... of C/2004 H6 in August Hello, at the time of the Visnjan School of Astronomy, thanks to Reiner, I made some photometry on C/2004 H6 (SWAN) out of the...
Dear colleagues, ... Akimasa Nakamura did photometry of C/2004 H6 on Aug. 16. The comet was still so bright as 13.4 mag with a large coma of 2.2 arcmin and...
... That's one of the fun things about comet observing--you can never be certain of what you will find from night to night. Hey, at least my comet magnitudes...
Hi Greg, Again, with all due respect and lots of intended humor, you would not be confused at all it you read the messages on this great list! Maik Meyer...
Hi Dennis, ... the difference may not be that much since the magnitude at this page is indicated with N which means that it refers to a so-called "nuclear"...
... Well, I guess you are kidding since it is in fact the messages here that are confusing me! Based on the most recent magnitude it appears this comet should...
Hi Maik, Thanks for the explanation. It is very useful and I hope the imagers on the Comets – Images group are taking notes. I do not understand the...
Hello all, Having got some more observation of comet Machholz now spanning an arc from Aug 27 - Sep 01 I first have to admit that my pessimistic suggestion of...
... I doubt that's the reason: even using standard magnitude parameters adjusted to fit the most recent observation you should get a reasonable magnitude for...
Hi Dennis ... Nuclear magnitude is brightness of so-called nucleus or central condesation. You should realise that outer coma also produce a light so summary...
Hi: I've been reading this post with great interest. Because I only started imaging comets recently this information has been very helpfull. But there is a...
Trying to give some additional information ... My reports were: C/2004 H6 (SWAN): 2004 Aug. 21.06 UT: m1=12.2, Dia.=2', DC=0, 20 cm SCT (77x) ( Alto del Castro...
Bingo Greg, you hit the nail right on the head. My images of this comet naturally bring out much more than my visual observations - until my last observation...
Hello, I think that there is an interesting issue that is blinking behind the scene in this discussion about C/2004 H6 (SWAN). For visual estimations, it's...
... Why bother with aperture photometry? Why not simply extract a brightness profile across the comet? Heck, even a simple measure of FWHM (full width at...
... Hello Greg, OK, this is the first (and most trivial) solution I listed. The problem with it arises when you try to measure a very diffuse and faint coma...
... I somehow missed that line. Sorry. Maybe it's time to go home now; it's been a long day. :-) ... It might, but I suspect you would run into the same...
Hi my friends, I am an amateur astronomer Portuguese. My name is Jorge Almeida. Paulo Guedes is a friend of mine that advice to me this great list. In next...
... And of course: http://www.skyhound.com/sh/comets.html -- where this information is gathered from a variety other sources and presented is a useful format ...
... count on ... that ... Is there any vetting of the observations posted there? If not, a vetted list from a reliable source, such as the sites posted by Maik...
Hi Gareth, ... It depends on what your interest is. There is a growing (hopefully) interest in the recreational visual observation of comets, sort of like ...
... If the aim is to make independent observations, then it is best to not check any website/yahoogroup at all which lists recent observations by others. For...
... Of course--and this is the reason that ICQ holds back some of its recent magnitudes--but I feel very strongly that this is something that any *good*...
