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Messages 3832 - 3861 of 4441   Oldest  |  < Older  |  Newer >  |  Newest
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3832
... Herbert, I've hit the divide by zero problem lots, lots more with the new version (only occasionally with previous versions) and have actually dropped back...
Peter Birtwhistle
pbirtwhistle
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Aug 9, 2008
12:14 pm
3833
I haven't noticed any increase in frequency with the new version. What I can advise: 1. I usually stack several images 2. The problem, most frequently arises...
Dave Herald
dave_herald
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Aug 9, 2008
2:05 pm
3834
Peter, I found the root of the problem and I am currently working on solution. The problem apparently arises when you measure a very faint object, while, at...
Herbert Raab
herbraab
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Aug 9, 2008
6:25 pm
3835
I found that when I click on a known object in an image and get Speed and Position Angle information, it is slightly different than if I use the Object look up...
michael.kran
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Aug 9, 2008
7:46 pm
3836
... In a single image, speed and PA are calculated for the center time of the one image. For stacking, the parameters are calculated for the canter time of all...
Herbert Raab
herbraab
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Aug 9, 2008
8:12 pm
3837
Thank you, Herbert. Michael _____ From: Astrometrica@yahoogroups.com [mailto:Astrometrica@yahoogroups.com] On Behalf Of Herbert Raab Sent: Saturday, August 09,...
Michael Kran
michael.kran
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Aug 9, 2008
8:15 pm
3838
Hi Peter and all, the same is for me, and it's good to know that Herbert found the problem... And I've also noticed that faint or very faint sources are much...
Luca Buzzi
buzzi_luca
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Aug 9, 2008
9:26 pm
3839
Dear Herbert, I use also to stack images. The error of float.... is now very frequent with last astrometrica revision. I can confirm that it appears almost...
ftozzi@...
fabrolone
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Aug 9, 2008
9:27 pm
3840
Since yesterday (08 Aug 2008 UT), I've been having trouble accessing the MPC Vizier server (CfA, Harvard, USA). Other Vizier servers seem to work okay. Has...
Gerald McKeegan
geraldspace
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Aug 9, 2008
11:16 pm
3841
... The Server in Harvard seems to be down. If you try to access the URL http://vizier.cfa.harvard.edu/vizier/ you will not get any response. Cheers, Herbert...
Herbert Raab
herbraab
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Aug 9, 2008
11:44 pm
3842
... I have often had a problem with earlier versions (not tried the new one) in crowded fields of not being able to centroid on a very clear but faint image....
Robert McNaught
rmn@...
Send Email
Aug 10, 2008
1:18 am
3843
Herbert - I'm not sure that the problem you have identified is the cause of what I (& I suspect others) are seeing. I get the divide-by-zero error immediately...
Dave Herald
dave_herald
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Aug 10, 2008
2:59 am
3844
It would seem to me that Astrometrica would need to know which filter was used to make an image to perform the photometry. And I see that the cfg file has a...
michael.kran
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Aug 10, 2008
5:39 am
3845
... No. The software still need to know if it should take the B, V or R magnitudes from the star catalogue for comparison with your un- filtered images. So if...
Herbert Raab
herbraab
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Aug 10, 2008
7:30 am
3846
... This seems to be another problem. However, this was not reported by any other user, nor did I ever get that error. So it's a bit hard for me to fix that....
Herbert Raab
herbraab
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Aug 10, 2008
7:30 am
3847
... I already started to work on that. There will be a option to manually position a small window to get a centroid, quite silimar to what was done in the DOS...
Herbert Raab
herbraab
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Aug 10, 2008
7:30 am
3848
Thank you, Herbert. _____ From: Astrometrica@yahoogroups.com [mailto:Astrometrica@yahoogroups.com] On Behalf Of Herbert Raab Sent: Sunday, August 10, 2008...
Michael Kran
michael.kran
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Aug 10, 2008
3:00 pm
3849
When I re-load previously solved images the RA and Dec show up as I move the cursor around, yet "Object Verification" won't work until I plate solve again. Is...
michael.kran
Offline Send Email
Aug 11, 2008
6:43 am
3850
... the MPC ... work okay. I don't know where the Vizier servers are located physically here, but I will remark that the power was shut down at one of August 9...
grunwalder2002
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Aug 11, 2008
7:16 pm
3851
... When you load a image that has WCS information, Astrometrica will calculate approximat epositions when you move the corsor over the image. This can be...
Herbert Raab
herbraab
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Aug 11, 2008
8:19 pm
3852
... Two lines got omitted here: the buildings at an off-site location in Cambridge (so I guess the servers are located there...) on ... Gareth...
grunwalder2002
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Aug 13, 2008
3:56 am
3853
I could be losing my mind, but... I generated a MPC report with version 4.5.0.372, and the report contained these three lines: K08J35T C2008 08 11.22254722 40...
michael.kran
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Aug 14, 2008
4:46 am
3854
Check the time precision setting on the CCD tab of your settings. ... From: Astrometrica@yahoogroups.com [mailto:Astrometrica@yahoogroups.com]On Behalf Of...
Gerald McKeegan
geraldspace
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Aug 14, 2008
5:40 am
3855
Thank you, Gerald. The precision setting on the CCD tab is: 0.10 Seconds. Michael _____ From: Astrometrica@yahoogroups.com...
Michael Kran
michael.kran
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Aug 14, 2008
5:45 am
3856
Unless you have an ironclad method of timing your images that precisely, you should use 1.00 sec. See "DATE OF OBSERVATIONS" on the MPC Guide at ...
Gerald McKeegan
geraldspace
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Aug 14, 2008
5:57 am
3857
Thanks, Gerald. Since I am just a "measurer" I will check with the observatory. Michael _____ From: Astrometrica@yahoogroups.com...
Michael Kran
michael.kran
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Aug 14, 2008
6:01 am
3858
It seems clear to me from the information on the URL that you have sent me, Gerald, that the current output format is completely correct the way it is. And...
Michael Kran
michael.kran
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Aug 14, 2008
6:33 am
3859
... But note the "Where such precision is justified" condition for using the extra decimal point. This phrase is in italics on the MPC's site, so evidently...
John Mahony
jmmahony
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Aug 14, 2008
8:09 am
3860
Thanks, John. Since my role is measurer, not observer, I have a word in to find out the accuracy that can be justified. Nothing has been submitted to MPC yet,...
Michael Kran
michael.kran
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Aug 14, 2008
3:58 pm
3861
I thought I would share some info & leaning obtained over the last couple of days concerning these two catalogues. I suspect the issues with Hipparcos will not...
Dave Herald
dave_herald
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Aug 15, 2008
6:14 am
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