SOHO Instructions Cut out the lower bus bottom

SOHO Instructions • • Cut out the lower bus bottom panels, sides, and top deck. Glue bottom panels together. Fold the side panels on the lines, bending tabs inward. Glue the side panels to form an octagon. Glue side panels to the gray surface of the bottom panel assembly (solar cells up). Glue top deck to the top of the side panels to close out the lower bus. Cut out the main bus and bus top. Fold and glue the main bus into a square column. Fold tabs inward. Glue bus top onto the main bus. Glue the main bus assembly to the lower bus, aligning the EIT with the solar panels (note markings on bottom tabs also). Cut out and assemble the equipment boxes, folding on the lines. Glue the boxes to the main bus in the places indicated. Put glue on the side tabs and edges of the boxes. Cut out and assemble the instruments. – – – • • • Roll the EIT into a cylinder, glue, and fold tabs inward. Glue the top and bottom to the ends. Glue to the bus in the marked position with the cylinder’s seam against the bus. Cut out the star tracker parts. Fold and glue the box together. Color the back of the two rectangles black, then roll and glue into cylinders. Apply glue to one end of each cylinder and glue over the blue circles on the box. Glue into position with the tubes pointing to the left (overhanging the edge of the bus, see diagram for detail). Other instruments are modeled as boxes. Cut out, fold on the lines and glue. Apply glue to the back edges of the instruments and glue into position on the bus as marked – refer to the spacecraft diagram for details. Cut out the thrusters, fold and glue into square columns. Apply glue to the bottom edges and glue them to the top deck, centered on the short faces of the octagon. Use a marker to add a dot in the top square of each thruster face aimed outward from the bus. Cut out the thrust mount and roll it into a cylinder – overlapping the ends to the marked line. Check the fit with the white circle labeled HGA on the bottom of the spacecraft, then glue. Apply glue to one edge of the thrust mount and place in position around the white circle marked HGA. Cut out the High Gain Antenna (HGA) parts. Cut the circle on the solid radial line, overlap to the dotted line and glue into a cone. Bend down the legs of the reflector tripod to form a tripod. Glue the end of one leg to the edge of the HGA cone at the seam. Glue the other legs to the cone equally spaced around the edge. Tightly roll the mast into a cylinder. Glue one end of the mast to the center of the white circle marked HGA. Glue the HGA cone onto the end of the mast, pointing straight out. Copyright 2009 by John Jogerst. Not for commercial use. For personal or educational use only.

Bottom panel, top side Lower bus top deck Main bus Lower bus sides FOLD Instruments UVCS EIT Main bus TOP Align this side with bus panel marked EIT. C ST-star tracker UVCS G EIT LASCO M CDS SUM bottom ST Equipment box 1 Solar Panel Equipment box 2 top Bus top Equipment box 3 Solar Panel M-MDI CDS SUM-SUMER LASCO C-CELIAS G-GOLF 1 2 Equipment boxes Copyright 2009 by John Jogerst. Not for commercial use. For personal or educational use only.

SOHO 1: 60 scale Solar and Heliospheric Observatory 9. 5 m across deployed solar panels HGA Bottom panel, bottom side Glue to panel’s top side. Tripod FOLD MAST HGA – cut solid line, overlap to dotted line to shape into cone, add reflector tripod. Roll HGA mast into a tight cylinder. Glue HGA mast into center of circle; glue HGA to top of mast. HGA surround, thrust mount – roll to appropriate diameter and glue on edge around the circle marked HGA. Thrusters, glue to corners on top of the lower bus. See SOHO diagram on next page for details. Copyright 2009 by John Jogerst. Not for commercial use. For personal or educational use only.

Solar and Heliospheric Observatory 1: 60 scale Cut out the graphics above and glue to a piece of wood/plywood/mdf to make the base. Use a ¼” dowel, 5 -6” long to mount SOHO. Cut a slot in (or split) one end ¾” – attach the spacecraft by slipping the solar panels into the slot. Drill a hole in the base for the other end of the dowel to display the spacecraft in the attitude you want.