Apertura Dobsonian Telescope Owner'S Manual Download Page 1 | Manualshive

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Summary of Contents for Dobsonian Telescope

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Page 2: ...T A FULL APERTURE SOLAR FILTER INSTALLED YOU RISK SEVERE EYE DAMAGE AND PERMANENT BLINDNESS Please take a few minutes to read over the assembly instructions to familiarize yourself with the individual...

Page 3: ...DOBSONIAN TELESCOPE Assembly Instructions and User s Guide...

Page 4: ...1 of 2 Dobsonian optical tube 8x50 90 degree right angle finderscope Plastic tube cover Laser collimator 2 silver side bearings Fan power pack batteries not included Eyepieces 30 mm 2 format 9 mm 1 2...

Page 5: ...roller bearing disc 2 metal discs 1 Four hole eyepiece tray 1 handle 3 black plastic feet 1 Allen wrench 1 adjustment knob assembly 1 bolt with knob head 1 large washer 1 small bearing washer 1 small...

Page 6: ...ical IMPORTANT Make sure the flat face of the embedded T nuts are on the BACK side of the board opposite the handle Attach BASE RIGHT to BASE FRONT with two long black Allen screws The BASE RIGHT is t...

Page 7: ...the wider side of the feet facing the board The bottom side of this plate has the brass fitting almost flush with the surface see inset picture Locate the TOP BASE PLATE The TOP BASE PLATE has severa...

Page 8: ...the recessed holes is facing away from the BASE HOUSING Place BOTTOM BASE PLATE with feet facing down Insert AXLE SLEEVE into the Center hole ROLLER BEARING ASSEMBLY Place one of the two METAL DISCS...

Page 9: ...TAL DISC It can be flipped either way Follow this with placing the second METAL DISC over the ROLLER BEARING DISC It can be flipped either way Pick up the BASE HOUSING with UPPER BASE PLATE already at...

Page 10: ...e parts Tighten the knob until it feels firm but not too tight TIP Tightening or loosening this knob is how you will adjust the amount of effort it takes to rotate your Apertura Dobsonian telescope on...

Page 11: ...ert the top bolt first do NOT tighten yet Then slide the BEARING ASSEMBLY up if necessary and insert the bottom bolt Repeat on the other side of the OPTICAL TUBE The position of these BEARING ASSEMBLI...

Page 12: ...P The metal seam of the telescope tube should be turned to the side of the base that has the handle BASE FRONT TIP The flat sides of the SILVER SIDE BEARING ASSEMBLIES should be facing up flat TIP Tig...

Page 13: ...Locate the 90 DEGREE RIGHT ANGLE FINDERSCOPE and attach it to the dovetail finderscope bracket on the side of the OPTICAL TUBE Use the thumbscrew to tighten the finderscope into place...

Page 14: ...inderscope first loosen the lens cell by unscrewing it a half turn Then turn the locking ring the other way to pull it back from the lens cell and expose the maximum number of threads on the findersco...

Page 15: ...ocuser which can be adjusted by the tensioning screw In general use the lightest amount of tension that will work with the installed components for smooth action But as heavier eyepieces are used espe...

Page 16: ...enerally brighter than deep sky objects Of course experimentation is always the most rewarding approach to determining eyepiece selection Observation Tips Your telescope will perform best when local a...

Page 17: ...n trying to use your scope too early in the night or trying to focus on objects close to the horizon as this will impair your ability to view clearly Generally you want to set your telescope up on the...

Page 18: ...ar chart will help you determine which constellation your target object is near Find the brightest star in that constellation and place it in the center of your eyepiece Again refer back to your star...

Page 19: ...in the middle of the small donut ring in the middle of the primary mirror If it is not adjust the tilt of the secondary mirror using the three small screws on the top of the secondary mirror assembly...

Page 20: ...a dust cloth or sponge for fingerprints dust etc Clean other components ONLY when absolutely necessary and then ONLY with a mild soap solution and lint free cloth by gently blotting Do not use any har...

Page 21: ...ance technical difficulties or other customer service requests please contact us at Info Opticsmart com 888 702 7102 TOPIC Page Acclimation 14 Alignment Finderscope 12 Balance 10 Base Assembly 4 Base...

Page 22: ...2015 Rev 3 15...

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