Homemade barn door tracker astrophotography,how to make halloween wood crafts,shed made out of old doors repurposed,pvc disc golf storage unit - Test Out

The base board of the mount attaches to the wedge via a hinged wooden plate at the lower end and an adjustable spring-loaded screw at the upper end. When setting up the mount for a photo session, the latitude adjustment knob is first set to its mid-range.
Because the weight of the camera causes some flexure in the whole assembly, polar alignment must be performed after the camera is mounted. The Clear Sky Clock is a prediction of when Astronomy Boy's Black Swamp Observatory will have good weather for astronomical observing.
The CG-5 German equatorial mount is a Chinese-made clone of the well-known Vixen Great Polaris (GP) mount. A barn door tracker (also known as a Haig or Scotch mount) is a tracking camera mount that lets you get started in astrophotography, even if you don't own a telescope.
If you're looking for a build-it-yourself astronomy project, but constructing an entire telescope seems too complex, how about making your own eyepieces? The stuff of myths and legends, the constellations of the night sky tell stories as old as mankind. The most famous catalog of deep sky objects is the one compiled by Charles Messier in the 18th century. Start the disassembly by removing and setting aside the manual slow motion knobs and the plastic RA motor cover. To separate the sections, remove the two large hex head screws which pass through the Dec housing and into the RA housing on either side of the opening for the polar alignment scope. The inside of my CG-5 equatorial head contained more than a dozen friction-reducing clear plastic washers (or spacers).
For the refurbished equatorial head to work properly, it is important that each washer be replaced in its correct location when you reassemble the head.

To separate the two parts of the head, remove the indicated screw and the matching one on the other side of the Dec housing.
The tilt feature of the tripod head is then used to set the angle of the mount to the observer's latitude. The threaded holes have a 6mm metric thread, so I inserted a 6mm x 30mm screw in each hole from below. Turning the adjustment knob provides fine tuning of the mount's latitude angle, which is helpful for polar alignment.
I use SkyMap Pro to print a detailed finder chart of the region around the pole that matches the view in the finder scope. Each time the camera is re-pointed to a new part of the sky, and anytime the lens is changed, polar alignment must be re-checked and adjusted if necessary. The brightest star to the upper left of the comet's head is the famous variable star Algol.
There are features here for newcomers, for do-it-yourselfers, for deep sky observers, and for astrophotographers.
Although the CG-5 is quite popular, many examples suffer from sticky movements in both the right ascension and declination axes.
Check out Astronomy Boy's barn door, along with all the information you need to build your own. It's surprisingly easy to do if you have some basic woodworking skills and a few common tools.
As these photos demonstrate, it's easy to make beautiful constellation portraits with simple equipment. As these photos show, it was easy to capture beautiful images of Comet Hale-Bopp on film without complicated equipment.

The latitude wedge is placed over these three screws and held firmly in place with wing nuts. While viewing through the finder scope, the entire tripod is carefully moved in azimuth and the latitude screw adjusted until the mount is pointed at the celestial pole. This is even more important in the southern hemisphere, where there is no convenient bright star close to the pole.
Reproduction or redistribution of the contents of this site in whole or in part in any form or medium without the express written permission of Jeff DeTray is prohibited. This was before I realized how much easier the job becomes when the two sections are separated.
So check very carefully at each step to be sure you've found all the washers, removed them, and noted their locations for later re-assembly. This is a good reason to make notes and to keep several containers on hand for storing parts. It is custom-designed for my latitude (approximately 43° north) but has enough adjustment to compensate for modest changes in location. Check out Astronomy Boy's guide to getting started in astronomy, including telescope buying advice, lists of informative web sites, books for newcomers, and local astronomy clubs and observatories.

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