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In order to take pictures with a long exposure time, we need some method that allows us to automate the movement of the telescope. This is because there are inherent imperfections of the mount, positioning and other factors that may make us move and even losing the object in a very short time. There are automated methods with a very low cost that will allow us to obtain long-exposure photographs with a margin of error is much smaller than if we rely on the movement of our mount.
Preliminary Notes
Despite the comments in the introduction, say the project is still being "alpha" because although I have already ventured into the construction of the self-guided rings, I have not done any field testing, although some evidence of performance under ceiling.
I must also comment that if I name any particular trade is for informational purposes only.
Finally note that the components presented here are just one example of many that we can use for its realization. In my case I bring my personal experience with them and then we can make changes that allow, of course, improve this little project. If so, do not hesitate to leave your comment.
What do we want?
What we need to do is make a program from your computer, move the frame automatically to compensate for possible mistakes we have made, for example, by putting the telescope station. We also know that the mounts are not perfect, but there are real wonders but very long time can lead to errors of motion and loss of timeliness in the stars.
Our intention is to parallel with our main telescope to a smaller one which couples a camera and let the software do its job, trying to move the frame without losing the object you are focusing.
Necessary components
Well, as we reeled before some of the components you need. What it must be clear of course is that in order to carry out our objective, it is imperative that our horse has a port of entry to that effect, otherwise it will be impossible to connect to the computer. If you need advice, you can always ask at your local astronomy habitual or astronomical group or association in your community. Internet forums also tend to be a very good and recommended for your reference.
In my case as I mentioned in other articles, I have an LXD 75 6 "Autostar # 497 that has a port for computer control, by which we can move it by using programs such as celestial maps (Cartes du Ciel) as I explained in these pages .
A more or less complete list of materials necessary may be:
- A camera for guiding. It could be a webcam-type camera, if we opt for this affordable solution, it would be best to buy one that had a lot of gain and light capture. Ideally, a camera with the possibility of change for long exposure, since we will almost always with exposure times of one or two seconds, get star bright enough to correctly position the telescopes. Anyway it is not required that the camera is modified. If it is very sensitive and have bright stars, our software can track more or less effectively.
- A camera for photography. In my case I use the Philips SPC900 webcam amended, as it is the cheapest and for follow-up tests, focus and messing with the software very well. Of course, I ask the king for this year or any other one of the more or less professional cameras that allow for higher quality pictures and resolution, type moon, ATIK or similar.
- Guide telescope. A telescope that looks suitable for guiding the Skylux that Lidl (70 mm in diameter, 700 mm focal length) sold on occasion, mostly because the price / quality ratio is very good. Apparently it is being recommended as I have read in forums and online, to guide the telescope's focal focal is similar to the main telescope. Anyway, if we already had two telescopes and one of them would like to use this feature, why not try? Learn insurance.
- Rings to hold the telescope guide. The following lines explain how to build with cheap materials and readily available. In my case, I bought everyone in Leroy Merlin, but most likely you can find the same or very similar at the hardware store in your neighborhood, for example.
Related Entries
No related posts found, but you can read this: Eclipse Moon December 31, 2009 .
3 Comments to "Build your guide tube rings"
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Hello!
Congratulations on the rings, and photos of the magazine! I see you have been helpful the "viguguías." This afternoon I have strengthened a bit because I noticed something of torque. I recommend that if only two torinillos screwed to the main gate you put a very wide washers (or two, a small and a larger one for better holding.)
Now enjoy!
Greetings!
[...] In fact my intention was to have come to make these first steps when I built the guide tube rings, but despite other drawbacks have them ready-made an appearance and delayed [...]
I have the etx70 at, and the 497, but connected to the program portail du cel cards and I do not detect it, np bone connects du cel tastings with the telescope