(meteorobs) OT -Gen. Info. Daylight Fireball mirror & a precursor "Blip"

[ycsentinel]

Hi ykchia,

Just for daylight use only. Camera is not sensitive enough for any
night work. Any camera can work for day as long as you can get a good
background in the picture for realistic imaging. Trigger sensitivity
can be set to closely match camera resolution by trial and error.

Good luck in the closet! Let us know how you do with fireball
captures. :-)

YCSentinel    


--- In meteorobs at yahoogroups.com, chiayk1 at ... wrote:
>
> 
> Hi :
> 
>  Very marvelous findings. Hm... i have mothballed a similar setup in
my closet. 
>  Given the ample ambient light - perhaps a day light fireball
monitor requirement of a low lux ccd is not even required. Are u using
the same ccd for both day and night or dedicated this one for the day
only fireball.
> 
>  Thanks
> rgds
> ykchia
> www.nightevents.blogspot.com
> 
> 
> --- stange34 at ... wrote:
> 
> > A common camera(non-low light) and a hemispherical mirror appears to
> > be well 
> > suited for daylight fireballs for a number of reasons.
> > 
> > a) Far less reflection artifacts than a all-sky lens camera.
> > b) Better definition & contrast of Sun against the sky.
> > c) Minimal field light saturation even with fixed focus & iris
> > lens.
> > c) Reasonable sensitivity to minor light events.
> > 
> > This photo is with the mirror not yet fully aligned and height not
> > adjusted 
> > for maximum field. Still being worked on at this time with heating
> > still to 
> > do.
> > 
> > Red indicators are the few artifacts under strong morning sunlight.
> > 
> > BLUE circle is around a momentary sky ("Blip") event which is NOT
> > ASSOCIATED 
> > with the nearby sunlight spike in photograph. This was confirmed by
> > an image 
> > before & after the time of that event. I cannot estimate the
> > magnitude with 
> > my limited skills of observation.
> > 
> > http://www.geocities.com/stange34@.../Blip
> > 
> > Looks like basic setup will work for Daylight Fireballs without sun
> > 
> > shielding!
> > 
> > YCSentinel 
> > 
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