Here is the July meteor data based upon radar backscatter from Graves. As commented by http://meteorshowersonline.com/july_radiants.html
“Although the July radiants do not individually produce strong rates, activity from the Aquarius and Capricornus regions in July and early August, as well as minor activity from other radiants, cause hourly rates to basically rise between the middle and end of July for observers in both the Northern and Southern Hemispheres. Therefore, clear, moonless nights can be quite enjoyable for anyone observing during late July. “
there is a definite increase in activity towards end of month, where we are also entering the Perseid stream ( July 23 – Aug 22nd) and there has been a noticeable increase in fireballs picked up by NASA all sky monitors ( see Spaceweather.com)
I have also combined last years daily counts with this years for comparison:
although the count rates vary, there is some mirroring of variation early in the month, but there appears to be an increase rather than decrease in activity during the latter stages of the month. Notice also the diurnal nature of activity, particularly during the second half of the month, where activity is very high during the early hours of the day ( see Hourly meteor rate) .This is a good pointer to observing the Perseids later this month, with peak activity from midnight , through the early hours of the 12-13 Aug, a waning Gibbous moon will be rising around midnight which might interfere with viewing, but it stays relatively low in the sky as the Perseid radiant climbs higher. The shower is active from July 23 till Aug 22nd with best views during the nights of the 11, 12 and 13 Aug. Definitely worth getting those all sky cameras we have made up and running to record shower activity.
These cameras can be mounted using the plates Ed provided – also Paul found this L-bracket from Focus – ideal for mounting on the side of your observatory.
Click on link below to download Ed’s powerpoint from today’s All Sky Camera Workshop (Powerpoint .pptx file)
All Sky Camera workshop v2
Success for A.S.B.O. !
Speeded up 4x
Captured on the MacBook Pro via a trial version of ‘SecuritySpy’ (set to record for 10 seconds pre-trigger and 20 seconds after).
Look out for:
1) Satellite trail (although I think I’ve got it set too sensitive at the mo as the software is triggering a capture and I can’t always see why!)
2) Some black ‘swarm’ thing which is slightly worrying… 😉
3) Lower right corner (towards the end) possibly a meteor or Iridium flare..?
Damian bought the All Sky Camera he made at Ed Mann’s workshop around to show me tonight – this is a great bit of kit. Thanks Ed for laying on such a great workshop!
He also bought around another bit of kit he bought – another camera……..I thought he said he wasn’t spending any more money?
Here is the Powerpoint presentation I used for the All Sky Camera workshop
All Sky Camera workshop