Page:HST Compton Chandra PaperModels.pdf/25

#6 Assembling the SUNSHADE DOOR and joining it to the HIGH RESOLUTION MIRROR ASSEMBLY

1. Cut out the SUNSHADE DOOR, and glue the back sides together.
2. Fold the door where indicated.
3. When this piece is dry, glue it to the HIGH RESOLUTION MIRROR ASSEMBLY at the position corresponding to 12:00 on a clock.

#7 Assembling the SPACECRAFT MODULE EXTENSIONS and joining them to the SPACECRAFT MODULE

1. Cut out the two SPACECRAFT MODULE EXTENSIONS, open the slots with the razor blade knife, and score the fold lines.
2. Fold the pieces together.
3. Insert the lower two assembly tabs into the SPACECRAFT MODULE. Insert the third tab into the slot in the TELESCOPE.

#8 Assembling and joining the SMALL THRUSTERS to the SPACECRAFT MODULE

1. Cut out the smallest SMALL THRUSTERS, and fold them where indicated.
2. Insert the thrusters into the SPACECRAFT MODULE EXTENSIONS.
3. Cut out the larger thrusters, and fold them where indicated.
4. Insert these thrusters into the SPACECRAFT MODULE at the positions corresponding to 2:30 and 7:30 on a clock.

#9 Assembling and joining the LARGE THRUSTERS to the SPACECRAFT MODULE

1. Cut out the four LARGE THRUSTERS.
2. Curl the paper. and insert the tab into the slot. Fold the upper end down, and insert the tab into the slot. When completed, the LARGE THRUSTER should look like the diagram.
3. Insert the remaining two tabs of each thruster into the remaining slots of the SPACECRAFT MODULE.

#10 Assembling the SOLAR ARRAYS

1. Color the SOLAR ARRAYS blue and gold where indicated.
2. Cut out and score the two arrays for folding.
3. Fold over. and glue the back to the front. There will be a white gap running lengthwise on the back of each array.
4. Cut a 38-centimeter-long piece of the dowel.
5. Insert the dowel through the holes in the SPACECRAFT MODULE.
6. With the dowel centered, glue the SOLAR ARRAYS to the dowel. Glue them along the white gap on the array back sides. The arrays should face the same direction.

#11 Making the LOW GAIN ANTENNA

1. Cut an 8—centimeter piece of the dowel. Using the razor blade knife, sharpen each end to a point.
2. Insert the dowel through the remaining holes of the TELESCOPE.

#12 Completing CXO

1. Join the INTEGRATED SCIENCE INSTRUMENT MODULE to the small end of the TELESCOPE by inserting the two tabs from the TELESCOPE into the slots of the module.
2. Add some glue here to hold the module securely.

The NASA Chandra X-ray Observatory model is now complete. You can display it by suspending it from the ceiling by a piece of thread or monofilament fishing line or by creating a base for it.

Model Builder Note: NASA is planning a fourth great observatory to study infrared wavelengths. When the Space Infrared Telescope Facility (SIRTF) is near launch, a model of this spacecraft will be added to the set.