Orion 6/6I Appendix a Collimating the Optics, Collimation Cap, Primary Mirror Center Mark

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drawtube

Reflection of primary mirror clip

Reflective surface

Primary mirror

of collimation

center mark

cap

 

b.c.

a.

 

 

 

d.

 

e.

 

 

 

 

Figure 27. Collimating the optics. (a) When the mirrors are properly aligned, the view down the focuser drawtube should look like this. (b) With the collimation cap in place, if the optics are out of alignment, the view might look something like this.

(c)Here, the secondary mirror is centered under the focuser, but it needs to be adjusted (tilted) so that the entire primary mirror is visible. (d) The secondary mirror is correctly aligned, but the primary mirror still needs adjustment. When the primary mirror is correctly aligned, the center “dot” of the collimation cap will be centered, as in (e).

Appendix A: Collimating the Optics

Collimating is the process of adjusting the mirrors so they are aligned with one another. Your telescope’s optics were aligned at the factory, and should not need much adjustment unless the telescope was handled roughly in transit. Accurate mirror align- ment is important to ensure the peak performance of your tele- scope, so it should be checked regularly. Collimating is a rela- tively easy process and can be done in daylight or darkness.

To check collimation, remove the eyepiece and look down the focuser drawtube. You should see the secondary mirror cen- tered in the drawtube, as well as the reflection of the primary mirror centered in the secondary mirror, and the reflection of the secondary mirror (and your eye) centered in the reflection of the primary mirror, as in Figure 27a. If anything is off-center, proceed with the following collimating procedure.

The Collimation Cap

Your StarBlast 6/6i comes with a “quick collimation cap” (Figure 28). This is a simple cap that fits on the focuser drawtube like a dust cap, but has a tiny hole in the center and a reflective inner surface. The collimation cap helps center your eye over the focuser drawtube so that aligning the optical components is easier to achieve. The reflective surface provides a distinct visual reference that is helpful in centering the mirror reflec- tions. Figures 27b through 27e assume that you have the col- limation cap in place.

Figure 28. The quick collimation cap, which features an inner reflective surface, helps in centering reflections of the optics in the focuser during the collimation process.

The Primary Mirror Center Mark

You’ll notice that the primary mirror of the StarBlast 6/6i has a tiny ring (sticker) marking its center. This “center mark” allows you to achieve a very precise collimation; you don’t have to guess where the exact center of the mirror is.

NOTE: The center ring sticker need not ever be removed from the primary mirror. Because it lies directly in the shadow of the secondary mirror, its presence in no way adversely affects the optical performance of the telescope or the image quality. That might seem counterintuitive, but it’s true!

