Ken Fiscus Stargazing since 1980 Now observing from a green zone. Z12 on custom mount, Atomic EQ platform, 100% flocked, OMI primary, Astrocrumb filter slide with O-III, NPB, Skyglow filters. Focuser & spider rotated 45 degrees, new springs & Bob's Knobs, Telrad & 9x50 straight finder 35 & 24 Pans, TV 13,7,5 T6s Custom Orion XT10 with piggyback XT4.5 Round Table EQ Platform
Quote:Expect to be absolutely gobsmacked when you get a dark and steady night. I moved up from a 10" and was blown away by the textures of galaxies and nebula like the Swan, Veil, and Cocoon. Others have posted that the jump from 10 to 12 is moderate- I wholeheartedly disagree. IT IS AWESOME. If you go up from an 8 to a 12, you will have a very hard time ever going back down. You'll become a photon addict.You can find the Zhumell Mega-Mod thread saved on the Reflectors Forum. You would be joining a community of people who really are attached to the DIY mindset and the bargain-basement access to good, big mirrors. Lots of the posters have included pictures (me included) of their work and offer helpful tips. I hope you'll join us.
You know you are there when you start thinking in terms of EXIT PUPIL rather than Magnification..
Christopher AstroSky 16 inch dob 12.5 inch build for my dad. http://s1232.photobucket.com/u...%20inch%20truss%20II
DIY Astro Chair http://s1232.photobucket.com/u.../diy%20astro%20chair
Los Bichos atacan
Quote:Thanks Clay. I am hoping to get a more specific sense of what kind of increased detail I'll be able to see. In other words, when looking at some of the galaxies, will I see structure? Dust lanes? I know I've read that you need a 16" to start seeing the filaments of the Crab Nebula... In other words, will I look through the 12" and just see slightly brighter objects but no greater detail? My expectation is that the 4" increase will result in at least some increase in the visibility of structure of these objects.
ROR Observatory Levenhuk 8" carbon fiber RC, Astro Physics CCDT67 Astro-Tech AT8IN w/Moonlite, Baader Mark III MPCC Levenhuk 80mm triplet, Astro Tech 0.8X reducer/flattener Celestron CGEM DX w/HyperTune STF-8300M SX 7 position 36mm CFW Astrodon 5nm H-alpha Little Piney Observatory
Quote:Very interesting, but what happened to 5? Do you like your 12" Lightbridge? I'm wanting at least a 16" and I'm thinking about getting one. The OP might also want to consider a 12" LB
Quote:Quote:Thanks Clay. I am hoping to get a more specific sense of what kind of increased detail I'll be able to see. In other words, when looking at some of the galaxies, will I see structure? Dust lanes? I know I've read that you need a 16" to start seeing the filaments of the Crab Nebula... In other words, will I look through the 12" and just see slightly brighter objects but no greater detail? My expectation is that the 4" increase will result in at least some increase in the visibility of structure of these objects. I have both an 8" and 12" inch dob, and these are some of the specific differences I see between the two (from a dark sky site):1) 12" - The spiral arm on the outer edge of the dust lane of the Andromeda Galaxy is faint in the 12". 8" - Invisible.2) 12" - The spiral arms of the Whirlpool Galaxy appear with even the slightest averted vision; brighter portions of the arms stand out in moments of good seeing. 8" - The spiral arms are two vague hazes that circle the brighter center.3) 12" - The brighter arm of the Triangulum Galaxy appears as a lumpy haze that stretches out to NGC 604, the bright star forming region at the end of the arm. NGC 604 itself appears slightly lumpy. 8" - A few of the brightest star forming regions of the spiral arm can be seen with averted vison. NGC 604 is visible, but as a fuzzy blob.4) 12" - The companion galaxies of NGC 7331 are visible with averted vision. 8" - Forget about it.6) 12" - The galaxies in Stephan's Quintet can be partly separated in moments of good seeing. 8" - What Stephan's Quintet?.These are just a few examples of the differences I see, although your results may vary. A 12" will definitely take you into a new range of seeing, just as a 16" will take you into an even higher range. If I didnt' have to drive to a dark sky site, I would have a 16" scope, but as it is, portability is my first concern.
Quote:Dennyhenke: The difference will blow your socks off.
8 f7.62 eq. 12 f5 Dob
Barly my 10 yr old faithful Bichon pup.
Quote: I doubt I'll ever bother using the scope's included finder... Does anyone actually use those?
Quote:Got some great views in during my 6+ hours at the scope!!
Tim Z10 dob, flocked Orion ST-80 Meade Telestar 60mm (where I started) ...and a bunch of eyepieces and stuff. "When I consider your heavens, the work of your fingers, the moon and the stars, which you have set in place, what is man that you are mindful of him, the son of man that you care for him?" --Psalm 8:3-4
Quote:I like using my right angle finder in conjunction with a telrad. After a while it gets easy and quick. I find it helps me locate hard to find objects. 3 step process... locate most recognizable area or star with the telrad (closest you can get it.) then use right angle finder to get very close. Then use a finder eyepiece and confirm but remember everything is upside down and reversed. Happens quickly with practice.
ALL my posts should be considered as opinions shaped by MY experiences and understanding of the facts.