT |
©2024 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.