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  1. Orion vs. Celestron
  2. 4 choices for a beginner
  3. Celestron Powerseeker 114 eq help!!!
  4. What exactly those rectangular shadows in defused star test.
  5. Check Quality of Optics
  6. 12" apertura base compatible with zhumell?
  7. What am I seeing?
  8. Bushnell GoTo
  9. Cleaned the primary mirror, can't gain focus.
  10. CCD camera instead (in place) of secondary mirror
  11. Orbitor 9000 6" reflector
  12. Orion Optics UK Europa 150mm F6
  13. Where to find affordable mirrors?
  14. Maybe I want one of these?
  15. Skywatcher Explorer-200PDS for visual
  16. Mirror Removal on Coulter Odyssey
  17. I Stole a Telescope, Need Help!!!!
  18. Things that made collimation difficult...
  19. Replacing the focuser tube on a reflector
  20. First views of cresent moon with new scope..
  21. Artec 200
  22. Newtonian on a CGEM II Mount
  23. What is the purpose of luxury-class Dobsonians with ~12"- 16" apertures?
  24. Case for a C8N
  25. Wavefront error and actual impact on viewing in a reflector
  26. Tasco 3T - 76mm F/9.2 Newtonian from 1985
  27. Skywatcher 200mm f5 imaging reflector ( black diamond series )
  28. Dumpster Scope
  29. Collimating too much???
  30. Best telescope for terrestrial observing with Panasonic GH5?
  31. Help! Mirror Fog!
  32. Tasco galaxsee 45
  33. How to know which reflectors will reach focus for AP
  34. Favorite up grade to your dob?
  35. Is there a Newtonian design that eliminates star spikes and other distortions?
  36. How Clean Does the Primary Mirror Need to Be - Really?
  37. Mirror re-coating
  38. Need instructions
  39. Helios Skyhawk 114-2
  40. Tasco 11TR
  41. Officina Stellare RH-200
  42. Perfect case for your 4" (~100mm) refractor
  43. Setting up a Celestron 52268 C90 for afocal Digiscope
  44. astrophotography with celstron astromaster 114 eq
  45. Bausch and lomb criterion 8000 manual needed
  46. Celestron 6 inch classic reflector
  47. re-coating mirrors at the South Africa Astronomical Observatory
  48. Why not silvered mirrors?
  49. f4 Quatro
  50. Newbie looking for Telescope
  51. Ineterested in questions about manual entry level reflectors for a paper.
  52. Looking for instruction manual PDF for an Apertura AD12
  53. Collimating a bird-jones without a primary centre spot
  54. Celestron Astro Fi WiFi telescopes?
  55. Newtonian rotation rings, basic
  56. RC 8" Collimation lessons learned, quesstions
  57. Collimation Cap or cheshire?
  58. esperience with Starblast 6i?
  59. storage? LX70 equatorial mount
  60. Help new astronomer
  61. Moving....Crash! Boom! Bang! My scope!
  62. Bresser N-150L on a CG4 mount
  63. Care and handling of a truss style dob.
  64. Collimation shout out to Philip
  65. Newtonian for Astrophotography
  66. Non-typical Secondary mirror on 20" RC?
  67. Bresser Newtonian OTA
  68. Alignment
  69. XT12 primary mirror quality
  70. Photography with Newtonians Question
  71. Should I referb this scope more?
  72. Wisdom of 10" F/3.9 for Visual with Some AP and limit travel, Eyepiece Focal lengths
  73. collimation question
  74. Obsession primary moving and solution
  75. Mirror cleaning, not so bad
  76. Can't collimate
  77. Rehabing an old handmade telescope
  78. Orion starseeker IV goto 150mm telescope
  79. Suggestions for Travel Scope
  80. Is it time to clean?
  81. Orion xt10 vs xt10i
  82. cooling fan mod for Orion 8" newt
  83. flocking this flocker...
