Quote:Are you saying that your 10 inch mirror housing will hold a 12?
Meade 10" f/4.7 Starfinder Dob(Modified)
Orion SkyQuest XX14g f/4.6
Orion 25x100 and Zhumell 25x100 binocs, both on full motion parallelogram mounts by Charles Funk
Orion 10x50 binocs
Tele Vue Paracorr Type 1
Howie Glatter Parallizer, Laser, and TuBlug
ES 30mm 82* 2" ES 14mm 100* 2" ES 11, 6.7mm 82* 1 1/4"
Orion Stratus 3.5,8,& 17mm 68* 1 1/4"
Orion Plantary 5mm
Orion DeepView 35mm and 42mm 2"
Meade 8/24mm Zoom
Binoviewers w/ 15 and 20mm eyepieces
Orion XT12g 12" f/4.92 GoTo Dob Orion 9x50 RACI - Green Laser Pointer Orion 4.5" f/4 EP: ES82 30mm, ES68 24mm EP: Hyperion 21, 17, 13, 10, 8, 5mm Various filters, including Skyglow, UHC, O-III Celestron Ultima 2x Barlow Celestron 12x80 binoculars & mount
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 on Round Table EQ Platform
"I have been paddling in the shallows of a great ocean of knowledge." - Sir Isaac Newton * * 15" F4.55 Starsplitter Dob & a Denk II binoviewer * * http://peaceofsky.wordpress.com/ Pacheco State Park Fremont Peak
Johnny FS152 15" Obsession Classic w/ 14.5" f/4.65 Zambuto
Shane in black-zone New Mexico'Fracs, Maks, Newts and Schmidt-Newts, 3.1"-10", f/4-f/13. Alt-az and GEMs.
Quote:I would sooner observe with a 10" with great optics than a 12" with good optics. Be careful what you are comparing - 10" vs. 12" alone means nothing.
14" Strut; 10"XT; 102ES; 22 in Process; 3.5,5,7,10,14,20mm Pentax XW; 17.3 & 12mm Delos; 27mm Panoptic; 20&24mm ES 68; 24mm ES 82; 30mm ES 82; 6&10mm BCO;
Quote:A ten inch grab and go? Really?
My eyepieces are made from the waste product of exploding stars.
10XTi 102XLT ST80A(2" Focuser); President, Eypieces Anonymous, Denver Chapter (Hello, I'm an eyepiece junky, what's your excuse?)
DAS Dark Site
-DannyMy warehouseMy Channel
Astronomy educator/Sidewalk astronomer
Owner of Astronomy Delight franchise
18 inch f4.42 Dob on eq platform w ST120 f/5 finder
12 inch Zhumell Dob
8 inch f/6.9 home made Dob with Seevers optics
William Optics red 10th Anniversary 80mm FD
C8 XLT on Vixen GPDX
26lb eyepiece box
Cernan Space Center astronomer
Member of Northwest Suburban Astronomers
Quote:10" to 12"? Only if upgrading from an inexpensive Chinese dob to a custom-built American made high-end dob...
Tele Vue Pronto, Teeter STS27 w/10" Royce conical mirror. EPs: Pentax, Russell Optics, WO, TV
17.5" f4.1 Manual Discovery Split Tube Dobsonian (Love 100 AFOV and wide TFOVs).
Denk II Dual Power Switch 3x3=9 powers x3 OCS = 27 power options per eyepiece pair.
2.3x40 to 25x100 Binos (and many in between).
Quote:Quote:10" to 12"? Only if upgrading from an inexpensive Chinese dob to a custom-built American made high-end dob...Yes, what Starman1 said is sage advice.I had a chance to compare my Apertura AD8 to a Teeter/Zambuto 8" side by side, and difference was easily noticeable. The contrast of Teeter blew away the views in my GSO 8".I recently sold the AD8, which I loved, and ordered a Teeter/Royce 10" F/5. I decided 10" is my limit due to portability - it will still fit into my Honda Fit and be easy to move around. In fact, the new Teeter will weigh substantially less than my AD8.Even though 8 - to 10" isn't a huge jump, I anticipate the premium Royce conical mirror to show markedly better contrast, and, given conditions, to be able to accept higher magnification as well. Mmmm...festoons.
Home-built Newt: 10" f/4.5 Royce conical primary, Skywatcher NEQ6 (Astrotroniks tuned) iEQ45, Duo-T, 8" f/4 Skywatcher Quattro CF 120 ED f/7.5 Skywatcher Black Diamond 80ED Stellarvue
Quote:Quote:...I recently sold the AD8, which I loved, and ordered a Teeter/Royce 10" F/5...Even though 8 - to 10" isn't a huge jump, I anticipate the premium Royce conical mirror to show markedly better contrast, and, given conditions, to be able to accept higher magnification as well. Mmmm...festoons. You'll be very pleased with the Royce 10" f/5.I replaced a Skywatcher 10" f/4.7 with a Royce 10" f/4.5, and I am continually astounded at the improvement in what I can see in the deep sky
Quote:...I recently sold the AD8, which I loved, and ordered a Teeter/Royce 10" F/5...Even though 8 - to 10" isn't a huge jump, I anticipate the premium Royce conical mirror to show markedly better contrast, and, given conditions, to be able to accept higher magnification as well. Mmmm...festoons.
Quote:I agree with the consensus here. I love my 10", and after looking through quite a range of others' scopes at star parties, I wouldn't upgrade to anything less than 15". Somewhere around 15" is where galaxies start to show detail instead of blobs.I think there's a sweet spot around 15" - 16" if you can handle the portability issues. 12", not so much; you are adding far more weight than light-gathering or resolving power in going from 10" to 12".
Quote: Again, I remember some advice that Peter Smitka gave me almost 20 years ago. If you want a noticeable bump up, double the light gathering of your optics. You would go from an 8 to a 12 to an 18 and so on. Something in that order is what I would recommend. Yes to going up a few inches IF you are going to move up in optical quality.
Quote: If one is in search of a WOW, then the step up is probably not going to be satisfactory.
Quote: Yes to going up a few inches IF you are going to move up in optical quality.
Quote:Great choice. It's amazing how many seasoned observers have settled on a 12" class dob for their main scope, due to its portability and ability to cool down quickly. Larger dobs can end up chasing thermals all night long. 12" is great. If you can find a thin premium mirror then all the better.
Quote:I have 10" tuned dob using for binoviewing, so is worth to upgrade it with 12"" mirror?
Will be difference noticable, and how much?
I am not interest for 14" or larger mirrors because of weight, size....
Quote: When I compared the 10 to my friend's 12.5 under those same dark skies, the difference was no more than "edge of seeing"; in other words, negligible.