Last updated: 31 December 2006
This page documents the Meade Deep Sky Imager and DSI Pro comments, tips, and photos. Contributions welcome. In order to showcase the DSI you may occasionally see images taken with other telescopes on this page.
Subject: DSI-II Color Imager Color Combined Images: Sent: Saturday, December 30, 2006 22:42:49 From: M. J. The Madjordainain (email@example.com) This is for Stephen Olson, Steve what is happening with your DSI-II Color is that your have your Imaging process set to FITS Format and "Save all Uncombined images" (This is a GOOD thing!) As the imager is taking the subframe shots it is splitting the LRGB colors into separate subframes for each of the color channels and storing the LRGB subframes as -filenameL - filenameB - filenameG - filenameR. What this means is your will have to reassemble them using the RGB Merge command/tool found under the "color" menu on you Autostar Image Processing Application. You would open the L frame in ASIP then go to the Menu and select the RGB Merge, from there you select each of the RGB subframes with the browse button under each of the color frame selection boxes. The hit the preview button and use the Gamma; Color Balance; & Saturation tools under the color menu to adjust the colors & contrast to your liking. OK about now your thinking and just how is this a good thing, I wanted one shot color! Well you CAN do that too with the DSI-II C, but you need to set your image capture process to either of the following formats - .JPG; .BMP; TIF; Or fits3P. You can also set the image capture to just save the combined finished image in the image capture set up too, but I advise you to keep it like it is as this makes for the best way to process your images for the best finish. The Save All Uncombined Images setting works for all formats too, the process under that setting still saves you a combined final frame in each channel, it will be named - filenameL.Fts (or RGB depending on the color channel the subframe is from), where as the uncombined subframes will be automatically named in numerical sequence such as -filename-1 filename-2 filename-3 ......... and on to the last uncombined subframe. The reason having your Autostar Envisage Capture software do it this way is it allows you to better process your files to the better finished image. In ASIP 90% of the processing functions only work for monochrome 16bit files, having the colors already separated, yet still aligned means it you can do the processing without having to first separate the color channels. As for the save all uncombined images setting it is a very good thing, Envisage is sometimes a little 'brain damaged' when it comes to picking the best subframes to combine or rejecting the "bad ones". Your better off to use the ASIP "Group" functions to visually do a quick exam of each subframe and then having made note of the best frames kick all of the others & the calibrate, process & combine the ones you picked as the best. If you just want some quick images/photos set your Envisage Capture to .bmp or .tif, just remember when your shooting your image in those formats what you see on your monitor screen is what you get, so tick off the Auto contrast for sure & manually adjust your Gain; Threshold; & Histogram sliders to display the color image you want Envisage to shoot. Under the "quick & dirty" mode you can elect to save all uncombined or not, grabbing another image processing software such as Registax (freeware) to stack, align, & process your color images. Good Luck & Clear skies! The Mad One Mark Jordan Greenfield, IN PS Stephen Feel free to drop me an email if you have any questions! The Mad One
Subject: Stacking images the correct way? Sent: Monday, December 25, 2006 19:12:35 From: Stephen Olson (firstname.lastname@example.org) I love your site. It has soo much info. Thank you. I just got into imaging. I have an ETX125 PE, DSI 2 color. When I take pics of M42 I get 4 files. RGB and L. I also get many of these say between 5-100 images of each color depending on the time i take the pics. I get all that so far, but shouldnt the pics have color in them before anything is done? Even when I stack them they are black and white???? Is there some documentation that you have for the Autostar Suite Software that would be helpful? I have tried Deep Sky Stacker and it seems easy to use, but I may be doing something wrong. I am just looking for something that has all the info to take and edit pics in one Article. I really appreciate your help and just love your site. thanks steveMike here: I don't have the DSI II color imager but would have thought it would shoot in color (the Pro model is black and white and uses color filters to achieve colors). Perhaps you have selected the wrong model in the software (if that is possible).
Subject: M42 Great Orion Nebula Sent: Saturday, December 2, 2006 17:26:34 From: Tom and Lori (email@example.com) Wish I could say this is "First Light" with the DSI II, but it's not, it's the second. Thought I'd share with you and the other Mighty ETX folks. Nice seeing you at OPT a few weeks ago. Thanks for the book signature as well. Looking forward to Southern California clear skies. Tom
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