(meteorobs) obs. period 2006.10.27-29

Thu Nov 2 07:05:32 EST 2006

I don't have much to add to this answer. Really, population index r
for sporadics is quite high, so for lm I had this is a normal number
of sporadic meteor. Also, the local time of my observation was about
midnight and this time numbers of sporadics are not the best, they
reach their maximum rates close to the morning twilight.

Best regards, Mikhail

men> Not really. +5.8 Mag skies are about my best.

men> Remember, the "r" of sporadics is approx 3 or 2.5 or 3.5

men> That means as the sky gets worse than LM +6.5, the sporadics disappear the
men> most. My average SPO mag is quite bright, since I don't see 4th and 5th
men> mag SPO's unless they are the center of my FOV.

men> My observed SPO rates for the ORI peak were between 3 and 5 per hour
men> during each night. LM was good for here, +5.6.

men> Also, see he was counting EGEs, and TAUs, so what might wind up in the SPO
men> pile for casual observers instead went to that source. I counted
men> EGE,STA,NTA as well as ORI's, and also counted LMIs during the peak
men> weekend and my plotting night beforehand.

men> What is your average LM?  Mine is about +5.5, since I know better than to
men> go out of my way to observe if the LM is worse than +5.
men> That doesn't mean I don't watch, only that I don't record the data other
men> than as an earth anecdote.
men> Believe me, only a small difference in LM really impacts sporadic rates.

>>
>>
>>
>>>From: Mikhail Maslov <ast3 at ngs.ru>
>>>Reply-To: Global Meteor Observing Forum <meteorobs at meteorobs.org>
>>>To: rarlt at aip.de, sc_meteors at hotmail.com, meteorobs at meteorobs.org
>>>Subject: (meteorobs) obs. period 2006.10.27-29
>>>Date: Tue, 31 Oct 2006 19:16:11 +0600
>>>
>>>Hello,
>>>
>>>An observation on 28 October. The sky was quite good, with lm=5.8 mag.
>>>During Teff=1.41 h I saw 7 meteors,
>>>3 Orionids among them. The most spectacular was the first meteor - a
>>>-1 mag Orionid with 3 sec. train.
>>>
>>>Visual Observing Form - Summary Report
>>>Day:27 Month:10 Year:2006; Begin: 17h 00m; End: 18h 28m
>>>Location: long. 82°57'E; latit. 54°57'N; IMO code:99999
>>>Site: NOVOSIBIRSK; Country:RUSSIA
>>>Observer: MASLOV MIKHAIL; IMO code:MASMI
>>>
>>>--------------------------------------------
>>>|. Period, UT |... Moon ...|Radiants altitude
>>>|.............|-----|------|----------------
>>>|.............|phase|height|NTA|STA|ORI|EGE|
>>>|-------------|------------|---|---|---|---|
>>>| 17:00-18:00 | --- |. bh .| 49| 43| 21| 23|
>>>|-------------|------------|---|---|---|---|
>>>| 18:00-18:28 | --- |. bh .| 52| 46| 27| 29|
>>>--------------------------------------------
>>>Air temperature: begin +5°C, end +5°C
>>>
>>>Meteor data:
>>>---------------------------------------------------------------------
>>>|time, UT .|...apparent path...|color|mag. |ang.|Show.|Remarks......|
>>>|(duration,|---------|---------|.....|.....|vel,|.....|.............|
>>>|sec)......|..begin..|...end...|.....|.....|deg/|.....|.............|
>>>|..........|.RA..|dec|.RA..|dec|.....|.....|sec |.....|.............|
>>>|----------|-----|---|-----|---|-----|-----|----|-----|-------------|
>>>|17:07(2.0)|03:00|+29|01:40|+28|white|-1.0 | 25 | ORI |train 3 sec..|
>>>|----------|-----|---|-----|---|-----|-----|----|-----|-------------|
>>>|17:09(0.7)|07:19|+84|04:37|+81|white| 3.0 | 04 | SPO |.............|
>>>|----------|-----|---|-----|---|-----|-----|----|-----|-------------|
>>>|17:14(1.0)|02:57|+24|02:00|+20|white| 1.0 | 23 | ORI |train 1 sec..|
>>>|----------|-----|---|-----|---|-----|-----|----|-----|-------------|
>>>|17:14(1.0)|02:54|+46|03:56|+40|white| 2.0 | 09 | SPO |.............|
>>>|----------|-----|---|-----|---|-----|-----|----|-----|-------------|
>>>|17:27(1.0)|02:51|+38|03:36|+31|white| 4.5 | 08 | SPO |.............|
>>>|----------|-----|---|-----|---|-----|-----|----|-----|-------------|
>>>|17:56(1.0)|04:31|+37|04:29|+43|white| 5.0 | 06 | SPO |.............|
>>>|----------|-----|---|-----|---|-----|-----|----|-----|-------------|
>>>|18:10(0.5)|01:52|+32|01:52|+39|white|-2.0 | 07 | SPO |.............|
>>>---------------------------------------------------------------------
>>>
>>>----------------------------------------------------------------
>>>| Period......|..Field..|Teff| F | lm |NTA |STA |ORI |EGE |SPO |
>>>|..(UT).......| RA..|Dec|..h |...|mag.|M| N|M| N|M| N|M| N|M| N|
>>>|-------------|-----|---|----|---|----|-|--|-|--|-|--|-|--|-|--|
>>>| 17:00-18:00 |03:54|+49|0.95|1.0| 5.8|p| 0|p| 0|p| 2|p| 0|p| 4|
>>>|-------------|-----|---|----|---|----|-|--|-|--|-|--|-|--|-|--|
>>>| 18:00-18:28 |03:54|+49|0.46|1.0| 5.8|p| 0|p| 0|p| 0|p| 0|p| 1|
>>>|-------------|-----|---|----|---|----|-|--|-|--|-|--|-|--|-|--|
>>>| Total ..... |-----|---|1.41|1.0| 5.8|p| 0|p| 0|p| 2|p| 0|p| 5|
>>>----------------------------------------------------------------
>>>
>>>---------------------------------------------------------------
>>>|Shower| -5 | -4 | -3 | -2 | -1 |. 0 | +1 | +2 | +3 | +4 | +5 |
>>>|------|----|----|----|----|----|----|----|----|----|----|----|
>>>| NTA..|....|....|....|....|....|....|....|....|....|....|....|
>>>|------|----|----|----|----|----|----|----|----|----|----|----|
>>>| STA..|....|....|....|....|....|....|....|....|....|....|....|
>>>|------|----|----|----|----|----|----|----|----|----|----|----|
>>>| ORI..|....|....|....|....| 1.0|....| 1.0|....|....|....|....|
>>>|------|----|----|----|----|----|----|----|----|----|----|----|
>>>| EGE..|....|....|....|....|....|....|....|....|....|....|....|
>>>|------|----|----|----|----|----|----|----|----|----|----|----|
>>>| SPO..|....|....|....| 1.0|....|....|....| 1.0| 1.0| 0.5| 1.5|
>>>---------------------------------------------------------------
>>>--------------------------------------------------------------------------
>>>
>>
>> Isn't this a low rate od sporadics at this Lm?
>> Not sure, just asking.
>>
>> Izidor
>>
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