Starfield 6" f/4 Imaging Newtonian Telescope - SF-N6-01

The Starfield 6" Imaging Newtonian has a fast f/4 focal ratio for wide field astrophotography. A cooling fan helps your scope acclimate to the outside temperature so you can start imaging as soon as possible, and a 2" dual speed linear focuser will handle the weight of a DSLR or dedicated APS-C astronomy camera.  At only 13 pounds, you can mount this OTA on a medium-sized equatorial mount via the included Vixen-style dovetail plate.  

Optical Performance  

The 6" primary mirror is made of BK7 optical glass, which is known for its thermal stability.  The primary mirror is not only dielectrically coated, but also has a protective layer of SiO2 (quartz) for durability.

The optics are mounted in a cell with six easy-to-use collimation knobs for easy optical alignment.   The exact center of the mirror is marked to make using a laser collimator simple.  The primary mirror cell includes a low noise, long-lifetime cooling fan powered by 8 AA batteries (batteries not included).

An APS-S DSLR camera or dedicated camera such as the ZWO ASI2600MC-Pro will achieve close to a 2 degree field of view diagonally.  Large objects like Andromeda and the Orion Nebula will fit nicely in the field of view.  

Features  

The 2" monorail focuser, with its 10:1 dual speed focusing mechanism, comes standard with the Starfield 6" Imaging Newtonian.  This heavy-duty focuser provides enough lifting power for a DSLR or CMOS deep sky camera.   A motor can be added for automated control.

This scope comes with split tube rings lined with felt to protect the finish.  A Vixen-style dovetail with adjustment screws also comes standard, as does an  8x50mm finder scope and extension tube for visual use.    

It is easy to add your own accessories or another dovetail to the top of the OTA with the provided M6 screw holes located on the top of the rings.  The inside of the OTA has a matte black interior finish to reduce stray reflection and increase image contrast.  The overall length of the OTA extends past the focuser, which also helps prevent reflections and the resulting lower contrast.  

Optical design: Newtonian reflector 

Aperture: 150mm (6") 

Focal ratio: f/4 

Focal length: 600mm 

Focuser: 2" Linear bearing 2 speed crayford style focuser with 10:1 gear reduction

Primary mirror: 150mm Primary Mirror 92% reflectivity dielectrically coated/minimum 1/12th wave, BaK7 glass

Secondary mirror holder: 4-vane all metal spider 

Tube outside diameter: End rings = 9.5" 

Tube length = 21.75" 

Tube weight (with included accessories): 13 lb.

Shipped size / weight = 26"x13"x10" / 17 lb.