  84. Sky Watcher Collapsible Dobsonians ???
  85. Installing a Moonlight CR2
  86. Thread size for secondary mirror adjusting screws ???
  87. Aperture 10" pros & cons
  88. eVscope (Enhanced Vision scope)
  89. Vixen VMC 110L magnification problems
  90. Focal reducer for a Mak-Newt?
  91. Apertura Dobsonian 10" supplied EPs
  92. Zhumell, Orion, Apertura?
  93. Difference Dirty mirror vs Clean mirror in visual observations
  94. Hubble Optics
  95. Has anyone used the Explore Scientific 8 inch carbon fiber Newt?
  96. New Telescope Has Arrived!
  97. Orion Skyquest xt 6 Classic Dobsonian wants to come home
  98. Telescope Parts
  99. Homemade 1969 Newtonian First Light
  100. Solar Tracking Question
  101. Re: Meade 114EQ-DH Drive Motor
  102. Orion SkyQuest Part Needed
  103. New to Astronomy - Telescope recommendation
  104. EZ push to
  105. Spacek (not Sissy) Telescope
  106. M Ritchey-Chretien advice
  107. At8
  108. A few Coma Corrector examples..
  109. Drawtube alignment with optical path.
  110. Orion f/4.9 OTA collimation
  111. Colimation by numbers
  112. A 24" scope, and the Cloud Gods take a holiday!!!
  113. Laser collimators
  114. Looking For New Mirrors
  115. Orion XT8 Plus on Orion Atlas Pro EQ/AZ-G.
  116. my Bushnell 769648 is blurry
  117. AWB Onesky 130 at the beach
  118. Freebie Scope --- What do I have???
  119. I got a new scope!!!
  120. Ritchey-Chretien ...
  121. First light with new Mag1 Instruments Portaball 12.5"
  122. Modification: Adding a Telrad beside the RACI on an XT10i
  123. New SLT short tube ?
  124. Edmund Astroscan
  125. Diagonal cleaning
  126. 100% illuminated spot in the FOV
  127. GSO RC collimation
  128. secondary mirror size for newtonian reflector telescopes
  129. First lighting of a Z10, a mini-review
  130. Great deal on a reflector and Goto AZ mount!
  131. Collimating during session
  132. Astromaster 114 - blurry
  133. Considering 11 year old XT6, thoughts/concerns?
  134. Focuser axial alignment in Newtonian Reflectors
  135. Anyone using AT 10" f/4 carbon fiber truss-tube imaging Newtonian?
  136. Twisted spider vein
  137. First light on the Orion 8" Astrograph.
  138. Orion 6" F/4 Newtonian Astrograph First Impression
  139. Criterion RV6 Makeover
  140. Farpointastro collimation aid issue
  141. Zhumell Z100 100mm f/4
  142. secondary enhanced mirror coatings question
  143. Rainbow/prism effect.
  144. The Jones-Bird telescope design - the IS and ISN't
  145. 15 inch primary mirror has a scratch
  146. Yet another collimation aid
  147. travelling with 15 inch primary mirror
  148. Maksutov Newtonian or Just Regular Newtonian?
  149. Request for Image
  150. Thoughts on a new imaging reflector
  151. Aligning Secondary on Celestron 127EQ w/ or w/o Correction Lens?
  152. Water spots on the primary - 10" newt, Should I clean it?
  153. Weird zooming on Celestron PowerSeeker 127eq?
  154. Welcome to my nightmare.
  155. Suggestions for high-quality Dobsonian optics?
  156. Question about "Lowest Useful Magnification" & focal reducers
  157. ES 2" coma corrector any good?
  158. Cruelty to telescopes
  159. All You Want to Know about Bird-Jones Telescopes and More
  160. Yes I did sneak one in there. Grab and go or not?
  161. Collimation problems
  162. K-Way telescope (for RSA members)
  163. Celestron knows how to throw a curve
  164. Is this worth the money
  165. Pulled the trigger on a Celestron AstroMaster 130EQ MD
