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