Sky-Watcher - Classic 250P 10" Dobsonian Telescope - S11620
- The 250mm aperture and an f/4.7 focal ratio make the Sky-Watcher Classic 250P 10" Dobsonian telescope great for observing both planetary and deep sky objects.
- 56% brighter than the Classic 200P Dobsonian.
- RAQ Coatings provide up to 94% reflectivity, making sure objects appear as bright as possible.
- Manual slewing with Teflon bearings for smooth movement.
- Patented tension control to point and lock the Sky-Watcher Classic 250P to its desired target.
- Supports both 1.25" and 2" accessories.
- 2" Crayford style focuser
- Comes with 25mm and 10mm 1.25" eyepieces, a 1.25" adapter, a 2" eyepiece adapter, dust caps, and a 9x50 finderscope.
Sky-Watcher Classic 250P 10" Dobsonian Telescope
One of the most noticeable and significant benefits of Dobsonian telescopes such as the Sky-Watcher Classic 250P is the aperture and light gathering power for the lower cost when compared to other telescope types of the same aperture. This makes them a great choice for beginner astronomers who at the minimum want a good solid aperture while keeping the budget on the lower side.
For the Sky-Watcher Classic 250P 10" Dobsonian Telescope, in addition to have a 10" aperture at a reasonable cost, the parabolic primary mirror is composed of borosilicate glass and then coated with Radiant Aluminum Quartz (RAQ) coatings to improve reflectivity up to 94%. These two factors combined results in a light gathering power of 1235x brighter than the human eye! More than sufficient for an excellent observing session of planetary objects to fainter and low surface brightness objects such as deep sky.
Sky-Watcher has installed Teflon bearings for the user to manually slew smoothly as well as a patented tension control handle to lock the telescope to wherever the desired target is. It can also support both 1.25" and 2" accessories making almost any eyepiece compatible.
Included items consist of two 1.25" eyepieces, a 1.25" adapter, a 2" eyepiece adapter, dust caps and a 9x50 finderscope.
Features
- The 250mm aperture and an f/4.7 focal ratio make the Sky-Watcher Classic 250P 10" Dobsonian telescope great for observing both planetary and deep sky objects.
- 56% brighter than the Classic 200P Dobsonian.
- RAQ Coatings provide up to 94% reflectivity, making sure objects appear as bright as possible.
- Manual slewing with Teflon bearings for smooth movement.
- Patented tension control to point and lock the Sky-Watcher Classic 250P to its desired target.
- Supports both 1.25" and 2" accessories.
- 2" Crayford style focuser
- Comes with 25mm and 10mm 1.25" eyepieces, a 1.25" adapter, a 2" eyepiece adapter, dust caps, and a 9x50 finderscope.
UPC | 050234116206 |
---|---|
Brand | Sky-Watcher USA |
Free Shipping | Free Shipping Available |
Aperture | 254 |
Case Included | No |
Focal Length | 1200mm |
Focal Ratio | f/4.7 |
Focus Type | 2" Crayford |
Focal Length of Eyepiece 1 | 25mm |
Magnification of Eyepiece 1 | 48x |
Focal Length of Eyepiece 2 | 10mm |
Magnification of Eyepiece 2 | 120x |
Finderscope Included | 9x50 Finder |
Diagonal Included | None |
Optical Tube Material | Aluminum |
Highest Useful Magnification | 500 |
Lowest Useful Magnification | 36 |
Limiting Stellar Magnitude | 14.5 |
Resolution - Rayleigh | 0.55 |
Resolution - Dawes | 0.46 |
Secondary Mirror Obstruction By Diameter | 25% |
Secondary Mirror Obstruction By Area | 6% |
Optical Coatings | Aluminum |
Optical Tube Length | 45" |
Optical Tube Diameter | 11.375" |
Optical Tube Weight | 28 Ibs |
Accessory Tray Included? | No |
Adjustable Legs? | No |
GPS | No |
Includes Autoguide Port | No |
Periodic Error Correction | No |
Total System Weight | 53 pounds |
Warranty | 2 year |
In The Box |
|
- Sky-Watcher Classic 250P 10" Dobsonian Telescope
- 25mm and 10mm 1.25" eyepieces
- 1.25" adapter
- 2" eyepiece adapter
- Dust caps
- 9x50 finderscope