  166. Trading with a friend - Is this an equal trade?
  167. What have I done?
  168. Orion SpaceProbe 130ST
  169. upgrading to my second scope recommendations
  170. 130mm f/5 reflector vs. 102mm f/6.5 Achromat Refractor
  171. Now what is wrong with this picture?
  172. Glatter Tools
  173. Question about Mak-Newt Astrographs
  174. Finally My Dream OTA comes true
  175. Finally bought new scope and mount.
  176. Laser, barlowed laser, collimation cap, and cheshire collimator: my experience
  177. Close View Secondary Adjustment (CVSA)
  178. Collimation Issue...any suggestions?
  179. Up, up and away above....
  180. It's only half as bad as you think it is....
  181. Quick Mirror Clean?
  182. Newb question: 2x or 3x barlow?
  183. Now's your chance so hurry!
  184. Newb question re: Celestron 127EQ
  185. Not a grab-n-go: 22-inch solid tube on GEM
  186. 12" f5 Newtonian
  187. What do we accomplish when we collimate a primary mirror?
  188. 10" Newtonian vs 8" R-C
  189. A poorer man's coma corrector
  190. Why do we not see longer focal ratios especially on smaller appateur scopes?
  191. NStiesi's C8N rebuild thread
  192. DO I still need Star charts?
  193. What if I have been wrong all this time?
  194. And just to round things off....
  195. 8 inch Reflector on an Equatorial mount for $425 new (link to Amazon)?
  196. The secondary mirror...nothing more than a driver's side rear view mirror
  197. Dented diffraction ring patterns in star test.
  198. first impression review of tpo f6 6" imaging newt
  199. Best "budget" scope?
  200. Eyepieces and mount for Omni 150/750.
  201. a sheepish re-request
  202. Opinions on focuser upgrade sought
  203. Identification
  204. damage advice request
  205. out of focus stars..
  206. Decisions...Which is 'best'...Recommendations?
  207. best 6" F/5 reflector?
  208. Cleaning a spec off secondary mirror?
  209. Orion 203mm f4.9 and Baadar mpcc question and observation
  210. Collimation issue or something else?
  211. Pulled the Trigger - Clouds for a Month
  212. Just finished servicing my 5" reflector
  213. Meade R8 F/5 first impression
  214. colimention problem or?
  215. swapping out OTA
  216. Meade DS 2130
  217. AstroZap Reflector?
  218. Celestron 6" Newtonian
  219. Laser collimator collimation
  220. A little embarrassed
  221. GEO77 telescope
  222. Another couple questions about my 8" dob
  223. Schmidt vs Newt, Planetary
  224. Legit store site
  225. Bird - Jones Collimation Note
  226. Tips for m31
  227. Meade TeleStar / DS-2130AT
  228. Question about my 8" dob
  229. Need Suggestions for remounting primary mirror
  230. Celestron 127EQ or Celestron 130EQ
  231. New 8" Orion Astrograph
  232. Dew Prevention Idea
  233. Can optics be to fast
  234. are focal reducers compatible with newtonian reflectors?
  235. Central Obstruction Effects in Telescope Resolution.
  236. Hi! I am new to this forum.
  237. First and Second Lights - Meade Polaris 130
  238. New guy...what am I in for?
  239. Meade 114EQ-DH Drive Motor
  240. Considering upgrading from 6 to 8 inches.
  241. EFA kit for Planewave CDK 12.5
  242. Frequent collimation required on new scope
  243. Safe to look at tonights eclipse through a 10 inch scope?
  244. First light with Orion GX250
  245. Do you have to be at a dark site to see nebulae and clusters?
  246. Orion GX 250
  247. 250mm Quattro vs NEQ6Pro Astrophoto
  248. Visionary Mira Ceti
  249. TPO 8" F4 imaging newtonian
  250. Can Bob's Knobs be better...?