INSTRUCTION MANUALIN 361 Rev. A 9/09Customer Support (800) 676-1343 • E-mail: [email protected] Offices (831) 763-7000 • 89 Hangar Way, W
2Congratulations on your purchase of an Orion Ritchey-Chrétien astrograph! Astroimaging demands high contrast and center to edge image sharpne
3to thread directly onto the optical tube. It may be useful to experiment with different combinations during the day before heading out into the field
4T-ring 2” cameraadapter2” cameraadapterStarShoot CCDImagerFocuser2” extensionFocuser 1” extension2” extension 1” extensionFocuser(w/ 1.25” adapter)Di
5extension (1 x 1" and 1 x 2"). Larger 2" eyepieces may only require two inches of extension.Focusing the TelescopeOne of the exciti
62. Slide the chrome portion of the eyepiece into the star diagonal.3. Tighten the setscrew on the star diagonal to hold the eyepiece in place.To r
7Optical Axis AdjustmentThese adjustments will require a 3mm and 2.5mm hex key. There are three sets of “push-pull” screws on the back-end of the opti
8Care and Cleaning of the OpticsDo not disassemble the Ritchey-Chrétien for any reason, including to clean the mirror. A small amount of dust a
9One-Year Limited WarrantyThe Orion Ritchey-Chrétien Astrographs are warranted against defects in materials or workmanship for a period of one year fr
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