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Mark S W

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Everything posted by Mark S W

  1. I use Sky Atlas 2000.0 at the scope. I removed the spiral binding and only take the ones I need for that session. I do occasionally use Uranometria 2000 depending on how deep I am going. Mark
  2. This is a late post but I hope it is still of use. Prairie Astronomy Club Filter Performance Comparisons For Some Common Nebulae Filter Performance Comparisons For Some Common Nebulae | Prairie Astronomy Club By Dave Knisely Mark Clear skies
  3. This can be a challenge. A planetary nebulae GJJC1 in M22 "Planetary Nebula In Globular Cluster M22 (archive.org) Extraordinary Efforts And Results! Observation Report (web link) of GJJC1 by Stephen Waldee; near San Jose, California, August 15, 2007 (note: extensive report plus a sketch! - scroll down the linked page and you'll see report labeled "PN GJJC1 in M22") THANK YOU STEPHEN!" This report is by Stephen Waldee
  4. This might be of help. http://www.messier.seds.org/Messier.html http://www.messier.seds.org/xtra/12months/12months.html I am not sure if this is what Fraunhoffer was referring too. Mark
  5. Stephan. Looks like you had a good night of observing. Read with interest the report on IC 4593 and NGC 6210. I am a fan of PNe.
  6. I use the Farpoint 650nm laser collimator. Easy to use and accurate
  7. You might try this https://www.cloudynights.com/topic/517963-baader-45mm-morpheus/ I do not have one and I did not read the review. Sorry not more help
  8. SkyWatcher 305mm/1500mm(12") Focal length Magnification Focal Extender AFOV Field Stop TFOV Exit pupil 1500 2 Clestron Omni Plossl 32 47 94 44 52 1.99 6.53 Meade 25 60 120 50 0 0.00 5.10 Orion Expanse 20 75 150 66 23.5 0.90 4.08 Explore Scientific 16 94 188 68 18.2 0.70 3.27 Orion Expanse 9 167 333 66 15 0.58 1.84 Orion Expanse 6 250 500 66 8 0.31 1.22 This is what I currently observe with. I would like to replace the Clestron and the Meade. And fill the gap between the 16 and 6
  9. Thank you for the input. It was suggested the ES 52º would be a good choice simply because the power is not overwhelming . Once again Thanks
  10. What mid range eyepiece has a narrow field and high contrast that is good for Galaxies and Planetary nebula? My scope is a 305mm (12") with a focal length of 1500mm and focal ratio 4.9. Thinking 5 to 10 mm. Thank you
  11. My 12" just the right https://stargazerslounge.com/profile/27194-mark-s-w/ size for me
  12. Thank You so much for the post. I am getting ready to start the Astronomical League Planetary Nebulae Program so I will refer to this often. Mark
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