Ron, First, may I say to anyone reading this other than Ron, that I know others are obviously using Ron's Automapper II to great advantage. I'm once again a...
Hi all, I'm just calibrating some images from astrofest and have discovered that flat fielding my images leaves a dark spot where the hotspot was. Wondering if...
I'd be interested in this answer as I have ended up with a big black hole, where my hot spot was also! I don't seem to notice it too much unless I have to...
Eddie, Is this happening directly from the flat field correction, or after combining images? I get that when I combine using Sigma, but I have never seen that...
Hi Mark, It's visible in the sub-images directly after flat fielding. Regards, Eddie Trimarchi ~~~~~~~~~~~~~~~ www.astroshed.com www.fitsplug.com ... ...
Hi Eddie, Is it possible you oversaturated your flats? What's the adu reading near the hot spot on the flat? Just a thought, Randy ... after ... have never ...
Hi Randy, No I don't think so. I usually aim for an average pixel value of 15,000. In this case the median flat has 15,200 at it's centre. Regards, Eddie...
If the problem is worse in low S/N images, try combining images and then applying the flat. Ron Wodaski author of The New CCD Astronomy http://www.newastro.com...
Don, That's excellent detail in M27 but I wonder why all the yellow stars. Is this consistent with what is expected? None the less a great image. Steve ...
Hi, Steve, Thanks, but I think there are alot of reddish stars near M27. I've compared this one: http://www.astrodon.com/M27Narrow.html (C11 at f/10) to my...
Eddie I have a similar problem and think it is related the Optec 0.5 FR I am using. What FR did you use? Richard ... Richard Seavey [Non-text portions of this...
Hi Don, I like the effect of RGB stars with the narrow-band nebula image. I'm also glad that my method of extracting stars worked for you :) I think you're...
Paul, thanks for making your method available. My RGB Weight Calculator was used for the color weights. M27 was overhead, so atm. extinction was not a factor...
Frank, Thanks much for the proffered help! I nearly missed your advice, as I seldom look at messages where the subject just refers to Digest Number whatever. ...
I have just posted a current effort of M31. Taken 8/24/03 near Mt. Pinos, CA. Takahashi FSQ and ST10XME. LRGB = 125/20/20/40. I was suppose to shooting...
Just got the book. Only part way through it, but, learning a lot. Great stuff, Ron. Has anyone out there used the new Celestron CGE mount for imaging? Thoughts...
Jack, There is a very active CGE forum on Yahoo. The members there offer a lot of information. You might want to post this question there. ... Great ... game?...
Hello Don, My system reports 1.3|1.0|1.86 at 30 degrees. Steve ... From: Don Goldman [mailto:donclearview@...] Sent: Tuesday, September 02, 2003 1:06 AM ...
I know everyone has heard this one before...but I'm so close I hate to give up, looking for any ideas before I drop the $399 for maxim dl. I'm using a new...
Hi All! Anyone can explain me how to obtain neat planet photos? I'm tried filters, barlows lenses, different exposition times, hundred of photos added and...
Hi Dave: I'm not going to be any help. I could never get anything to work reliably with Pictor. When I switched to MaxIm, bam! everything worked! Plus the ...
The most important "trick" is good seeing conditions. For example, I was never able to get satisfactory planetary images from my back yard even with really...
Attached is an image of mars taken at 32 degrees by a rookie with a webcam. http://www.geocities.com/vmat9/Mars_8-27-03.html Vic ... From: Wodaski Yahoo...
We had taken images of M27 in May of this year and we took new images on September 1 of this year. One of us (Tim Blank) noticed that there is a fairly bright...
Right after I posted the first note I did a search and found that the variable is known as the Goldilocks Variable. Next time I'll do the search BEFORE I post...
Terry: Nevertheless, isn't it awesome when you confirm such a wonder of the universe? I still think it's neat that you captured the image, verified the...
Terry I just posted an M27 photo in the Photos section taken July of 2002, in which the variable is not only visible, but considerably brighter than in your...
Here is an image taken with the FRC-RD ( Taks FRC reducer ) on their FRC300 scope. Though my processing needs work here is the image, I had gotten a ton of...
