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Found 35 results

  1. Hi! I am afraid that I am on the scrounge for information again from the good people of SGL - one day I hope to be able to give back to this forum as much as I am receiving in these early days. But for now I am mainly all take! I am starting to look at guiding for my astrophotography having read a few posts here and there about using a webcam as a guide camera. There is no way at the moment I can afford a dedicated guiding system - scope & camera. I know from reading other posts to questions similar to this that I can use PHD together with EQMOD to run the mount and that you can use a webcam in certain situations as a guide camera. My question is: do you keep the original lens on the webcam and use it Afocal; or do you take the lens off and direct the light straight onto the chip as you do with imaging with a webcam? I wanted to try this system with my CG5 Advanced GT (this mount has the auto guide port) to see if the other equipment I have (laptop, power pack etc.) can handle it before I start to spend out on more advanced stuff at some point in the future. I have a 6x30 finder scope on my C8 but I also have a 20x50 Mirador spotting scope that I thought I could mount on the main tube if that would be better to use as a guide scope. I appreciate that the magnification on the spotting scope is a bit high but I am using what I have got in order to save money! I hope to be getting a second hand DSLR soon which I will be using for imaging rather than the Philips SPC900NC which I am using at the moment. The SPC900 could then become my guide cam (if it doesn't need its lens ).
  2. A while back when the weather was particularly lousy, I decided to start a project to modify a webcam for astronomy use just for fun. I know dobsonians aren't meant for imaging but I want to find out what and how much that can be done with this setup anyway. If nothing else, I'll get a laugh trying (might learn a thing or two as well). So off I went to purchase a cheap webcam in order to rip it apart and start experimenting. Thought I'd share some pictures to start with and then update the thread as the progress of this silly little project/experiment continues. Not knowing which webcams are suitable for astronomy use, I just picked a cheap model, the Microsoft LifeCam HD 3000: Unboxed and a closer look at the cam: Tools of destruction: The webcam proved to be more difficult to pry open than I thought: Edit: Doh! I accidently pressed Post New Topic instead of Preview Post. *sigh* Edit 2: typo.
  3. Seized the opportunity offered by a break in the cloud to get my 1st imaging session in a very long time in. A bit rusty, so went for some Lunar imaging.... not entirely sure of the name of some of the features... Bailey (background) and Tycho (foreground) ? Hevelius (?) with 2.5x powermate - a bit fuzzy: No idea what this is - wasn't paying attention: Have to say, imaging the moon is a lot of fun. And when not capturing the preview screen makes you feel like you're flying over the moon! Awesome Have fun
  4. Having just read this great guide here on PHD:http://stargazerslounge.com/topic/188777-phd-guiding-basic-use-and-troubleshooting/ Would people be willing to post up their settings so as to give people a known starting point that works or at least a good starting point?As I think it's hard to know what settings to choose in PHD. Something along the lines of: Webcam model: SPC900 Type of guide scope: 9X50 Skywatcher finder scope Then list your settings for PHD This way,it can be kept all in one place for future reference.Sound like a good idea or a non starter?
  5. Mountain View

    ASDA Webcam mod

    From the album: My Astronomy Mods

    Inexpensive webcam that I hope to mod for astro work

    © Mountain View - Gordon

  6. Hi, can I please ask for some help/advice on imaging DSOs with a webcam and laptop? Last night was the first night for quite a while that I have been able to get out and use my new 'scope. I used it about a month ago to look at the Ring Nebula (M57), Dumbell Nebula (M27), The Great Globular Cluster (M13) in Hercules amongst others and was waiting for the chance to do some imaging. Well, last night I got my chance and set the 'scope up, let it cool down, did an alignment with an additional 3 calibration stars. I then got the mount to swing to M57, got it right in the middle of the eyepiece and then swapped to the webcam (Philips SPC900NC) and...nothing. I tried again and again swapping between the eyepiece and the webcam, adjusting the focus, changing the gain, exposure, brightness and the other one which I can't remember at the moment and...nothing. I even focused the webcam on Vega and then swung to M57 so I at least knew that the focus should be right, but then I couldn't tell if the 'scope had swung dead on to the nebula! PLEASE...what am I doing wrong? Or am I just expecting too much from my set-up. Will I never see a DSO on a laptop screen due to their low light levels? If that is the case how do you know that you have got your subject in view? It was really frustrating and probably caused me to pack up sooner than I would otherwise have done as it was reasonably good seeing and nice and warm with no dew build up. Any comments, suggestions would be greatly appreciated as I am intending on going out again tonight.
  7. I guess a year or so ago I bought one of these from Amazon: https://www.amazon.co.uk/Andoer-Webcam-Camera-Desktop-Computer/dp/B00CDJKNNK Today (finally) I decided to try it with my ST80 and Sharpcap. Wow! The images I got back from it after removing the lens and adding an old ep barrel were good (on a terrestrial test) with really clear images. Just need a cloud free night now to try it out! This camera comes apart by undoing 4 screws and with a slight mod to the silver trim and some glue it was a real easy job. If it returns some good planetary pics I’ll be well impressed for £2.99!!
  8. It has been too long since I contributed anything to the forum, so I thought to share with you my latest try in planetary astrophotography. Actually it is my first try with SW 300p Goto Flextube dobsonian which I recently acquired. I wanted to try out how the system tracks for webcam astrophotography, which is my second point of interest after visual observing. In short - it tracked quite well - no jerkyness in tracking, very smooth, stable and centred for a long time, and I am also very happy with my old motor focus which helped me out tremendously. The conditions were very poor though, and the resulting picture is heavily post-processed. At least it managed to capture the colour quite nicely. For caputre, I use a modified Prestigion PWC2 webcam, Baader 2.25x barlow and UV/IR-cut filter. You can see the imaging setup in the second picture.
  9. Members, Trying to get my head around imaging with a DSLR and read that a WEBCAM is actually better for planetary targets due to file size and weight therefore, can I hypothetically use a DSLR afocally but on the record video setting and still separate the frames afterwards, edit and stack? Or would they be too large? 9.25 AVX with Canon 550d Rebel2.
  10. I purchased a used Logitech Webcam C160. Turns out that the chip is from the Quickcam SP4. 640x480 1/8" sensor. Would anyone here know which CMOS/CCD is it based on?
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