
Exposure time for the CCD camera of the telescope?
I'm considering buying a medium-sized telescope to see and astrophotography. I am also probably buy one of the Meade CCD cameras. The question I have is when taking pictures through the telescope CCD functions as astrophotography of the old school where you had to have a shutter open for a few minutes to hours? I ask this because I love to have one of Dobsonians Meade (the Intelliscope 8), but the scope has been tracking engine. The last time I looked into buying a scope, you had to get a motorized assembly to fix on an object and track permitting prolonged exposure to stay on the subject. Celestron has a smaller scope (130 mm StarSeeker) that will follow, but I wanted something larger for objects deeper and weaker. Any advice or information?
Check out Orion XT8 Intelliscope version, or hers. Meade Orion prefer because I have had much better results with the customer service department of Orion.! Also I echo the sentiment of not starting in astro-images immediately. You have a pretty steep learning curve ahead of you, learning to find their way in the sky and how to properly operate your telescope. Get some experience with the new telescope under your belt.! But since the question of image, I feel you deserve an answer. Once you feel totally comfortable with your telescope and the night sky, and still want to get into pictures, here's how to proceed: 1. With a little practice you can get some wonderful images of the moon and planets through your Dobsonian telescope. All you need is a camera adapter to mount the camera the scope. Since the exposure times to be much less than a second, no need guidance. Once you want to go beyond that, things get very different in a hurry. At that time, the most important single part of your configuration will be mounting. Much more important than the telescope. What most people do not even think is that the optical tube Dobsonian is just a simple Newtonian reflector. Simply take the underground out of the optical Dobsonian mount, remove azimuth bearings and get a set of scope rings and mount the tube on an equatorial mount. This makes a very good picture settings for very little money to spend optics, especially since you have already gotten good use of it for visual observation. However, it needs to mount a substantial enough size to handle the optical tube. The Orion Sirius mount does a good job here. Check out the catalog of Orion. If I could afford it, I would get the Orion Atlas Mount. (My old 10 "tube Optical Dob mounts on the Atlas exactly as described above and takes great pictures) These brackets are provided with ports to allow self-guided long exposure images deep space. Now you have the right scope to mount images. What now? Well, you need a laptop to run the cameras (to be need another camera to guide long exposures), to run the assembly, and program for this. It is also necessary software to process your images once take pictures. Sometimes you need to have dozens of images and combine them to obtain a final image, because otherwise we would have to take exposures that could be time long! I think you get an idea of why we advise against any image until you have a little time in the chair with his telescope. Anyway, the Orion 8 "are Dobsonians excellent value for money and are very versatile and easy to install and operate, in other words, are excellent with the boot Telescopes ability to be used for other jobs as you learn the ropes. Adolph
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