arp
Full Member
Posts: 96
|
Post by arp on Oct 26, 2014 9:55:26 GMT
Hi all, Anyone else capture a bright meteor at 20141025_205640 (UTC)? This object was recorded by my Leeds_SE camera (6mm f/0.75 lens). A provisional single-station result from UFO_A logs it as a Iw_DCY (delta Cygnid), although multi-station analysis might classify it as a sporadic. The magnitude estimate of -2.4 seems a bit on the low side. It looks brighter to me. Poor skies last night; I was fortunate to nab this one. I hope it was captured by another station. Clear skies, Alex.
|
|
|
Post by stewartw on Oct 26, 2014 10:08:49 GMT
Hi Alex, Yes, detected in Ravensmoor too. Analysis to follow. Best regards William
|
|
|
Post by BillW on Oct 26, 2014 16:41:13 GMT
Looks a touch brighter than that!
|
|
|
Post by stewartw on Oct 26, 2014 21:27:39 GMT
Yes, it certainly does look brighter ... however the video hints at a degree of fragmentation with the seperate trails merging into what appears to one one large bright meteor. Combining the data from Leeds and Ravensmor yields an amag of -2.6 sporadic.
|
|
arp
Full Member
Posts: 96
|
Post by arp on Oct 27, 2014 11:09:29 GMT
Hi, I've attached the light-curve from UFO_A Mask Editor 'mg' option and from the same data written to the Analyzelog txt file. They suggest variations during its peak brightness which are evident when the video is reviewed a frame/field at a time. Clear skies, Alex.
|
|
|
Post by BillW on Oct 27, 2014 12:24:23 GMT
Alex, It looks like the meteoroid may be tumbling or breaking up as William suggested. I see that the pros at Calar Alto are now jumping on the bandwagon... www.caha.es/new-fireball-detection-station-and-related-web-page.htmlIt is a lovely place to observe from. I saw the brightest Zodiacal Light I've ever seen from there during a Leonid observing trip in 2006. (I'm sure there's a Youtube video of that somewhere....) cheers, Bill
|
|
|
Post by stewartw on Oct 27, 2014 21:35:21 GMT
Hi Bill, I'm reasonably sure that this object did fragment ... between frames 40 and 55 there is a suggestion of a "Figure 8" shape forming as per the below. Individual frames can be misleading but the 15 or so frame sequence does consistently show an increasing seperation after which the object becomes very bright and the shapes merge to a bright mass. Best regards William
|
|
arp
Full Member
Posts: 96
|
Post by arp on Oct 28, 2014 14:02:06 GMT
Hi William,
To eliminate the chance that your 'split meteor' is caused by a lens artefact, have you compared it with any previous recordings of bright meteors crossing the same part of your FoV?
Cheers,
Alex.
|
|
|
Post by stewartw on Oct 28, 2014 14:27:04 GMT
Hi Alex, Over the years I've had a reasonable number of bright meteors cross the FOV at a number of angles / positions ... and this is the only one as far as I can recall that exhibited this "figure 8" behaviour. So while I can say that it was an unusual observation (for me) I cannot (without clear independant evidence) definitely state that the unusual shape was due to fragmentation ... it's just a proposal that seems to fit the observation but which cannot be definitely proven Will just have to wait for the next one and hope the pieces seperate further! Best regards William
|
|