I do not think so. Filters, however, are essential for photometry but that is another story. For astrometry of current usually faint asteroids one needs all...
... Remember, filters only block certain wavelengths out, they don't add anything, so the quick answer is "no", as asteroids are basically broadband objects,...
John is right, the object is moving W->E and is most likely a geosynchronous satellite. The geosynchs are stationary relative to Earth, and your camera, which...
... You can't tell which way an object is moving from a single image (and why do so many people jump to conclusions and miss this obvious concept?), but it's...
Geostationaries are common indeed - say like 100%? What else could it be at declination minus 5 from mid-northern latitudes? There are no (zero) retrograde...
I agree it's almost certainly a geosat. I was just pointing out you can't determine direction completely from a single trailed image. There are always two...
A tutti voi, amici e collaboratori, trasmetto il mio nuovo e-mail address: dhomario@... Un caro saluto, mario [Non-text portions of this message have been...
Thank you all who took their time and responded to my email. Clear Skies. Yenal Öðmen Green Island Observatory Homepage www.geocities.com/yenalogmen ...
Yenal, Low earth orbit satellites pass very fast through the FOV. However, I have observed both geosynchronous (communication satellites) and GPS satellites....
Hi all, I am using DSI Pro II with BVRI filters. I wonder if the choice of filter is affecting the astrometric results or not. Last night I tried clear filter...
... That doesn't sound right. I imaged for years with no filter and never had problems with astrometry. Does the clear filter change your focal length? Jim...
Indeed, it should work, so best to check your settings. Perhaps stars that were previously unsaturated are now above your defined saturation limit. That...
Robert McNaught
rmn@...
Nov 13, 2007 9:55 pm
3563
I never tried doing astrometry with any filters except. for a short time, with a clear IR limiting filter. With dark skies one can get much deeper without any...
In broad terms, I would agree with the comment here (& from others) - filters don't make a significant difference in astrometry. However there can be small...
Yenal I have never used the DSI Pro but I routinely make astrometric measurements using BVRI and Clear filters....especially the V and Clear filters. I see no...
Hello everyone, How can I process images for MPC submission from more than one IAU code? I have a code for my home observatory, and am also observing from TIE...
John McCue
john.mccue@...
Nov 18, 2007 7:47 pm
3567
Hello John, you can save your settings with different names. Try....Save As... In the settings window. You can make settings for locations, CCDs, Catalogs. In...
Hello Juan, That's great, thanks, I'll do that. Much appreciated. Best wishes, John...
John McCue
john.mccue@...
Nov 18, 2007 8:36 pm
3569
Hi All: It's my first time to speak in this group! Thanks for your reading. Recently I begin to observe comets by the images from Xingming Observation(Mt.Nan...
My impression has been that Astrometrica’s photometry is not designed to report either m1 or m2 for comets. More knowledgeable people here probably know...
Hi, all. I recently installed Astrometrica on my laptop, but I'm unable to connect to Online Help. When I click on the Help tab and go to Help Contents, I get...
... I don't thnk this is the problem. This affects only "old" *.hlp- files, whereas Astrometrica has a html-Help file (compiled html, *.chm). Cheers, Herbert...
After Astrometrica has done a plate solution on the stars in the field of view, raise the aperature radius setting under the Program tab of Program Settings ...
Hello, I'm new to this mailing-list: my name is Giovanni Sostero; together with some other friends, I operate the Remanzacco Observatory (MPC code 473). I'm a...
... Ah - ok, didn't remember that correctly! Was just a guess... ;) *.chm normally shouldn't have any problem. Two more guesses: a) There are problems with a...
Thank you, Matthias (and Herbert). Below is the path that I get when I right-click on the pane in the Help menu where I get the message "The address is not...
