กล้องดูดาวแบบสะท้อน GSO 6" F5 บนเมาท์ iOptron CEM26 mount + AccuAlign + ขาตั้ง 1.5" tripod
The GSO 6" F5 reflector houses a big 150mm parabolic mirror with 80% more light grasp than a 4.5" mirror, for brighter, more detailed views of night sky curiosities. Of course, deep sky observations are also pleasing. The f/5 focal ratio also makes it convenient to photograph brighter deep sky objects such as galaxies, nebulas and star clusters.
The very high contrast leads to detail visibility near the physical limitations. Pinpoint stars over the entire field of view make observing galaxies and nebulae an aesthetic delight. GSO guarantees a difraction limited optic.
The 2" Crayford Focuser Most instruments of this size only have a 1.25" focusers. This is OK for visual use, but limits photographical capability. The GSO Newtonian has a 2" Crayford focuser and sufficient back focus to be able to reach focus with DSLR cameras. With the supplied 2" extension tube you will also reach focus with regular eyepieces providing the best of both worlds. The extension tube, and both the 2” eyepiece holder and the 1.25” adapter use non-marring soft brass compression rings to hold eyepieces in place, rather than simple thumbscrews that can scratch your eyepiece barrels.
Parabolic MirrorWith a 6” (153mm) diameter, 750mm focal length, f/5 focal ratio. Parabolic mirror. The mirror is made of B270 “water white” optical crown glass that is free of internal stress and striae. B270 glass is equivalent to BK7 in performance and optical quality. The thermal stability of B270 glass is generally better than the soda lime float glass used for the mirrors of most reflectors in this reasonable price range. The mirror is ground and polished under computer control for guaranteed diffraction limited performance, coated with 94% reflectivity aluminum, and overcoated with a protective layer of silicon dioxide (quartz) for long life.
Ease of collimationThe GSO GS500 also allows you to calibrate your mirrors to obtain the highest quality images that the telescope mirror is capable of. Use a philips (cross-head) screw driver to keep both primary and secondary mirrors in alignment. Such screws makes it easy to get the best out of your GSO GS500 telescope which has great reputation for its best-in-class mirrors.
For the primary mirror, a fully adjustable 3-point flotation system metal cell holds the primary mirror. The open frame of the cell allows the mirror to cool down to ambient temperatures quickly, so you can start observing sooner. Large hand-tighten color-coded push-pull collimation and collimation lock knobs make it easy to collimate the primary mirror with no tools required.
Finderscope and bracket: 6 x 30mm straight through fully-multicoated dark crosshair achromatic design. The finder has a long and comfortable 13mm eye relief. It focuses by loosening the trim ring behind the objective lens cell, screwing the lens cell in or out to focus, and tightening the trim ring to lock in the correct focus. The finderscope mounts in a quick release bracket that slips into a pre-installed metal mounting shoe beside the focuser. The bracket is held in place in the mounting shoe by a single large hand-tighten chrome-plated knob that maintains the finder’s collimation, even if the finder is removed between observing sessions.. The bracket has two hand-adjust collimation screws that work in conjunction with a third spring-loaded post in the bracket. This makes collimation faster than the traditional three- or six-screw collimation methods used with conventional finder brackets.
Introducing iOptron’s new compact next-generation center-balance equatorial mounts the CEM26! |
| Best for viewing | Brighter deep sky |
| Best for imaging | Lunar & planetary |
| User level | Beginner/Imtermediate |
| Optical design | Reflector |
| Optical diameter | 153mm (6") |
| Focal length | 750mm |
| Focal ratio | f/5 |
| Optics type | Parabolic |
| Eyepieces | 9mm (1.25") and 25mm (1.25") eyepieces |
| Magnification with included eyepieces | 30x and 83x |
| Resolving power | 0.77arc*sec |
| Highest useful magnification | 300x |
| Highest theoretical magnification | 300x |
| Limiting stellar magnitude | 13.6 |
| Optical quality | Diffraction limited, 1/12 wave |
| Finder scope | 6x30 fully multicoated achromatic |
| Focuser | 2" Precision Crayford |
| Secondary mirror obstruction | 52mm |
| Secondary mirror obstruction by diameter | 34% |
| Secondary mirror obstruction by area | 12% |
| Mirror coatings/over-coatings | Aluminum & Silicon Dioxide (Quartz) |
| Tube material | Steel |
| Length of optical tube | 27 in. (690mm) |
| Weight, optical tube | 13 lbs. (5.9kg) |
CEM26 MOUNT SPECIFICATIONS
| Mount | Center-Balanced Equatorial Mount |
| Payload * | 26 lbs (12kg), exclude counterweight |
| Mount weight | 10 lbs (4.5kg) |
| Payload/Mount weight | 2.6 |
| Structure Material | All metal, Casting + CNC machined |
| Exterior Finish | Powder coating |
| Periodic error (PE) ** | <±10 arcsec |
| PEC | Yes, Permanent PEC |
| Worm period | 600 sec |
| Right Ascension worm wheel | Φ88mm, 144 teeth aluminum |
| Declination worm wheel | Φ88mm, 144 teeth aluminum |
| Right Ascension axis shaft | Φ35mm steel |
| Declination axis shaft | Φ35mm steel |
| Right Ascension bearing | Φ55mm ball bearing |
| Declination bearing | Φ55mm ball bearing |
| Worm gears | Φ15.2mm, Brass |
| Motor drive | 1.8º stepper motor, 128X microdivision |
| Resolution | 0.17 arc seconds |
| Transmission | Synchronous belt |
| Latitude adjustment range | 0º ~ 60º |
| Azimuth adjustment range | ± 6º |
| Polar Scope | AccuAlignTM optical polar scope or iPolar (depends on option) |
| Level indicator | Level bubble |
| Hand Controller | Go2Nova® 8409 with ~212,000 objects database |
| Tracking | Automatic |
| Slew speed | 1×,2×,8×,16×,64×,128×,256×,512×,MAX(6º/sec) |
| Power consumption | 0.5A(Tracking), 0.8A(GOTO) |
| Power requiremention | 12V DC, 5A |
| AC adapter | 100V ~ 240V (included) |
| Power-down memory | Yes |
| Wi-Fi | Built-in |
| Communication port | Yes (Wi-Fi and USB) |
| Autoguide port | Yes (ST-4 compatible) |
| Firmware upgrade | Yes |
| PC computer control | Yes (ASCOM) |
| Counterweight shaft | Φ20X306mm (M16), Stainless Steel |
| Counterweight | 10 lbs (4.5kg) |
| Tripod | 1.5" (5kg) or LiteRoc 1.75" (7.5kg) heavy duty stainless steel |
| Dovetail saddle | 3.8" Vixen-style, center adjustable |
| GPS | Optional external 32-channel GPS |
| Autoguiding | Optional external iGuider 1 |
| Operation temperature | -10ºC ~ 40ºC |
| Warranty | Two year limited |
* OTA size and length dependent
** Measured with encoder, 10 minutes
Manual:
Quick Start Guide
Instruction Manual
Firmware:
Download Latest Firmware
iOptron Telescope ASCOM Driver:
Install ASCOM Driver and Commander













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