The Sky-Watcher EXPLORER-250PDS Newtonian Reflector incorporates the same superb mirror-set as the Explorer-250P Black Diamond Series, but with two significant advantages. A Dual-Speed 10:1 ratio focuser is now included for excellent focusing precision. Also the tube length has been slightly shortened to optimise performance for prime-focus photography. Even better performance for astro-photography and visual use can be achieved when used in combination with Sky-Watcher’s Newtonian coma corrector (SKY-20233).
Delivery:
- 250mm Newton Telescope
- 2" 1:10-focuser with 1¼" adapter
- 28mm eyepiece 2" LET
- 9x50 finder
Products specifications
|
Type of telescope
|
Newton |
|
Focuser
|
2" Crayford focuser with micro focusing 1:10 |
|
Aperture
|
254 mm |
|
Focal length
|
1200 mm |
|
Connection to eyepiece
|
2" |
|
Tube weight
|
29.7 lb with Tuberings |
|
Secondary mirror support
|
0.5 mm ultra thin mirror supports |
|
Eyepieces
|
2" 28mm LET |
|
Focal ratio
|
f/4.7 |
|
Max. useful visual power
|
508 x |
|
Viewfinder
|
9 x 50 |
