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I was doing some camera testing on Friday night and found something unexpected: the Abbe-Porter experiment (I think) I used a laser pointer shining straight...
One demonstration that is fun to perform is to shine a laser pointer onto a CCD (no other optics) and look at the 2-dimensional diffraction pattern formed on a...
but not a back-illuminated one right? erdmanpe <erdmanpe@...> wrote: One demonstration that is fun to perform is to shine a laser pointer onto a CCD (no...
Hi all After an abysmal May as far as weather is concerned I have finally got my filter wheel up and running and as the sky was clear last night (it was up...
Gordon, good to see you out imaging,even if between clouds. The weather has to be more cooperative soon, so keep trying, you are off to a good start in any...
Hi I have had a go at reprocessing my image of the Pelican Nebula in emission line colours as it was a bit noisy and the colours too "psychedelic" to say the...
... people ... Gordon it is improved from my perspective: it appears that you were able to apply flats successfully and eliminated some localized gradients At...
Hi Richard Thanks for the comments, I didn't actually use any flats and the only darks I used was the simple auto dark subtraction facility in Maxim DL. Just a...
more exposures of the same exposure length: assuming the filter passbands to be the same or close the idea is to improve the s/n ratio so you can stretch it...
Hi Trying to make the most of the clear nights, no clouds last night so was able to do 6x10 min Ha 8x10 min OIII 8x10 min SII all unguided with the TMB 115 on...
Hi Richard I will get round to doing this at some point, I may experiment with "T shirt flats" to begin with to see how I get on, in the meantime I want to...
the reason I bring up the flats is that nearly every telescope has a hot center where the light intensity is brightest with the filters introducing their own...
I have been having fun with a new Proline 9000 for the past month or so. Mostly I have been making various measurements and assessing data but I have had a few...
this one has Halpha in it too. There is 10 x 5 minutes Ha, R,G, B I mixed the halpha 50/50 into the red and put 25% into the blue to mimic the Hbeta line...
Hi It was one of those nights again last night, trying to decide whether to try some imaging or not. There was patchy cloud dotted over the sky with a few...
that's a great target Gordon and a good start on the image too. You can spend the rest of the season photographing that area and still not find the full of it....
Hello Another difficult night with clouds last night but managed to salvage 7x10 minutes subframes from the 21 I took, again all unguided with Ha filter. Look...
this is another test shot from the new Proline 9000 camera. I used it on the AP180EDT f/9 and the AP field flattener There was a lot of moon out. I used a 50 x...
Hi all A good bit of weather last night enabled me to get 14x10 minutes unguided on Sadr in Cygnus taken with a Ha filter, I tried the same image last week...
... can ... http://www.imagingtheheavens.co.uk ... simple ... and ... break ... Gordan that's an awesome image give me a call while you are in SF. I am local ...
Hi Richard I like that image, it is one of my proposed targets for later in the summer (my house it blocking it at the moment). I will be very interested to...
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