i quick question for the group expertise : I do need to setup an experiment with a very high out of band rejection situation, more than 1e7 factor. ...
the main issue would be internal relection between the filters. Â i too have thought of this issue, with stacking 2 lpr filters, one with good 589nm rejection...
thank you Paul, actually, this is for non-astronomy usage... I had to find something else fun for these bad seeing nights. Having fun with single molecule...
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sounds like it would work the way you stated Benoit you could play some games by tilting one relative to the other and exploit the blueshift to give you a very...
i understand they make fine filters ... From: Benoit Schillings To: narrowbandimaging@yahoogroups.com Sent: Tuesday, June 09, 2009 6:56 PM Subject: Re: [NBI]...
Hello, This is my first post here, though I've been actively reading all the posts and some of the excellent articles that members have written. I find I've...
the main advantage of the KAI4022's electronic shutter besides the ability to take non-saturated images of bright objects like the sun or moon (really short...
I have a ML4022 and have used it for narrowband imaging a little bit. the sensor is the KAI4022, same as the SX you are considering. I have not used a camera...
I have used the SXV H16 in an astronomy project, setting out to characterise the performance for photometric measurements. Â the results, I am afraid did not...
Hi All Clear weather last night so I set everything up and then disaster struck, my LVI smartguider wouldn't work, it kept stopping in the callibration phase....
Thanks very much for all of your responses. They have confirmed my reservations about the 4022 sensor and highlighted other areas where it falls short. SX...
I caution you to not believe the comment about the shutter in the S&T article the experience of the author differs from everyone I know using ML cameras. maybe...
Hi All I previously (yesterday) posted a Ha image of this subject and was intending to add some OIII data to it, well the sky cleared after a rain shower last...
Thanks Richard, Even with my limited knowledge I can see what you're saying. Apologies if this is a bit off topic but I notice you are using ultra narrowband...
I have been attempting to use the '155 f/7 with the PL39K for three weeks now. The faster focal ratio, f/7 versus the f/9 of the '180edt, means nearly a 2x...
Fantastic image Richiard! Beside the immense field ("it's full of stars"), the processing is great! The usual masterpiece! Thanks for sharing it. Luca...
well thanks Luca on the processing: I do very little besides stretching the levels the extra (photoshop) adjusted curves used color noise reduction used...
Hi Richard Cracking image, so far I think this is the best one you have done so far with the new camera, it seems to be really suited well to this type of...
Hi All Last night was one of those nights when you want to tear your hair out, all the equipment is running smoothly, skies are clear (average seeing though)...
nice! get some more data and push the background hard and you will have a spectacular image Gordon your image scale is great ... From: Gordon Haynes To:...
Hi Richard I am planning to try and get at least another 2 hours on this for the Ha which was my intention before the clouds came in, the image scale with the...
Hi Gordon. Â You have my sympathies. Â At Kielder back in oct/nov, we had just got the EM200 polar aligned, camera on focussed, under wonderfully dark skies...
Some years back a Canadian researcher, Dominick Lagrois, contacted me regarding the use of my image of IC1805 for his doctoral research of the W4 region, a...
I have imaged NGC7380 many times using emission line filters but this may be the first time I did so in pure RGB it isn't as prominent in RGB as it is with...
I think it looks pretty good in the widefield. It kinda puts the object/s in perspective. Â again, the sharpness of stars you get amazes me, even working at...
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