Please 'admire' http://www.astro.uni-bonn.de/~dfischer/ison/ on which I spent the last few hours, in order to 'visualize' the viewing conditions for a certain...
21479
cnj999
May 21, 2013 7:04 pm
Hi Bob, The anomalous tail is comprised of dust that has been ejected generally in an anti-solar direction from the nucleus in past weeks and months, the ...
21478
Bob King
cometlynx
May 21, 2013 4:38 pm
Dear Jean, Of course - that makes perfect sense! Thank you. My problem was I wasn't thinking in 3 dimensions. So one last question. Is the long tail we ...
21477
Jean Meeus
jmeeus@...
May 21, 2013 4:25 pm
This is a reply to the question asked by Bob King. The Earth does not need to go through the plane of the solar system. The longitude of the ascending node of...
21476
Bob King
cometlynx
May 21, 2013 4:11 pm
Hi John and all, I checked the JPL Horizon orbital diagram for Comet C/2011 L4 and don't see how Earth is intersecting the comet's orbital plane later this...
21475
Bomber2 Panther
outbackmanyep
May 21, 2013 9:07 am
Nice image Lucian, looks like you'll definitely need that smaller image scale! Cheers, Chris W...
21474
skyweek
May 21, 2013 7:35 am
The authors of http://arxiv.org/abs/1305.2621 - promoted by http://www.abc.net.au/science/articles/2013/05/21/3761473.htm - think so, but hasn't Main Belt...
21473
Lucian Hudin
cj79mki
May 21, 2013 6:54 am
Hello, I took an hour of 2 min exposures of C/2011 L4 (PanSTARRS) near the 4.7 mag. star HIP 112519, last night (about 2013-05-20 0-1UT) with a 300mm f/5.6...
21472
Bomber2 Panther
outbackmanyep
May 21, 2013 12:20 am
Hi Rob, These two comets (L4 and F6) have been impressive, i hope they do require mosaics, so beautiful to look at! These guys have been able to work around...
21471
Rob
kaufman_rob
May 21, 2013 12:05 am
Very true Chris, there have been some magnificent shots. But the imaging scales may have to be widened as even now there is faint tail extending beyond the...
21470
Bomber2 Panther
outbackmanyep
May 20, 2013 10:37 pm
Hi John, No doubt there will be many people imaging it, Rolando Ligustri and Damian Peach have been taking some spectacular images recently.I'm sure it won't...
21469
cnj999
May 20, 2013 8:17 pm
Although I haven't read through all the posts included in the imaging section of the site to see if it has already been mention, for the benefit of all I...
21468
walcom77
May 20, 2013 7:48 pm
Hi All Our images of Comet C/2012 S1 (ISON) taken on May 2013 with the 2-meter Liverpool Telescope are being worked on as part of an ongoing collaboration by...
21467
Nick Evetts
bedfordshire...
May 20, 2013 9:08 am
a couple of my Panstarrs Images PANSTARRS (C/2012 K1) http://www.slooh.com/viewsnap_img.php?dl=0&img=3412546&s=4321&cid=54287&name=1&obs=1&date=1&taken=1 and...
21466
josephbrimacombe
josephbrimac...
May 20, 2013 12:58 am
Hi All Another widefield image: this time very close to Alrai LINK http://www.flickr.com/photos/43846774@N02/8756057412/ Clear still skies Joe Joseph...
21465
Bomber2 Panther
outbackmanyep
May 20, 2013 12:53 am
Hi Joe, Great image! Such a photogenic comet, such a nice long ion tail, keep em coming! Cheers, Chris W Walcha, NSW Australia...
21464
josephbrimacombe
josephbrimac...
May 20, 2013 12:22 am
Hi All Another widefield image of this magnifient comet. LINK http://www.flickr.com/photos/43846774@N02/8754829903/ Clear, still skies Joe Joseph Brimacombe ...
21463
terryjlovejoy
May 18, 2013 11:22 am
Oh my mistake I was looking at observations of C/2010 S1 not C/2012 S1...Doh! There are just too many comets.......
21462
cnj999
May 18, 2013 4:36 am
Terry - Where are you finding these bright obs? I cannot find any estimates that are anywhere near magnitude 13. Could you enlighten me? If true, this is a...
21461
terryjlovejoy
May 18, 2013 3:39 am
I've noticed some brighter visual estimates of this comet around mag 13, which suggests an intrinsic brightness somewhere around 5-6. I hope this holds as...
21460
Soulier Jean-FranĂ...
jeffcomete
May 17, 2013 10:22 pm
Good evening. Measurements taken with a red filter Johnson / Cousins​​, R.o : 8", ech. : 2"/pix. TEL 0.30-m f/3 Newtonian reflector Coma : +/- 1'.10 x55" ...
21459
Bomber2 Panther
outbackmanyep
May 17, 2013 3:30 pm
Hi Artyom, I can confirm that. Difficult in moonlight,i made it out at m1= 12.6; Dia= 1.7' under moonlight at x83 using 10" dob. Transparency was average and...
21458
terryjlovejoy
May 17, 2013 10:33 am
Lets hope for a speedy recovery for Doc Clay!...
21457
Artyom Novichonok
artnovich
May 17, 2013 7:20 am
Yes, outburst. I imaged the comet near the Moon today. 2013 05 17.21 UT m1=12.1:C Dia.=&2.5' Compact center (40'' wide), Af(Rho) = 320 instead of past ~70 (10...
21456
lone_scope2000
May 16, 2013 4:49 pm
Got a brief text from Doc's wife to let me know the surgery went well but he is in quite a bit of pain which made for a rough night. Dave Birmingham...
21455
ejehin
May 16, 2013 4:48 pm
Hello, During our survey of faint comets with belgian robotic telescope TRAPPIST installed at ESO la Silla ...
21454
lone_scope2000
May 16, 2013 4:48 pm
Got a brief text from Doc's wife to let me know the surgery went well but he is in quite a bit of pain which made for a rough night. Dave Birmingham...
21453
swargam0
May 15, 2013 7:17 am
I would like to bring to the attention of the members of this group the existence of a Facebook group page that focusses on the pro-am collaborations and...
