SKYWATCHER QUATTRO 200 f/4
Sky-Watcher
Newtonian
9.5 kg
SKYWATCHER QUATTRO 200 f/4 is backordered and will ship as soon as it is back in stock.
The SkyWatcher 200 Quattro is a Newtonian telescope with the super fast focal ratio of f/4. If compared with a f/5 telescope, the photographic exposure with a f/4 system is 40% shorter, making it a great time saver. This instrument is ideal for astrophotography and it will deliver sharp images across a large flat field when used with the SkyWatcher aplanatic coma corrector.
The 2" Crayford focuser is solid, precise and backlash free. It operates at two speeds due to the 10:1 reduction mechanism for an extra fine focusing adjustment, which is paramount for astrophotography and high resolution observations.
The secondary mirror is oversized in order to have a fully illuminated field and to avoid any vignetting. It is collimable by using 3 grub screws and the offset can be adjusted by using the central spring loaded screw.
The primary mirror sits on a 9 points cell and is collimatable with 3 pairs of push & pull screws.
Both mirrors are made in borosilicate glass which have low thermal expansion coefficient. That means that the precise optical surfaces of the mirrors remain the same while the glass will cool down.
The aluminium tube is internally blackened to avoid internal reflection, enhance contrast and to absorb stray light.
Specifications
Optical design |
Newtonian reflector |
Objective diameter |
205 mm |
Focal length |
800 mm |
Focal ratio |
f/3.9 |
Secondary mirror |
70 mm (minor axis) |
Linear obstruction |
35 % |
Resolving power |
0.60 arc second |
Stellar limiting magnitude |
14.0 |
Max. magnification |
400 x |
Light gathering power |
816 times the human eye |
Mount attachment |
Tube rings on Vixen style bar |
Focuser |
Crayford dual speed (10:1) |
Tube weight |
9.5 kg |
Tube length |
730 mm |
Tube diameter |
235 mm |
SKU |
SWP2008-OTA |
In the box
- Newtonian Quattro 200 f/4
- Tube rings on Vixen style bar
- 8x50 finderscope
- 2" tube extension for 2" eyepieces
- 2" to M42 and 2" to 1.25" adapter
- Piggyback 1/4" screw with camera locking nut
- Eyepiece not included
Gallery
M16 by Stefano Salvi | Quattro 200 f/4, QHY268M, Antlia 3nm Pro SHO filters.