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Contents Orion StarBlast 6/6i IntelliScope Reflector #9926 / #27126Page Table of Contents Unpacking Parts ListJam nut for vertical stop bolt Azimuth encoder disk Assembly of #9926 Assembly of #27126 StarBlast 6i IntelliScopeUnder side of top baseplate Pre-drilled starter hole BaseplateHead of azimuth axis bolt and fender washer Tape Compression spring Into the jack on the right side of the encoder connector Base where you want the clip to be locatedOn the telescope mounting bracket shaft with the flat Side of the ring facing outward the opposite side hasFinal Assembly of Your Telescope StarBlast 6/6i Install the EZ Finder II Reflex SightInstall the Eyepiece Rack Attach the Optical Tube to the BasePreparing to Use Your Telescope Replacing the EZ Finder II Battery Observing With Your TelescopeAligning the EZ Finder Choosing an Observing SiteEyepiece Selection Tracking Celestial ObjectsWhat to Expect Moon SunPlanets StarsUsing the IntelliScope Computerized Object Locator Powering the ControllerSetting the Vertical Stop AlignmentSimple Two-Star Alignment Jam nut Vertical stop L-bracketOverview of the IntelliScope Computerized Object Locator Alignment Error Warp FactorPushbuttons Guide Arrows Locating the PlanetsMessier Catalog Locating Deep-Sky Objects by CatalogNew General Catalog Locating Nebulas Index CatalogLocating Star Clusters Locating Galaxies Locating StarsNamed Stars Double and Multiple StarsUsing the ID Button Catalog ST StarsTours of the Best Objects Starting a TourFunction FCN Button Adding User-Defined ObjectsDec. Coordinates Realignment Function Hidden FunctionsAltitude and Azimuth Test Encoder TestDownload Checksum Rewrite Care and MaintenanceClock Specifications of the IntelliScope System Specifications of the StarBlast 6/6iObjects in database Collimation Cap Appendix a Collimating the OpticsPrimary Mirror Center Mark Preparing the Telescope for Collimating Adjusting the Secondary Mirror’s Rotational PositionAligning the Secondary Mirror Star-Testing the Telescope Adjusting the Secondary Mirror’s TiltAligning the Primary Mirror Appendix B Cleaning the Optics Appendix C Troubleshooting IntelliScope SystemWarp factor consistently above ±0.5 but below ±2.0 Warp numbers larger thanPage Spic Appendix D Alignment Star Finder ChartsDaylight saving time Late June Early JulyLate July Early AugustEarly September 200 AM Late September 100 AM Early October EgaLate October Late December Early JanuaryLate January Early FebruaryCanes Venatici Appendix E Constellation AbbreviationsPiscis Austrinus Appendix F ST Catalog ∑80 ∑79 ∑88 ∑90 Zeta Eta ∑113 PsiUV p Nu Phi ∑162 ∑174 ∑163 Baten Kaitos ∑178 ∑180 RumkerOmicron 3506Theta EpsilonZaurak Lambda 75871 Alpha26 03 12916 Zeta∑552 ∑559 ∑572 54 R ∑590 Iota Pi4 Pi5Hinds Crimson Star ∑627 ∑644 ∑655 RhoRigel 476 H3750Delta 119 ∑718 Alnilam Phi2 Zeta Sigma Phact Alnitak GammaZeta Mirzam Mu Alpha Eta ADS Furud Beta32.3 +07 +20.2 +37Nu1 Sirius ∑948 ∑958∑80 ∑1037Procyon O∑179 ∑1138 ∑1127 ∑1149 Zeta c BetaAC 31 Beta 3948 ADS HN19 H269 Alpha Kappa Zeta RumkerH4903 ∑1224 ∑1223 ∑1282 ∑1298 Rho ∑1311H4188 h4191 ∑1321 ∑1334 ∑1338 Alpha Kappa ∑1347 Kappa 24 Phi∑1355 Zeta ∑1351 AlterfTania Australis Mu Alpha 45 Delta Alpha Omega Lambda ADS∑1466 ∑1633ADS ADS 8119 Nu ADS 8148 83 84 Lambda Beta H4486 +04 +68.8Epsilon M40 ∑1639 Alpha Delta Gamma ADS+05.3 +21 57.2 +03.4 +38.3 +66.0Mizar Spica ∑∑123 ∑1755 Rigil Kentaurus Pi ∑186413 29.7 ADS 8934 13 32.3 13 20.3Zeta Alpha q Alpha C1 Izar Dunlop H4715∑1932 Mu ∑1931 H4753 Iota DeltaDelta Sigma Rho Epsilon Iota ∑2052 RmkDelta Sigma 121 H4853Zeta Atria Shaula Rasalhague IotaAlpha Eta 75, Rho 75’ 40’ 35’∑2241 Kappa Psi40-41 100Alpha ∑359 ∑358 Vega ∑2375 ∑2379 Beta ∑2404 ∑2420 Delta2 ∑525 Nunki 13 ∑2417H5082 ∑2449 ∑2474Delta Epsilon ∑2583 Zeta Chi Altair Eta 57 O∑532 Psi +49 +15.1+32.6 +50 +45 +35 +10.6 +33 +18.5 +70 +11.8 +19 +08 29.2BF h1470 X WZ ∑2675 ∑2637 ∑2644 RT Alpha Alpha ∑2671Omicron ∑2716 S763∑2742 12 Xi ∑2758Delta Theta Beta ∑2816 V460 SS RV Epsilon Lambda ∑2840 ∑2841∑2873 Eta ∑2863 O∑461 Alpha ∑2894 PiH5334 +82+03 +37 Phi Psi3 Dunlop249 Errai Theta 107 ∑3042 Lal192 Sigma ∑3050Star Double star challenge Page One-Year Limited Warranty

6/6I specifications

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