26Left Posted September 3, 2011 Share Posted September 3, 2011 This is my attempt at Comet Gerradd as it approaches Brocchi's Cluster. Difficult shot, because the thing just won't stand still . I took it through a 300mm Nikor lens. 35 second exposures - in the end, I could only stack ten before the movement of the comet caused bluring.I was surprised to see the green tail. Link to comment Share on other sites More sharing options...
Doug Posted September 3, 2011 Share Posted September 3, 2011 HiWhen you was taking the image I was looking at this from East Sussex, Herstmonceux mist rolled in and put a stop to that so I headed for home but Ton bridge was clear dam, I understand what you mean about it moving it moves around so quick so this is a really good catch, well doneDougEssex Link to comment Share on other sites More sharing options...
Dave Smith Posted September 3, 2011 Share Posted September 3, 2011 Very nice.Dave Link to comment Share on other sites More sharing options...
JCJC Posted September 3, 2011 Share Posted September 3, 2011 Super image! In DeepSkyStacker there is a comet stack mode. Select each individual image and click on the comet tab, locate the nucleus and do the same for each image. When you go to stack there should be a comet option. Also search in the help, it guides you through very nicely.Jordan. Link to comment Share on other sites More sharing options...
26Left Posted September 3, 2011 Author Share Posted September 3, 2011 Thanks all. I think it was about 11pm last night from Crawley.I saw your image as well Dave, which was very sharp and well focussed. I take plenty of long expusure pics through my refractor, but this was my first attempt at a widefield using a camera lens (Nikkor 70-300) and I found it really difficult to focus.JCJC - yes, I thought of the comet alignment on DSS. I might try that. But, I guess that would cause trails on the stars. I wanted to get a good pic of the Coathanger, because it's something me and my kids come back to often with binoculars.Cheers,Tom. Link to comment Share on other sites More sharing options...
JCJC Posted September 3, 2011 Share Posted September 3, 2011 Hi Tom,You can choose to have trailed stars or it can stack the comet and the background stars then overlay the comet on the non-trailed stars, so you get best of both kind of thing.Thanks,Jordan Link to comment Share on other sites More sharing options...
fwm891 Posted September 4, 2011 Share Posted September 4, 2011 26Left - great image, the wide camera lens fov really improves things. My 800mm ota made things a little too tight with framing - well doneFrancis Link to comment Share on other sites More sharing options...
26Left Posted September 4, 2011 Author Share Posted September 4, 2011 Thanks Francis. I'd like to try some widefield shots with this lens over the winter. Perhaps some pictures of Orion. This is my first attempt, and it's not as easy as I thought it would be. Piggybacking the DSLR on my scope was not easy. And there was no filter. I normally use a Hutech IDAS filter, but the version that screws onto camera lenses is really expensive! Link to comment Share on other sites More sharing options...
philhas Posted September 4, 2011 Share Posted September 4, 2011 I really like that image, you have really captured the colour of the tail nicely and the coat hanger makes a great backdrop. Link to comment Share on other sites More sharing options...
26Left Posted September 4, 2011 Author Share Posted September 4, 2011 Super image! In DeepSkyStacker there is a comet stack mode. Select each individual image and click on the comet tab, locate the nucleus and do the same for each image. When you go to stack there should be a comet option. Also search in the help, it guides you through very nicely.Jordan. I'd forgotten about the comet stacking in DSS. I gave it a try and it worked. But, as usual with DSS, it seemed to remove all the colours and burn out the image.But, that inspired me to try two different alignments and stacks with Nebulosity - one on the stars and one on the comet. I then merged the two stacks in Photoshop.The result is 45 minutes of data. The extra data has brought out some more detail in the stars. Especially with NGC 6802 to the left of the Coathanger.Cheers,Tom. Link to comment Share on other sites More sharing options...
fwm891 Posted September 4, 2011 Share Posted September 4, 2011 Wow Tom, - that's a lot better, very colourful Link to comment Share on other sites More sharing options...
yeti monster Posted September 4, 2011 Share Posted September 4, 2011 Excellent capture. I'm still waiting for a gap in the clouds.... Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.