Meade Advanced Coma Free Optics (ACF) Optical Design
The science behind the Meade f/8 optical tube starts with their patented ACF optics. Improving upon the original Schmidt Cassegrain design, Meade's ACF optics deliver the ultimate in clarity, contrast and flat field of view. Natural coma and optical abberations are eliminated allowing for pin point round stars to the edge of the field. These qualities make Meade ACF optical tubes excellent imaging instruments. However, by pairing this revolution in optical design with their Ultra High Transmission Coatings (UHTC), light transmission and detail are greatly increased allowing you visually discern fainter objects than ever before - an observer's dream! This OTA is built for speed too. Traditional Schmidt Cassegrains would typically have a field stop of f/10, at only f/8 your exposure times are exponentially decreased allowing you to get more imaging in each night.
- ACF (Advanced Coma Free) Optics for maximum sharpness and clarity.
- UHTC (Ultra High Transmission Coatings) for 20% more contrast and brightness when compared to Meade's original optical coatings.
- 7:1 precision focuser with zero-image shift.
- Losmandy style dovetail for fast and easy attachment to your choice of mount.
- Includes Vixen style, top mounted accesssory dovetail to readily accept a wide variety of accessories including guide scopes and cameras.
- 8x50 optical finder
- Series 5000 2" diagonal
- 25mm HD-60 Eyepiece
- Additional Information
SKU ME-1008-80-00 Manufacturer Meade Telescope Series Meade Optical Tubes Optical Design Corrected Schmidt-Cassegrain Mount Type None - Optical Tube Only Warranty 1 Year Warranty Telescope Aperture 10" Telescope Focal Ratio f/8 Telescope Focal Length 2032mm Limiting Stellar Magnitude Info Not Provided By Manufacturer Highest Useful Magnification Info Not Provided By Manufacturer Optical Coatings Meade UHTC Dew Shield Included? No, Sold Separately Diagonal Included? Yes - 2" Star Diagonal Eyepiece(s) Included 25mm HD-60 Optical Tube Weight 33 lbs. Total Telescope Weight N/A Length of Optical Tube Info Not Provided By Manufacturer Optical Tube Outer Diameter Info Not Provided By Manufacturer Tube Color or Finish Meade Crackle Blue Matte OTA Mount Type Losmandy-Style Dovetail Finder Included 8 x 50 Optical Finder CD ROMs Included None Controller Type None Objects in Database N/A Mount Weight N/A Tripod Type Included None, Sold Separately Counterweights Included N/A Power Adapter Included None - Does Not Require Power
- Included Items
- Meade 10" f/8 ACF Optical Tube
- HD-60 25mm Eyepiece
- Series 5000 2" Diagonal
- D Series Dovetail Mounting Plate
- 8x50 Cross Hair Reticle Finder w/ Bracket
- Dust Covers
- Questions & Answers
Product QuestionsHi: Can you change the position of the dovetail bar? I would want to move it 90 degrees from position shown in the picture to accommodate my mount. Thanks,Question by: timestop on May 26, 2014 12:04:51 PMThe dovetail bar can be mounted only on the top or bottom of the optical tube, but the finder can be mounted in two positions to that it is possible to rotate the whole tube by 90 degrees with the dovetail on the bottom and still have the finderscope in a convenient position.Answer by: Chris (Admin) on May 27, 2014 8:20:08 AMWhich version of the Flexible Dew shields would work on the 10" F8 ACF OTA given the position of the dovetail plate and its mounting bracket. Also, how would you rig a heating cable given the dovetail location. Thanks for your answerQuestion by: timestop on Nov 2, 2014 8:19:23 AMThere is approximately 1.25" from the front radius saddle to the front lip of the 10" OTA, so a standard 10" SCT dew shield or heater strip should have enough purchase to hold onto the end of the scope. for a non-heated dew shield, you can cut a wide notch in the shield to fit around the lower radius saddle if you want, but it should not be necessary.Answer by: Chris (Admin) on Nov 6, 2014 10:25:22 AMHi: Is the visual back a true 2" visual back, so that there will be no vignetting when using a 2" diagonal and 2" eyepieces? Other than a mount, eyepieces, dew shield and dew heater, is there anything one would need to start using this? Thanks!Question by: StarNut on Jul 3, 2014 7:12:12 AMThe clear aperture of the 2" visual back is 1.66", but the scope has the standard ~3.27" visual back behind it that will accept aftermarket true 2" adapters from Peterson Engineering and other companies. The difference between 1.66" and 2" will be minimal, as the real ID of a 2" diagonal barrel is around 1.85", so even with a 40-50mm+ eyepiece the difference will be slight.
For visual use, the accessories you mention are a great start. I would add a recommendation of moon filter and light pollution filter and good power supply for whatever mount you choose.Answer by: Chris (Admin) on Jul 3, 2014 11:22:58 AMWould the vignetting on a full frame camera such as a Canon 6D still allows for good pictures? How about with APS-C?Question by: Ogen on Jun 11, 2015 8:55:00 AMFrom personal experience, this optical tube will work well on a full frame DSLR (I used a 5D Mk II) with just a slight bit of distortion of star shapes in the corners. The baffle tube has a minimum opening of ~2.5" at the baffles, so there is no mechanical vignetting, but you will still need to shoot flat frames to correct natural light fall-off in the corners. An APS-C sensor will have more even illumination and great star shapes across the frame, but flats are still recommended for best results.Answer by: Chris Hendren (Admin) on Jun 11, 2015 12:11:00 PMHi: Can the included finder scope be set-up with a right angle diagonal to improve ease of use? Thanks!Question by: timestop on May 10, 2014 3:00:12 AMThere is no way to modify the included finderscope with a right angle attachment as that would require cutting the finder tube shorter to allow for the path length of the diagonal. Right angle finderscopes from Orion, Antares and other companies OPT works with can be purchased separately to replace the included straight through finder in the included bracket or with optional replacement finder brackets.Answer by: Chris (Admin) on May 11, 2014 7:07:40 AMIs it possible to assemble the new OTA 10" to an old field tripod and mount from year 1990, to install it to the go to system and make it work?
Who can do this installation?Question by: Fernando soler on Sep 15, 2015 7:43:00 PMUnfortunately, it does not appear so. We spoke to Meade and they said that the current oprical tubes would not have the same hole pattern on each side to mount to an older fork mount. The optical tube doe not include any of the computerization, so the mount would need to be upgraded to a newer model with GoTo and at least a 40 lb carrying capacity to support this telescope.Answer by: Chris Hendren on Sep 17, 2015 4:31:00 PMHi Chris: Thanks for the answer on moving the dovetail. Follow-up: I see in the picture 1. the finder scope and 2. another mounting bracket. Can this mounting bracket be moved also?Question by: timestop on May 27, 2014 1:07:52 PM
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