Monday night was the first time I used the TV-76/ Canon 20Da combination for nighttime astrophotos. It seems like a good setup, but there are a couple of ...
Hi Rob, That's a really nice composition of Tuttle/M33. Yes, it does look like there is a little field curvature so I think a field corrector would be helpful....
My 40D has the same horizontal problems. I haven't yet done my own darks and flats for that camera, as I am still experimenting with control and exposure. If...
... I forgot to answer this... Did you do dark subtraction? The dots look like classic correlation noise (that is the noise is probably tracking with an offset...
My thinking too. Forgot to mention sigma reject :-) Pete _____ From: TAC-imaging@yahoogroups.com [mailto:TAC-imaging@yahoogroups.com] On Behalf Of Ray Gralak ...
A field flattener would probably help a great deal. Before going with the televue, take a look at some of the reviews of the other competitors and compare....
Not flats. You need to take darks. I see you are using ImagesPlus. You can use that to process the darks, and process the images w/ the darks. Flats will...
... like ImagesPlus has proceedure that automaticly applies the darks. Since the MasterDark file was created I have to assume it worked. I shot the darks at...
... expected ... Rebel XT ... take ... that ... A dedicated camera would work better. The photo cameras were never designed to do astrophotgrahy. But then I...
The flats will solve another problem. I have some areas that generate dark spots. You can't see these the way I processed the image, but occasionally I can...
... Patience is key. Also, combining an image of a fast moving object (comet) presents a challenge.. With the internal darks there will be a gap in time. ...
Hi all, Last sunday night wasn't too bad. The CSC forecast said the seeing would be poor and that seemed to be confirmed by the lovely twinkling Mars! Still I...
Hey Darren, very 60's, to bad the seeing wasn't better. I was out that night also (At least I think it was that night, the holiday schedule has me confused...
Thanks Iver - I was beginning to think everybody must have been blown away by the storm :) It definitely isn't a good image - I guess I may have gotten a...
Very nice image there Ray, the juxtaposition works really well. I missed out on any imaging, with traveling to the UK for 2 weeks plus coming back to this...
I'd agree with Ray's synopsis. I went through trying the evals and went with ACP because it's not a "black box" - the innards are all available for you to...
Hi John, I think that the 0.08 arc-second seeing was because the domes were closed because of strong winds. I think it usually averages around 1 arc-sec ...
I hope you'll pardon the post, but I've joined GSSP 2008 organizing committee, in part representing imagers, and I am REALLY excited about the prospect of...
Hi all, Whenever I need custom adapters, spacers etc made up, I still use the same guy in the UK I used before I moved out here. I was wondering if there's...
What filters should one use to get true galaxy colors (blue and red) what do they correspond to anyways ? ... is it O-III, H-alpha etc. ? not to be confused...
I'm not too sure what you're asking? The Canon will record in color (well, after debayering) and assuming you've calibrated the relative RBG levels correctly...
If I really need a _custom made_ part I use Precise Parts: http://www.preciseparts.com/ppmain/index.html They are very knowledgable and helpful. A lot of...
My first attempt at M31 with the small scope This was shot from the urban light polluted location near downtown of Palo Alto, CA last December 2007, Sky ...
Sorry the image is here: http://www.astrophotogallery.org/displayimage-1126.html My first attempt at M31 with the small scope This was shot from the urban...
Hi Alex, Pretty neat. I'm not sure about your dark-point though - maybe bringing it down a little might make for a better image. Still a fine job! Darren. ... ...
Hi, since it's slow on the list I thought I'd share my current efforts. M78 is a standard LRGB, the Cone and Horse Head are both Ha,Ha,G,B images. I'm trying...
Hi Iver, They all look excellent. I tried M78 and it's pretty tricky, even if you do catch the good weather, so I appreciate how good your one is! I'm trying...
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