Thank you Len, this gives me lots to work with and will save me lots of wasted time experimenting. Rich Sent from my Rich's iPad ... [Non-text portions of this...
14832
Eelko Gielis
me_gielis
May 18, 2013 9:44 pm
Hi Russell (sign off your message please, I have to guess now ;)), I set up my gear the next few minutes for an imaging session, after that I have a look what...
14833
daveleenc
May 18, 2013 9:52 pm
Just getting going with AP. I have a BUNCH of Darks (and Bias) frames over the range of sensor temps (as recorded by my DSLR) that I expect to encounter in...
14834
Eelko Gielis
me_gielis
May 18, 2013 10:33 pm
Hi Dave, You are correct in the fundemantal way, but DSS needs at least one light frame to make a master bias frame and after that a master dark frame. This...
14835
daveleenc
May 18, 2013 10:42 pm
Eelko, thanks for the quick response. I assume that I can use just about any dark file and call it a 'light' and that will work. Is that correct? Since I am...
14836
Eelko Gielis
me_gielis
May 18, 2013 11:03 pm
Hi Dave, You could do that, yes. Still your bias frame is taken into the calculation for the darks: ...
14837
daveleenc
May 18, 2013 11:14 pm
Thanks again, Eelko. I do believe that what I was 'proposing' is the 'Bias free' example #3 in the referenced DSS webpage. Again, I appreciate the help. dave...
14838
russellhq
May 18, 2013 11:28 pm
Thanks Eelko. Yes, you guessed correctly! Clear skies, Russell...
14839
Eelko Gielis
me_gielis
May 18, 2013 11:53 pm
Hi Russell,
I had a go at your image, where the red band around your image iscoming from, I don't know. Amp glow from your sensor?
I came up with the...
14840
Jonathan Powles
jonpowles
May 19, 2013 12:16 am
Hello all, like others I'm delighted to have found this group. I've been imaging for about six months,and have used both DSS and MaximDL, but I much prefer...
14841
Eelko Gielis
me_gielis
May 19, 2013 12:24 am
Hi Jonathan, I don't have a clue what is going on, but for all the other that want to take a look: http://tech.groups.yahoo.com/group/DeepSkyStacker/files/ all...
14842
Mark Striebeck
mstriebeck1967
May 19, 2013 12:39 am
Actually, in dss the workflow is a little bit different. When you want to calibrate your first real image, you select the corresponding darks. And DSS will...
14843
Sander Pool
sander_pool
May 19, 2013 12:53 am
Hi, That seems to indicate the flats either don't match the lights (different angle or not uniformly illuminated) or the darks and flat darks don't match. Try...
14844
russellhq
May 19, 2013 12:57 am
Thanks Eelko, that looks really good. I don't know if it's amp glow, I thought the calibration frames would have taken care of that (darks, bias, flats, dark...
14845
Jonathan Powles
jonpowles
May 19, 2013 12:57 am
Ok, Sander, this may have cracked it. A couple of months ago I got a motorised focuser, which seems to have a bit of play when I attach it to the focal...
14846
Sander Pool
sander_pool
May 19, 2013 1:18 am
Hi Jonathan, well it's possible but I would not expect such a dramatic effect. Are your flats reasonably white? Because of the discoloration I'm thinking maybe...
14847
Len & Val Ward
m1ss1nglink
May 19, 2013 2:32 am
Hi Scott : Only thing I can think of is to make absolutely sure that all of your subs are raws direct from your camera. I guess that the DCRAW in DM might be...
14848
Scott Tallman
stallman_38
May 19, 2013 3:28 am
Hey Len-- My lights are .cr2 and my darks are .CR2 But since both are recognized, and the exif data is reported, it seems to me that the files are legit. ...
14849
Jonathan Powles
jonpowles
May 19, 2013 5:04 am
Hi Sander and others, In doing what Sander asked (getting the minimum files required to recreate the effect) I seemed to have found the problem by accident. I...
14850
pfile
May 19, 2013 5:30 am
interesting - the fits settings should have nothing to do with CR2 files. in point of fact the CR2 files are monochrome images. all CCD images are monochrome....
14851
Jonathan Powles
jonpowles
May 19, 2013 7:33 am
i< do wonder what's going on here, because the flag you toggled should not have any effect. Exactly why I never touched it before - except I'm suspecting this...
14852
Eelko Gielis
me_gielis
May 19, 2013 7:38 am
Hi Russell, I had a hard time with DBE to get most of the gradient out of the image, you could crop that part of the image to get a clean image but that's up...
14853
Simon Dent
sdentrem
May 19, 2013 12:59 pm
on this point, do flats need to be white? when flats are taken of blue sky, does DSS convert them to white, or is the blue subtracted from the image? thx ...
14854
Eelko Gielis
me_gielis
May 19, 2013 7:56 pm
Hi Simon, Flats need to be in the whitebalance of your lights, white or gray is good, as long as the illumination of the frames is uniform and the histogram...
14855
Eelko Gielis
me_gielis
May 19, 2013 10:09 pm
Hi all, My attempt from last night on this object, details in Dutch. ...
14856
Len & Val Ward
m1ss1nglink
May 19, 2013 10:42 pm
Hi Eelko: A suggestion to try to get rid of the star streaks. Split up the light sub frames into different group tabs but do it by every other sub or every...
14857
ronw72
May 20, 2013 1:01 pm
Anyone game to stack these jpeg images http://www.fototime.com/inv/A2FFB9370FCAD6E I was trying for a wide field but didn't have the camera set for as wide as...
14858
Eelko Gielis
me_gielis
May 20, 2013 3:54 pm
Hi Ron, That's a very wide wide field for that comet. What lens did you use? -Eelko. ________________________________ From: ronw72 <no_reply@yahoogroups.com> ...
14859
ronw72
May 20, 2013 4:05 pm
Eelko, I miss stated in my post. I wanted to shoot at 270mm or 300mm, but couldn't get a focus so I opted for the 70mm shot which was a way to wide. the lens...
14860
Jonathan Powles
jonpowles
May 21, 2013 5:01 am
OK, I spoke too soon. The strange coloured vignetting issue has returned. I'll post some sample files and maybe someone can have a look? Cheers Jonathan...
