Hi Mark, Using my LX90 Classic (8" SCT), I was always more than happy with the star shapes in unguided images of up to 90 seconds - pier-mounted, in an...
Dear Group well. I couldn't resist taking photos tonight, december 31 2008...our Moon and Venus pretty close together. Hope you like them All the best Cor. ...
Hi all, First of all, a Happy 2009 and a lot of clear skies. Here we go again :) One thing that came to mind. Would it be better to open the separate RGB...
Thanks for sharing. I really liked the crescent moon over Fullerton, CA,03-10-08. regards, Jim ... From: "kandra kargo" <c.simons@...> Dear Group, I...
... to ... If you haven't the patience or band width to down load the full res version, try these under 1meg crops of the interesting bits in the original full...
Nice shot Mike. jim ... From: "Mike Sidonio" <m.sidonio@...> ... to ... If you haven't the patience or band width to down load the full res version,...
Please reply privately or provide a pointer to an appropriate group. I am not in any of the computer related groups at this time. Comcast started treating my...
I don't understand the details, but I do have UPS that sends me email when there is a problem. It may be different than what you have available. I set up the...
I hadn't heard of jmail, I will look into that. Interesting that you can provide a username / password, can you also specify the port (SMPT uses port 25 by...
Could someone clarify (shed some light on) the differences and pros and cons of Front illuminated vs. back illuminated vs. interline CCDs. I am confused about...
This is a typical setup for ISP providers to not allow SMTP traffic unless your on the local network. A couple of things to though since Im not quite sure what...
Are you talking about a one shot color RGB image? If so you can extract the L and process that separately which is a normal to do and then combine the it back...
... Hi Robert, No I was talking about monochrome sensor through RGB filters. But I experimented myself a bit and found that it is easier to process the RGB...
Hi Chris to answer your question, please read my articles about CCD stored in my personal web page www.geocities.com/rbartali/ enter into astronomy section ...
Roberto, Thank you for directing me to your paper. It is rather long so I will need to do some studying in order to fully understand the differences. However, ...
Hi Chris, Here is a very brief summary: 1) Back illuminated CCDs have the highest QE and spectral bandwidth, but suffer from high dark current (need very good...
Thanks, Terry, it does help quite a bit! Chris A. _____ From: ccd-newastro@yahoogroups.com [mailto:ccd-newastro@yahoogroups.com] On Behalf Of Terry Platt Sent:...
That works fine if you are working with an APO and/or the filters are all individually focused. Best practice is to process each individual color seperately...
Hi all, I managed to get some imaging time over the holidays, still working on one of the images but here is one that is finished. This is a deep widefield of...
I don't know where this advice is coming from. As Eddy asked, what does using an APO have to do with the decision? I would almost never recommend working on...
Likewise, I have never found it benificial to "xtract" a lum from a one shot color camera. After all, there is no lum, you just desaturate the color image and...
Right. It may sometimes be convenient to work only with the Lum data in Photoshop, in which case you can make a copy of the RGB layer, desaturate it, and use...
Why not in PS convert to LAB, select the Luminance channel, working on that and then reconvert back to RGB? Thkx...joe :) "May You Go Among The Imperishable...
Because with an L layer and an RGB layer you can not only use tools that are non-destructive for many operations (e.g., curves), but you can go in and out...
For those of you who have already inquired, confirming emails have been sent. I am finalizing the order for One Piece Stainless Steel Extended Counteweight...
Hi all, i'd like to share an image of M82 taken with focal length 2500mm 10'' ARC and SBIG ST-10XME with AO8 http://www.dsi-astronomie.de/M82NAO8.html regards ...
Is there any advantage in taking flats with the CCD at the same temperature that the LRGB images were taken? If the flats are all between 1 and 10 seconds, is...
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