Gerd visits the ccd-imaging-technology group from time to time, you may look there ... From: Rainer To: Astroimaging_filters@yahoogroups.com Sent: Sunday, May...
Hi Richard, Thanks. Also after many hours of searching in the ner I found some very interesting pages from french astronomers with all sort of tests regarding...
Hi Ed, Of course http://astrosurf.com/pellier/filtres http://www.astrosurf.com/pellier/comparuvfilters http://www.astrosurf.com/pellier/testfiltresbleus My...
Hi Ed, You wrote ... I am not mixing any colors. It is a one shot color camera :-) and I use auto white balance. The fact is that buying and using an UV filter...
sorry, I meant to include this link too: http://www.astroamateur.de/filter/uvirblock.html ... From: dieterkuespert To: Astroimaging_filters@yahoogroups.com ...
as I understand it, there are two baader UV filters: the older 1.25" and the newer 2" the 2" doesn't leak IR as it is reported ... From: dieterkuespert To:...
Hi Richard, I got the 2 filters during NEAF 2007 e.g. 28th of april so it was less then 1 week ago. saludos Rainer ... 1.25" and the newer 2" ... Filter of...
The timing of your purchase is indeed recent, Rainier. I am confused why you bring that up: what does that have to do with the 2" new style UV filter from...
Hi Richard, I do not understand what you wrote. Both of my filters do plet pass IR as far as I have been able to see. I have tested the filters e.g. both the...
Hi Richard, In reference to your private e-mail that only the 2" filter is new and not the 1.25" I just shot the plain sky with bith as well as for comparison...
UV and IR are both outside of the intended bandwidth of your sensor. The red, green, and blue filters used in the bayer matrix aren't necessarily going to...
Hi Ed, Thanks for the lenghty explanation. The used camera has NO UV/IR cut filter. Does it even so apply that it is outside the bandwidth ? It would be good...
.. I understood Hi, After reading Ed's long post I decided to make another test. This time using my monochrome DMK and my LRGB-HAlpha-OIII-SII filterwheel. As...
Hi Rainer, I seem to recall that you eventually did get around to purchasing a modded DSLR? If yes, and yours has no UV/IR Blocker over the sensor, you can...
Hi Samir, Thanks :-) but I am not going to throw more money, buying something like a grating from Baader :-), into something which is more or less fiddled out....
http://masil-astro-imaging.netfirms.com/SWI/venus%205-8%202349.jpg there's a nice image of venus shot with the 2" filter. As I understand it the 1.25" filter...
Hi Richard, I am not able to see the image as a page pops up with the message 403 forbidden. Is it in color or black and white ? Thanks for that info. So I...
Hi Samir, when I saw your comment about testing the Baader UV filter using a TV remote, I thought that was a great idea. So I got out my filter sets and began...
Hello everyone. I am new to imaging with filters. I just upgraded my SBIG 7XME and bought the filter wheel with RGB filters. Now I am looking at some filters I...
I have used the Lumicon [OIII] and it does work. It is a bit wide but beats not having one the Optometrics is not one I have used. But you may as well try them...
Hi, I have been meaning to ask this question for some time. I notice that most of my Ha images (using a Schuler Ha filter) have many one, two, or more pixel...
Could you give us a bit more information about your setup (camera, etc) and exposure conditions? And if you can, a sample image (uploaded to the file section...
sounds like frosting. have you tried shooting an image with the sensor at room temp and then cool it down to see if it changes? some cameras don't have a dry...
I meant to respond to this two weeks ago; sorry for the delay. Recall that the energy received by the TV goes up by the inverse square of the distance. The...
Hi Ed, there are already examples of this in photo album "NGC253". The number at the end of each photo is the number of exposure seconds. If I remember...
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