I need some help on magnitude for comets when I do a data reduction for my images in Astrometrica my magnitudes for the comets is way off. Can someone help me...
You must be aware that Astrometrica uses aperture photometry, which means that, for determing the brightness of some object, it counts only the light that...
Hello Ash, We have a group of comet observers doing cometary photometry whith very high consistency. Here you'll find a wealth of photometric data including...
I am sorry for the delay, but the "Image of the Month" for April 2005 is finally online atthe Astrometrica web site, <http://www.astrometrica.at>. Click on the...
To ALL. I just collected first series of some 150 images of (785) Zwetana. This asteroid has been measured in the past and fairly small variations of its ...
... May I make a plea for follow up of SW40LW? I discovered it Saturday morning, my first FMO. - Marco ... Dr Marco Langbroek Leiden, The Netherlands FMO...
I'm using scripts to image multiple fields with MaxIm CCD and am wondering what FITS keywords are necessary to add to the image headers to enable celestial...
... What's missing in that WCS header is the image scale, given in deg/pixel with the CDELTn keyword. However, if you just want to specify the coordnates of...
... Once your image has a full WCS, Astrometrica will take that as starting coordinates for solving, and ignore OBJCTRA and OBJCTDEC. But the WCS needs to be ...
Reiner, The coordinates (RA, Dec) can be specified in a FITS header either by the syntax below (with the correction posted here by Herbert) or, more simply, ...
Hello ladies and gentlemen from the groupe, I am new with all this Headers of fits. Now I have this header: RAEOD: .......... Nominal Center apparent DEDEOD:...
JsfKoeb@...
Apr 24, 2005 5:32 pm
2610
... The difference between the first and the other two is apparently that the fisrt set of coordinates referst to the aequinox of the date of the observation...
Herbert, I think you mean the WCS keywords used in Astrometrica and Winscan (by Flohr). As far as I can tell, the standard does not contain ANYTHING about the...
... As you know, FITS stands for "Flexible Image Transport Standard" , and flexibe, in that case, means that anyone is free to add his or her own keywords and...
If only the spellings were agreed upon. Making progress reading a fits file (you have done it some 10+ years ago?). LN ... From: Astrometrica@yahoogroups.com...
Hi all : I have one problem , my soft indicate : " Of 100 stars detected only 3 have been identified with reference stars " why ? , never passes of 10 stars...
... Probably the software parameters are not set correctly. Makse sure that the CCD pixel size specified in the program settings is set correctly, and that the...
Thanks guys. OBJCTRA and OBJCTDEC did the job nicely so I'll never again have the problem of keying in the wrong coordinates for survey images. When doing...
I concur with you on the request to have some kind of 'break' button when the processing of seemingly normal images takes too long (using the moving object...
The "Image of the Month" for May 2005 is now online at the Astrometrica web site, <http://www.astrometrica.at>. Click on the thumbnail image on the menu bar at...
... "...at the 0.6m reflector. The camera is operated at the prime focus of the f/2.4 telescope, but a focal reducer is used to bring the foal ratio to f/1.2."...
Hi there Just done some tests with mid time point in stacking, and come up with some interesting results. Suppose I have 6 consecutive images of 1 asteroid...
... You do not *need* to stack consecutive images, but I would certainly recommend it. Of course, you may reject some images in a sequence, fopr example, if...
... While I haven't checked the details, I've thought about this a few times and I believe the full story is that you need the "time centroid" of the...
... John, for "normal" image stacks, you are absolutely right. There is a little bit more calculation behind the scenes with the track and stack feature of...
The skies cleared here in South Florida and I had an enjoyable night with the asteroids and alligators. I managed to observe a bunch of asteroids but I had...
Ladislav, I use the Known Object Overlay for finding the object as you do, but since Astrometrica does not calculate perturbations, the position is sometimes...
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