... snip ... In other words one wants an image about 100 or 200 pixels diameter, right? I am working with a monochrome astro camera (ST2000) not a web cam. Is ...
IIRC, the original Roddier test required at least a 16-bit camera. Averaging was done by a 30sec exposure. The details are in the Roddier paper in the files...
Group - the title line for message #595 is erroneous and misleading. The tests discussed in #595 were not done using simulated images but were on images of...
... Yes, thats about right. I usually aim for 80 to 160 pixels diameter. I've gone as low as 40 pixels with reasonable results. There is some trade-off...
Mick, I think you have good results with the C6R - you know you need that mask and you end up with a really fine 5.5" instrument! I'm interested in your 10"...
... Mr. Jolly - thanks for the interest and advice that the Newt mirror is probably pretty good. Concerning the 10 inch newt: I have been assuming that...
I'm trying to get the program running using the C11 test images in the files section. After I open the files and set the parameters, I click on the tests...
Hi Bob, Maybe I see what is happening. The thresholds have not been set yet, and the default thresholds do not work for those images. Try this.... Using...
Hi John, OK some new weird things are happening. First of all I have version 2.2. I couldn't find the older 2.0. When I do as you say and open those images,...
Hi Bob, ... have ... OK. Version 2.2 will give about same results as verion 2.0. ... behave ... cocenter ... It is very important to get the thresholds right....
Hi guys, Why can't you use one single color FITS image from a saved Registax operation? In other words if Registax saves three color images, why can't you just...
Hi Bob, ... Roddier ... You can take a single color images from Registax, but my experience is that Roddier will not read it unless you change the FITS flavor,...
Hi John, I just created a new folder in the files section called "Tests by Bob Piekiel." In it are two FITS G photos of a sick Meade 12. One inside and one...
Hi Bob, I re-formatted your images using the Cookbook steps (using K3CCD and FV), and they are in your directory. They seem to work OK in Roddier 2.2. Back at...
Hi John, Thanks, I'm going to take them and try. That scope had really rough optics and lost of spherical over-correction. As to re-formatting the images, what...
I've put a file in the Tests by PGG folder for a scope I've been trying to test. In visually testing the scope I've seen not very good intra-focal rings and...
Group - the following snippets are from my posts to this group last fall (#s 595 and 601): "The 10 inch Newt reanalysis shows a larger spread of analysis...
Hi Mick, This is exactly the type of tests we need more of. Where are the Roddier images -- which folder? Are the details of the camera, etc., posted there...
Good work Mick, I cannot get the link to the Bath Interferometer to work for me, but is the secondary is also in the optical path for the Roddier analysis,...
Hi Mick, Do you have the original fringe images some where we could view them or could they be sent to one of us if possible? Great work!!! Ron Jones ... ...
... Dr. Biretta - I didn't post the images of the last tests (T5, T6) on the scope because I didn't want to hog storage space on the forum. I will post the...
... work for ... Mr. Crossley - thanks for the encouragement. Very sorry about the URL; somehow some digits got dropped in copying it into the message...
... them or ... Mr. Jones - thanks for the kind words. I have not so far posted the igrams either on this forum or on the Interferometry group because the...
... Dr. Biretta - I have placed the images on the forum: Files/Test Results Comparison/Reanalysis/FITS/T6 and T7 there is also a short text document with...
... Mr. Jones - concerning the fringe images used in my analysis: Dr. Biretta said there isn't enough storage available right now on this forum to take the...
Hi Mick, What are the parameters of your mirror? Ron Jones ... From: "m_hollimon" <mhholl@...> To: <roddier@yahoogroups.com> Sent: Sunday, January 18, 2009...
Group - with moderator permission, I have posted to the Files section, Zernike Coefficient Averaging folder, a brief write-up on some experimentation with...
Hello group. I am just starting and am working through the "cookbook" pdf text. I am using the english roddier 2.2. My laptop runs window XP. I can open the...
... focal length, but when ... parameters, nothing happens. ... obstruction size, but ... there a step I am missing ... Steve - I've been confused by...
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